Package: zenoh
Version: 1.0.0~beta.4-1
Architecture: amd64
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 40
Depends: zenoh-plugin-storage-manager (=1.0.0~beta.4-1), zenohd (=1.0.0~beta.4-1), zenoh-plugin-rest (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh_1.0.0~beta.4-1_amd64.deb
Size: 17344
MD5sum: daba84bc355dc20ce02e215b9c33ca1a
SHA1: 76313ff2362fe15bcb2b11a217b19457451572e1
SHA256: c479e7041feccfeb71d394659ad28f8219ddb9201453d397c32a2d5dd749571e
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: Zenoh: The Zero Overhead Pub/Sub/Query Protocol.
.
[](https://github.com/eclipse-zenoh/zenoh/actions?query=workflow%3A%22CI%22)
[](https://zenoh-rust.readthedocs.io/en/latest/?badge=latest)
[](https://github.com/eclipse-zenoh/roadmap/discussions)
[](https://discord.gg/2GJ958VuHs)
[](https://choosealicense.com/licenses/epl-2.0/)
[](https://opensource.org/licenses/Apache-2.0)
.
# Eclipse Zenoh
.
The Eclipse Zenoh: Zero Overhead Pub/sub, Store/Query and Compute.
.
Zenoh (pronounce _/zeno/_) unifies data in motion, data at rest and
computations. It carefully blends traditional pub/sub with geo-distributed
storages, queries and computations, while retaining a level of time and space
efficiency that is well beyond any of the mainstream stacks.
.
Check the website [zenoh.io](http://zenoh.io) and the
[roadmap](https://github.com/eclipse-zenoh/roadmap) for more detailed
information.
.
-------------------------------
.
## Getting Started
.
Zenoh is extremely easy to learn, the best place to master the fundamentals is
our [getting started guide](https://zenoh.io/docs/getting-started/first-app/).
.
-------------------------------
.
## How to install it
.
To install the latest release of the Zenoh router (`zenohd`) and its default
plugins (REST API plugin and Storages Manager plugin) you can do as follows:
.
### Manual installation (all platforms)
.
All release packages can be downloaded from
[https://download.eclipse.org/zenoh/zenoh/latest/](https://download.eclipse.org/zenoh/zenoh/latest/).
.
Each subdirectory has the name of the Rust target. See the platforms each
target corresponds to on
[https://doc.rust-lang.org/stable/rustc/platform-support.html](https://doc.rust-lang.org/stable/rustc/platform-support.html).
.
Choose your platform and download the `.zip` file.
Unzip it where you want, and run the extracted `zenohd` binary.
.
### Linux Debian
.
Add Eclipse Zenoh private repository to the sources list, and install the
`zenoh` package:
.
```bash
echo "deb [trusted=yes] https://download.eclipse.org/zenoh/debian-repo/ /" |
sudo tee -a /etc/apt/sources.list.d/zenoh.list > /dev/null
sudo apt update
sudo apt install zenoh
```
.
Then you can start run `zenohd`.
.
### MacOS
.
Tap our brew package repository and install the `zenoh` formula:
.
```bash
brew tap eclipse-zenoh/homebrew-zenoh
brew install zenoh
```
.
Then you can start run `zenohd`.
.
-------------------------------
.
## Rust API
.
* [Docs.rs for Zenoh](https://docs.rs/zenoh/latest/zenoh/)
.
-------------------------------
.
## How to build it
.
> [!WARNING]
> Zenoh and its ecosystem are under active development. When you build from
git, make sure you also build from git any other Zenoh repository you plan to
use (e.g. binding, plugin, backend, etc.). It may happen that some changes in
git are not compatible with the most recent packaged Zenoh release (e.g. deb,
docker, pip). We put particular effort in maintaining compatibility between the
various git repositories in the Zenoh project.
.
Install [Cargo and
Rust](https://doc.rust-lang.org/cargo/getting-started/installation.html). Zenoh
can be successfully compiled with Rust stable (>= 1.75.0), so no special
configuration is required from your side. If you already have the Rust
toolchain installed, make sure it is up-to-date with:
.
```bash
rustup update
```
.
To build Zenoh, just type the following command after having followed the
previous instructions:
.
```bash
cargo build --release --all-targets
```
.
Zenoh's router is built as `target/release/zenohd`. All the examples are built
into the `target/release/examples` directory. They can all work in
peer-to-peer, or interconnected via the zenoh router.
.
-------------------------------
.
## Quick tests of your build
.
### Peer-to-peer tests
.
* **pub/sub**
* run: `./target/release/examples/z_sub`
* in another shell run: `./target/release/examples/z_put`
* the subscriber should receive the publication.
.
* **get/queryable**
* run: `./target/release/examples/z_queryable`
* in another shell run: `./target/release/examples/z_get`
* the queryable should display the log in its listener, and the get should
receive the queryable result.
.
### Routed tests
.
> [!NOTE]
> **Windows users**: to properly execute the commands below in PowerShell you
need to escape `"` characters as `\"`.
.
* **put/store/get**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell run: `./target/release/examples/z_put`
* then run `./target/release/examples/z_get`
* the get should receive the stored publication.
.
* **REST API using `curl` tool**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, do a publication via the REST API:
`curl -X PUT -d '"Hello World!"' http://localhost:8000/demo/example/test`
* get it back via the REST API:
`curl http://localhost:8000/demo/example/test`
.
* **router admin space via the REST API**
* run the Zenoh router with permission to perform config changes via the
admin space, and with a memory storage:
`./target/release/zenohd --adminspace-permissions=rw
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, get info of the zenoh router via the zenoh admin space:
`curl http://localhost:8000/@/local/router`
* get the volumes of the router (only memory by default):
`curl 'http://localhost:8000/@/local/router/**/volumes/*'`
* get the storages of the local router (the memory storage configured at
startup on '/demo/example/**' should be present):
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
* add another memory storage on `/demo/mystore/**`:
`curl -X PUT -H 'content-type:application/json' -d
'{"key_expr":"demo/mystore/**","volume":"memory"}'
http://localhost:8000/@/local/router/config/plugins/storage_manager/storages/mystore`
* check it has been created:
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
.
### Configuration options
.
A Zenoh configuration file can be provided via CLI to all Zenoh examples and
the Zenoh router.
.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file and
the available options.
.
See other examples of Zenoh usage in [examples/](examples)
.
> [!NOTE]
> **Zenoh Runtime Configuration**: Starting from version 0.11.0-rc, Zenoh
allows for configuring the number of worker threads and other advanced options
of the runtime. For guidance on utilizing it, please refer to the
[doc](https://docs.rs/zenoh-runtime/latest/zenoh_runtime/enum.ZRuntime.html).
.
-------------------------------
.
## Zenoh router command line arguments
.
`zenohd` accepts the following arguments:
.
* `--adminspace-permissions <[r|w|rw|none]>`: Configure the read and/or write
permissions on the admin space. Default is read only.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file. All
properties of this configuration are optional, so you may not need such a large
configuration for your use-case.
* `--cfg :`: allows you to change specific parts of the
configuration right after it has been constructed. VALUE must be a valid JSON5
value, and key must be a path through the configuration file, where each
element is separated by a `/`. When inserting in parts of the config that are
arrays, you may use indexes, or may use `+` to indicate that you want to append
your value to the array. `--cfg` passed values will always override any
previously existing value for their key in the configuration.
* `-l, --listen ...`: An endpoint on which this router will listen
for incoming sessions.
Repeat this option to open several listeners. By default, `tcp/[::]:7447` is
used. The following endpoints are currently supported:
* TCP: `tcp/:`
* UDP: `udp/:`
* [TCP+TLS](https://zenoh.io/docs/manual/tls/): `tls/:`
* [QUIC](https://zenoh.io/docs/manual/quic/): `quic/:`
* `-e, --connect ...`: An endpoint this router will try to connect
to. Repeat this option to connect to several peers or routers.
* `--no-multicast-scouting`: By default zenohd replies to multicast scouting
messages for being discovered by peers and clients.
This option disables this feature.
* `-i, --id `: The identifier (as an hexadecimal string - e.g.:
A0B23...) that zenohd must use.
**WARNING**: this identifier must be unique in the system! If not set, a
random unsigned 128bit integer will be used.
* `--no-timestamp`: By default zenohd adds a HLC-generated Timestamp to each
routed Data if there isn't already one.
This option disables this feature.
* `-P, --plugin [ | :]...`: A
[plugin](https://zenoh.io/docs/manual/plugins/) that must be loaded. Accepted
values:
* a plugin name; zenohd will search for a library named
`libzenoh_plugin_.so` on Unix, `libzenoh_plugin_.dylib` on
MacOS or `zenoh_plugin_.dll` on Windows.
* `":"`; the plugin will be loaded from library
file at ``.
.
Repeat this option to load several plugins.
* `--plugin-search-dir ...`: A directory where to search for
[plugins](https://zenoh.io/docs/manual/plugins/) libraries to load.
Repeat this option to specify several search directories'. By default, the
plugins libraries will be searched in:
`'/usr/local/lib:/usr/lib:~/.zenoh/lib:.'`
* `--rest-http-port `: Configures the [REST
plugin](https://zenoh.io/docs/manual/plugin-http/)'s HTTP port. Accepted
values:
* a port number
* a string with format `:` (to bind the HTTP server to
a specific interface)
* `"None"` to deactivate the REST plugin
.
If not specified, the REST plugin will be active on any interface (`[::]`)
and port `8000`.
.
-------------------------------
.
## Plugins
.
> [!WARNING]
> As Rust doesn't have a stable ABI, the plugins should be
built with the exact same Rust version than `zenohd`, and using for `zenoh`
dependency the same version (or commit number) than 'zenohd'.
Otherwise, incompatibilities in memory mapping of shared types between `zenohd`
and the library can lead to a `"SIGSEV"` crash.
.
By default the Zenoh router is delivered or built with 2 plugins. These may be
configured through a configuration file, or through individual changes to the
configuration via the `--cfg` CLI option or via zenoh puts on individual parts
of the configuration.
.
> [!WARNING]
> Since `v0.6`, `zenohd` no longer loads every available plugin at startup.
Instead, only configured plugins are loaded (after processing `--cfg` and
`--plugin` options). Once `zenohd` is running, plugins can be hot-loaded and,
if they support it, reconfigured at runtime by editing their configuration
through the adminspace.
.
Note that the REST plugin is added to the configuration by the default value of
the `--rest-http-port` CLI argument.
.
**[REST plugin](https://zenoh.io/docs/manual/plugin-http/)** (exposing a REST
API):
This plugin converts GET and PUT REST requests into Zenoh gets and puts
respectively.
.
**[Storages plugin](https://zenoh.io/docs/manual/plugin-storage-manager/)**
(managing [backends and
storages](https://zenoh.io/docs/manual/plugin-storage-manager/#backends-and-volumes))
This plugin allows you to easily define storages. These will store key-value
pairs they subscribed to, and send the most recent ones when queried. Check out
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) for info on how to configure them.
.
-------------------------------
.
## Troubleshooting
.
In case of troubles, please first check on [this
page](https://zenoh.io/docs/getting-started/troubleshooting/) if the trouble
and cause are already known.
Otherwise, you can ask a question on the [zenoh Discord
server](https://discord.gg/vSDSpqnbkm), or [create an
issue](https://github.com/eclipse-zenoh/zenoh/issues).
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh
Version: 1.0.0~beta.4-1
Architecture: armhf
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 40
Depends: zenoh-plugin-rest (=1.0.0~beta.4-1), zenohd (=1.0.0~beta.4-1), zenoh-plugin-storage-manager (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh_1.0.0~beta.4-1_armhf.deb
Size: 17344
MD5sum: de59f95e8e866e2aec5d0a43f0a4d98b
SHA1: ded3406cfe43238a95cde1630ebf7d924aa0903c
SHA256: 66d4a2148e038c442ebb04477ebdc0ffc7c26ff5d3e2051958e0cd4b7135fd2e
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: Zenoh: The Zero Overhead Pub/Sub/Query Protocol.
.
[](https://github.com/eclipse-zenoh/zenoh/actions?query=workflow%3A%22CI%22)
[](https://zenoh-rust.readthedocs.io/en/latest/?badge=latest)
[](https://github.com/eclipse-zenoh/roadmap/discussions)
[](https://discord.gg/2GJ958VuHs)
[](https://choosealicense.com/licenses/epl-2.0/)
[](https://opensource.org/licenses/Apache-2.0)
.
# Eclipse Zenoh
.
The Eclipse Zenoh: Zero Overhead Pub/sub, Store/Query and Compute.
.
Zenoh (pronounce _/zeno/_) unifies data in motion, data at rest and
computations. It carefully blends traditional pub/sub with geo-distributed
storages, queries and computations, while retaining a level of time and space
efficiency that is well beyond any of the mainstream stacks.
.
Check the website [zenoh.io](http://zenoh.io) and the
[roadmap](https://github.com/eclipse-zenoh/roadmap) for more detailed
information.
.
-------------------------------
.
## Getting Started
.
Zenoh is extremely easy to learn, the best place to master the fundamentals is
our [getting started guide](https://zenoh.io/docs/getting-started/first-app/).
.
-------------------------------
.
## How to install it
.
To install the latest release of the Zenoh router (`zenohd`) and its default
plugins (REST API plugin and Storages Manager plugin) you can do as follows:
.
### Manual installation (all platforms)
.
All release packages can be downloaded from
[https://download.eclipse.org/zenoh/zenoh/latest/](https://download.eclipse.org/zenoh/zenoh/latest/).
.
Each subdirectory has the name of the Rust target. See the platforms each
target corresponds to on
[https://doc.rust-lang.org/stable/rustc/platform-support.html](https://doc.rust-lang.org/stable/rustc/platform-support.html).
.
Choose your platform and download the `.zip` file.
Unzip it where you want, and run the extracted `zenohd` binary.
.
### Linux Debian
.
Add Eclipse Zenoh private repository to the sources list, and install the
`zenoh` package:
.
```bash
echo "deb [trusted=yes] https://download.eclipse.org/zenoh/debian-repo/ /" |
sudo tee -a /etc/apt/sources.list.d/zenoh.list > /dev/null
sudo apt update
sudo apt install zenoh
```
.
Then you can start run `zenohd`.
.
### MacOS
.
Tap our brew package repository and install the `zenoh` formula:
.
```bash
brew tap eclipse-zenoh/homebrew-zenoh
brew install zenoh
```
.
Then you can start run `zenohd`.
.
-------------------------------
.
## Rust API
.
* [Docs.rs for Zenoh](https://docs.rs/zenoh/latest/zenoh/)
.
-------------------------------
.
## How to build it
.
> [!WARNING]
> Zenoh and its ecosystem are under active development. When you build from
git, make sure you also build from git any other Zenoh repository you plan to
use (e.g. binding, plugin, backend, etc.). It may happen that some changes in
git are not compatible with the most recent packaged Zenoh release (e.g. deb,
docker, pip). We put particular effort in maintaining compatibility between the
various git repositories in the Zenoh project.
.
Install [Cargo and
Rust](https://doc.rust-lang.org/cargo/getting-started/installation.html). Zenoh
can be successfully compiled with Rust stable (>= 1.75.0), so no special
configuration is required from your side. If you already have the Rust
toolchain installed, make sure it is up-to-date with:
.
```bash
rustup update
```
.
To build Zenoh, just type the following command after having followed the
previous instructions:
.
```bash
cargo build --release --all-targets
```
.
Zenoh's router is built as `target/release/zenohd`. All the examples are built
into the `target/release/examples` directory. They can all work in
peer-to-peer, or interconnected via the zenoh router.
.
-------------------------------
.
## Quick tests of your build
.
### Peer-to-peer tests
.
* **pub/sub**
* run: `./target/release/examples/z_sub`
* in another shell run: `./target/release/examples/z_put`
* the subscriber should receive the publication.
.
* **get/queryable**
* run: `./target/release/examples/z_queryable`
* in another shell run: `./target/release/examples/z_get`
* the queryable should display the log in its listener, and the get should
receive the queryable result.
.
### Routed tests
.
> [!NOTE]
> **Windows users**: to properly execute the commands below in PowerShell you
need to escape `"` characters as `\"`.
.
* **put/store/get**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell run: `./target/release/examples/z_put`
* then run `./target/release/examples/z_get`
* the get should receive the stored publication.
.
* **REST API using `curl` tool**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, do a publication via the REST API:
`curl -X PUT -d '"Hello World!"' http://localhost:8000/demo/example/test`
* get it back via the REST API:
`curl http://localhost:8000/demo/example/test`
.
* **router admin space via the REST API**
* run the Zenoh router with permission to perform config changes via the
admin space, and with a memory storage:
`./target/release/zenohd --adminspace-permissions=rw
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, get info of the zenoh router via the zenoh admin space:
`curl http://localhost:8000/@/local/router`
* get the volumes of the router (only memory by default):
`curl 'http://localhost:8000/@/local/router/**/volumes/*'`
* get the storages of the local router (the memory storage configured at
startup on '/demo/example/**' should be present):
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
* add another memory storage on `/demo/mystore/**`:
`curl -X PUT -H 'content-type:application/json' -d
'{"key_expr":"demo/mystore/**","volume":"memory"}'
http://localhost:8000/@/local/router/config/plugins/storage_manager/storages/mystore`
* check it has been created:
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
.
### Configuration options
.
A Zenoh configuration file can be provided via CLI to all Zenoh examples and
the Zenoh router.
.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file and
the available options.
.
See other examples of Zenoh usage in [examples/](examples)
.
> [!NOTE]
> **Zenoh Runtime Configuration**: Starting from version 0.11.0-rc, Zenoh
allows for configuring the number of worker threads and other advanced options
of the runtime. For guidance on utilizing it, please refer to the
[doc](https://docs.rs/zenoh-runtime/latest/zenoh_runtime/enum.ZRuntime.html).
.
-------------------------------
.
## Zenoh router command line arguments
.
`zenohd` accepts the following arguments:
.
* `--adminspace-permissions <[r|w|rw|none]>`: Configure the read and/or write
permissions on the admin space. Default is read only.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file. All
properties of this configuration are optional, so you may not need such a large
configuration for your use-case.
* `--cfg :`: allows you to change specific parts of the
configuration right after it has been constructed. VALUE must be a valid JSON5
value, and key must be a path through the configuration file, where each
element is separated by a `/`. When inserting in parts of the config that are
arrays, you may use indexes, or may use `+` to indicate that you want to append
your value to the array. `--cfg` passed values will always override any
previously existing value for their key in the configuration.
* `-l, --listen ...`: An endpoint on which this router will listen
for incoming sessions.
Repeat this option to open several listeners. By default, `tcp/[::]:7447` is
used. The following endpoints are currently supported:
* TCP: `tcp/:`
* UDP: `udp/:`
* [TCP+TLS](https://zenoh.io/docs/manual/tls/): `tls/:`
* [QUIC](https://zenoh.io/docs/manual/quic/): `quic/:`
* `-e, --connect ...`: An endpoint this router will try to connect
to. Repeat this option to connect to several peers or routers.
* `--no-multicast-scouting`: By default zenohd replies to multicast scouting
messages for being discovered by peers and clients.
This option disables this feature.
* `-i, --id `: The identifier (as an hexadecimal string - e.g.:
A0B23...) that zenohd must use.
**WARNING**: this identifier must be unique in the system! If not set, a
random unsigned 128bit integer will be used.
* `--no-timestamp`: By default zenohd adds a HLC-generated Timestamp to each
routed Data if there isn't already one.
This option disables this feature.
* `-P, --plugin [ | :]...`: A
[plugin](https://zenoh.io/docs/manual/plugins/) that must be loaded. Accepted
values:
* a plugin name; zenohd will search for a library named
`libzenoh_plugin_.so` on Unix, `libzenoh_plugin_.dylib` on
MacOS or `zenoh_plugin_.dll` on Windows.
* `":"`; the plugin will be loaded from library
file at ``.
.
Repeat this option to load several plugins.
* `--plugin-search-dir ...`: A directory where to search for
[plugins](https://zenoh.io/docs/manual/plugins/) libraries to load.
Repeat this option to specify several search directories'. By default, the
plugins libraries will be searched in:
`'/usr/local/lib:/usr/lib:~/.zenoh/lib:.'`
* `--rest-http-port `: Configures the [REST
plugin](https://zenoh.io/docs/manual/plugin-http/)'s HTTP port. Accepted
values:
* a port number
* a string with format `:` (to bind the HTTP server to
a specific interface)
* `"None"` to deactivate the REST plugin
.
If not specified, the REST plugin will be active on any interface (`[::]`)
and port `8000`.
.
-------------------------------
.
## Plugins
.
> [!WARNING]
> As Rust doesn't have a stable ABI, the plugins should be
built with the exact same Rust version than `zenohd`, and using for `zenoh`
dependency the same version (or commit number) than 'zenohd'.
Otherwise, incompatibilities in memory mapping of shared types between `zenohd`
and the library can lead to a `"SIGSEV"` crash.
.
By default the Zenoh router is delivered or built with 2 plugins. These may be
configured through a configuration file, or through individual changes to the
configuration via the `--cfg` CLI option or via zenoh puts on individual parts
of the configuration.
.
> [!WARNING]
> Since `v0.6`, `zenohd` no longer loads every available plugin at startup.
Instead, only configured plugins are loaded (after processing `--cfg` and
`--plugin` options). Once `zenohd` is running, plugins can be hot-loaded and,
if they support it, reconfigured at runtime by editing their configuration
through the adminspace.
.
Note that the REST plugin is added to the configuration by the default value of
the `--rest-http-port` CLI argument.
.
**[REST plugin](https://zenoh.io/docs/manual/plugin-http/)** (exposing a REST
API):
This plugin converts GET and PUT REST requests into Zenoh gets and puts
respectively.
.
**[Storages plugin](https://zenoh.io/docs/manual/plugin-storage-manager/)**
(managing [backends and
storages](https://zenoh.io/docs/manual/plugin-storage-manager/#backends-and-volumes))
This plugin allows you to easily define storages. These will store key-value
pairs they subscribed to, and send the most recent ones when queried. Check out
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) for info on how to configure them.
.
-------------------------------
.
## Troubleshooting
.
In case of troubles, please first check on [this
page](https://zenoh.io/docs/getting-started/troubleshooting/) if the trouble
and cause are already known.
Otherwise, you can ask a question on the [zenoh Discord
server](https://discord.gg/vSDSpqnbkm), or [create an
issue](https://github.com/eclipse-zenoh/zenoh/issues).
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh
Version: 1.0.0~beta.4-1
Architecture: armel
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 40
Depends: zenoh-plugin-storage-manager (=1.0.0~beta.4-1), zenohd (=1.0.0~beta.4-1), zenoh-plugin-rest (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh_1.0.0~beta.4-1_armel.deb
Size: 17344
MD5sum: a463bd2af1d460e68bde89b71d2cb930
SHA1: ac69e03b8f97a6296c9db1c3a3694ec5818b19af
SHA256: ba96574979ded85cdcba5abeee0e16b8f7841cd0e5de9e58a4907477f42796d2
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: Zenoh: The Zero Overhead Pub/Sub/Query Protocol.
.
[](https://github.com/eclipse-zenoh/zenoh/actions?query=workflow%3A%22CI%22)
[](https://zenoh-rust.readthedocs.io/en/latest/?badge=latest)
[](https://github.com/eclipse-zenoh/roadmap/discussions)
[](https://discord.gg/2GJ958VuHs)
[](https://choosealicense.com/licenses/epl-2.0/)
[](https://opensource.org/licenses/Apache-2.0)
.
# Eclipse Zenoh
.
The Eclipse Zenoh: Zero Overhead Pub/sub, Store/Query and Compute.
.
Zenoh (pronounce _/zeno/_) unifies data in motion, data at rest and
computations. It carefully blends traditional pub/sub with geo-distributed
storages, queries and computations, while retaining a level of time and space
efficiency that is well beyond any of the mainstream stacks.
.
Check the website [zenoh.io](http://zenoh.io) and the
[roadmap](https://github.com/eclipse-zenoh/roadmap) for more detailed
information.
.
-------------------------------
.
## Getting Started
.
Zenoh is extremely easy to learn, the best place to master the fundamentals is
our [getting started guide](https://zenoh.io/docs/getting-started/first-app/).
.
-------------------------------
.
## How to install it
.
To install the latest release of the Zenoh router (`zenohd`) and its default
plugins (REST API plugin and Storages Manager plugin) you can do as follows:
.
### Manual installation (all platforms)
.
All release packages can be downloaded from
[https://download.eclipse.org/zenoh/zenoh/latest/](https://download.eclipse.org/zenoh/zenoh/latest/).
.
Each subdirectory has the name of the Rust target. See the platforms each
target corresponds to on
[https://doc.rust-lang.org/stable/rustc/platform-support.html](https://doc.rust-lang.org/stable/rustc/platform-support.html).
.
Choose your platform and download the `.zip` file.
Unzip it where you want, and run the extracted `zenohd` binary.
.
### Linux Debian
.
Add Eclipse Zenoh private repository to the sources list, and install the
`zenoh` package:
.
```bash
echo "deb [trusted=yes] https://download.eclipse.org/zenoh/debian-repo/ /" |
sudo tee -a /etc/apt/sources.list.d/zenoh.list > /dev/null
sudo apt update
sudo apt install zenoh
```
.
Then you can start run `zenohd`.
.
### MacOS
.
Tap our brew package repository and install the `zenoh` formula:
.
```bash
brew tap eclipse-zenoh/homebrew-zenoh
brew install zenoh
```
.
Then you can start run `zenohd`.
.
-------------------------------
.
## Rust API
.
* [Docs.rs for Zenoh](https://docs.rs/zenoh/latest/zenoh/)
.
-------------------------------
.
## How to build it
.
> [!WARNING]
> Zenoh and its ecosystem are under active development. When you build from
git, make sure you also build from git any other Zenoh repository you plan to
use (e.g. binding, plugin, backend, etc.). It may happen that some changes in
git are not compatible with the most recent packaged Zenoh release (e.g. deb,
docker, pip). We put particular effort in maintaining compatibility between the
various git repositories in the Zenoh project.
.
Install [Cargo and
Rust](https://doc.rust-lang.org/cargo/getting-started/installation.html). Zenoh
can be successfully compiled with Rust stable (>= 1.75.0), so no special
configuration is required from your side. If you already have the Rust
toolchain installed, make sure it is up-to-date with:
.
```bash
rustup update
```
.
To build Zenoh, just type the following command after having followed the
previous instructions:
.
```bash
cargo build --release --all-targets
```
.
Zenoh's router is built as `target/release/zenohd`. All the examples are built
into the `target/release/examples` directory. They can all work in
peer-to-peer, or interconnected via the zenoh router.
.
-------------------------------
.
## Quick tests of your build
.
### Peer-to-peer tests
.
* **pub/sub**
* run: `./target/release/examples/z_sub`
* in another shell run: `./target/release/examples/z_put`
* the subscriber should receive the publication.
.
* **get/queryable**
* run: `./target/release/examples/z_queryable`
* in another shell run: `./target/release/examples/z_get`
* the queryable should display the log in its listener, and the get should
receive the queryable result.
.
### Routed tests
.
> [!NOTE]
> **Windows users**: to properly execute the commands below in PowerShell you
need to escape `"` characters as `\"`.
.
* **put/store/get**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell run: `./target/release/examples/z_put`
* then run `./target/release/examples/z_get`
* the get should receive the stored publication.
.
* **REST API using `curl` tool**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, do a publication via the REST API:
`curl -X PUT -d '"Hello World!"' http://localhost:8000/demo/example/test`
* get it back via the REST API:
`curl http://localhost:8000/demo/example/test`
.
* **router admin space via the REST API**
* run the Zenoh router with permission to perform config changes via the
admin space, and with a memory storage:
`./target/release/zenohd --adminspace-permissions=rw
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, get info of the zenoh router via the zenoh admin space:
`curl http://localhost:8000/@/local/router`
* get the volumes of the router (only memory by default):
`curl 'http://localhost:8000/@/local/router/**/volumes/*'`
* get the storages of the local router (the memory storage configured at
startup on '/demo/example/**' should be present):
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
* add another memory storage on `/demo/mystore/**`:
`curl -X PUT -H 'content-type:application/json' -d
'{"key_expr":"demo/mystore/**","volume":"memory"}'
http://localhost:8000/@/local/router/config/plugins/storage_manager/storages/mystore`
* check it has been created:
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
.
### Configuration options
.
A Zenoh configuration file can be provided via CLI to all Zenoh examples and
the Zenoh router.
.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file and
the available options.
.
See other examples of Zenoh usage in [examples/](examples)
.
> [!NOTE]
> **Zenoh Runtime Configuration**: Starting from version 0.11.0-rc, Zenoh
allows for configuring the number of worker threads and other advanced options
of the runtime. For guidance on utilizing it, please refer to the
[doc](https://docs.rs/zenoh-runtime/latest/zenoh_runtime/enum.ZRuntime.html).
.
-------------------------------
.
## Zenoh router command line arguments
.
`zenohd` accepts the following arguments:
.
* `--adminspace-permissions <[r|w|rw|none]>`: Configure the read and/or write
permissions on the admin space. Default is read only.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file. All
properties of this configuration are optional, so you may not need such a large
configuration for your use-case.
* `--cfg :`: allows you to change specific parts of the
configuration right after it has been constructed. VALUE must be a valid JSON5
value, and key must be a path through the configuration file, where each
element is separated by a `/`. When inserting in parts of the config that are
arrays, you may use indexes, or may use `+` to indicate that you want to append
your value to the array. `--cfg` passed values will always override any
previously existing value for their key in the configuration.
* `-l, --listen ...`: An endpoint on which this router will listen
for incoming sessions.
Repeat this option to open several listeners. By default, `tcp/[::]:7447` is
used. The following endpoints are currently supported:
* TCP: `tcp/:`
* UDP: `udp/:`
* [TCP+TLS](https://zenoh.io/docs/manual/tls/): `tls/:`
* [QUIC](https://zenoh.io/docs/manual/quic/): `quic/:`
* `-e, --connect ...`: An endpoint this router will try to connect
to. Repeat this option to connect to several peers or routers.
* `--no-multicast-scouting`: By default zenohd replies to multicast scouting
messages for being discovered by peers and clients.
This option disables this feature.
* `-i, --id `: The identifier (as an hexadecimal string - e.g.:
A0B23...) that zenohd must use.
**WARNING**: this identifier must be unique in the system! If not set, a
random unsigned 128bit integer will be used.
* `--no-timestamp`: By default zenohd adds a HLC-generated Timestamp to each
routed Data if there isn't already one.
This option disables this feature.
* `-P, --plugin [ | :]...`: A
[plugin](https://zenoh.io/docs/manual/plugins/) that must be loaded. Accepted
values:
* a plugin name; zenohd will search for a library named
`libzenoh_plugin_.so` on Unix, `libzenoh_plugin_.dylib` on
MacOS or `zenoh_plugin_.dll` on Windows.
* `":"`; the plugin will be loaded from library
file at ``.
.
Repeat this option to load several plugins.
* `--plugin-search-dir ...`: A directory where to search for
[plugins](https://zenoh.io/docs/manual/plugins/) libraries to load.
Repeat this option to specify several search directories'. By default, the
plugins libraries will be searched in:
`'/usr/local/lib:/usr/lib:~/.zenoh/lib:.'`
* `--rest-http-port `: Configures the [REST
plugin](https://zenoh.io/docs/manual/plugin-http/)'s HTTP port. Accepted
values:
* a port number
* a string with format `:` (to bind the HTTP server to
a specific interface)
* `"None"` to deactivate the REST plugin
.
If not specified, the REST plugin will be active on any interface (`[::]`)
and port `8000`.
.
-------------------------------
.
## Plugins
.
> [!WARNING]
> As Rust doesn't have a stable ABI, the plugins should be
built with the exact same Rust version than `zenohd`, and using for `zenoh`
dependency the same version (or commit number) than 'zenohd'.
Otherwise, incompatibilities in memory mapping of shared types between `zenohd`
and the library can lead to a `"SIGSEV"` crash.
.
By default the Zenoh router is delivered or built with 2 plugins. These may be
configured through a configuration file, or through individual changes to the
configuration via the `--cfg` CLI option or via zenoh puts on individual parts
of the configuration.
.
> [!WARNING]
> Since `v0.6`, `zenohd` no longer loads every available plugin at startup.
Instead, only configured plugins are loaded (after processing `--cfg` and
`--plugin` options). Once `zenohd` is running, plugins can be hot-loaded and,
if they support it, reconfigured at runtime by editing their configuration
through the adminspace.
.
Note that the REST plugin is added to the configuration by the default value of
the `--rest-http-port` CLI argument.
.
**[REST plugin](https://zenoh.io/docs/manual/plugin-http/)** (exposing a REST
API):
This plugin converts GET and PUT REST requests into Zenoh gets and puts
respectively.
.
**[Storages plugin](https://zenoh.io/docs/manual/plugin-storage-manager/)**
(managing [backends and
storages](https://zenoh.io/docs/manual/plugin-storage-manager/#backends-and-volumes))
This plugin allows you to easily define storages. These will store key-value
pairs they subscribed to, and send the most recent ones when queried. Check out
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) for info on how to configure them.
.
-------------------------------
.
## Troubleshooting
.
In case of troubles, please first check on [this
page](https://zenoh.io/docs/getting-started/troubleshooting/) if the trouble
and cause are already known.
Otherwise, you can ask a question on the [zenoh Discord
server](https://discord.gg/vSDSpqnbkm), or [create an
issue](https://github.com/eclipse-zenoh/zenoh/issues).
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh
Version: 1.0.0~beta.4-1
Architecture: arm64
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 40
Depends: zenoh-plugin-storage-manager (=1.0.0~beta.4-1), zenoh-plugin-rest (=1.0.0~beta.4-1), zenohd (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh_1.0.0~beta.4-1_arm64.deb
Size: 17344
MD5sum: 85f86669ecd96eade97e259e032ca2eb
SHA1: c10a2d9a0646e2e2d8fb75f90df52a8030838439
SHA256: 79e03fc601d954e24d2c0ebe84a7f182b0921780e97f02d9b70d89846d819965
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: Zenoh: The Zero Overhead Pub/Sub/Query Protocol.
.
[](https://github.com/eclipse-zenoh/zenoh/actions?query=workflow%3A%22CI%22)
[](https://zenoh-rust.readthedocs.io/en/latest/?badge=latest)
[](https://github.com/eclipse-zenoh/roadmap/discussions)
[](https://discord.gg/2GJ958VuHs)
[](https://choosealicense.com/licenses/epl-2.0/)
[](https://opensource.org/licenses/Apache-2.0)
.
# Eclipse Zenoh
.
The Eclipse Zenoh: Zero Overhead Pub/sub, Store/Query and Compute.
.
Zenoh (pronounce _/zeno/_) unifies data in motion, data at rest and
computations. It carefully blends traditional pub/sub with geo-distributed
storages, queries and computations, while retaining a level of time and space
efficiency that is well beyond any of the mainstream stacks.
.
Check the website [zenoh.io](http://zenoh.io) and the
[roadmap](https://github.com/eclipse-zenoh/roadmap) for more detailed
information.
.
-------------------------------
.
## Getting Started
.
Zenoh is extremely easy to learn, the best place to master the fundamentals is
our [getting started guide](https://zenoh.io/docs/getting-started/first-app/).
.
-------------------------------
.
## How to install it
.
To install the latest release of the Zenoh router (`zenohd`) and its default
plugins (REST API plugin and Storages Manager plugin) you can do as follows:
.
### Manual installation (all platforms)
.
All release packages can be downloaded from
[https://download.eclipse.org/zenoh/zenoh/latest/](https://download.eclipse.org/zenoh/zenoh/latest/).
.
Each subdirectory has the name of the Rust target. See the platforms each
target corresponds to on
[https://doc.rust-lang.org/stable/rustc/platform-support.html](https://doc.rust-lang.org/stable/rustc/platform-support.html).
.
Choose your platform and download the `.zip` file.
Unzip it where you want, and run the extracted `zenohd` binary.
.
### Linux Debian
.
Add Eclipse Zenoh private repository to the sources list, and install the
`zenoh` package:
.
```bash
echo "deb [trusted=yes] https://download.eclipse.org/zenoh/debian-repo/ /" |
sudo tee -a /etc/apt/sources.list.d/zenoh.list > /dev/null
sudo apt update
sudo apt install zenoh
```
.
Then you can start run `zenohd`.
.
### MacOS
.
Tap our brew package repository and install the `zenoh` formula:
.
```bash
brew tap eclipse-zenoh/homebrew-zenoh
brew install zenoh
```
.
Then you can start run `zenohd`.
.
-------------------------------
.
## Rust API
.
* [Docs.rs for Zenoh](https://docs.rs/zenoh/latest/zenoh/)
.
-------------------------------
.
## How to build it
.
> [!WARNING]
> Zenoh and its ecosystem are under active development. When you build from
git, make sure you also build from git any other Zenoh repository you plan to
use (e.g. binding, plugin, backend, etc.). It may happen that some changes in
git are not compatible with the most recent packaged Zenoh release (e.g. deb,
docker, pip). We put particular effort in maintaining compatibility between the
various git repositories in the Zenoh project.
.
Install [Cargo and
Rust](https://doc.rust-lang.org/cargo/getting-started/installation.html). Zenoh
can be successfully compiled with Rust stable (>= 1.75.0), so no special
configuration is required from your side. If you already have the Rust
toolchain installed, make sure it is up-to-date with:
.
```bash
rustup update
```
.
To build Zenoh, just type the following command after having followed the
previous instructions:
.
```bash
cargo build --release --all-targets
```
.
Zenoh's router is built as `target/release/zenohd`. All the examples are built
into the `target/release/examples` directory. They can all work in
peer-to-peer, or interconnected via the zenoh router.
.
-------------------------------
.
## Quick tests of your build
.
### Peer-to-peer tests
.
* **pub/sub**
* run: `./target/release/examples/z_sub`
* in another shell run: `./target/release/examples/z_put`
* the subscriber should receive the publication.
.
* **get/queryable**
* run: `./target/release/examples/z_queryable`
* in another shell run: `./target/release/examples/z_get`
* the queryable should display the log in its listener, and the get should
receive the queryable result.
.
### Routed tests
.
> [!NOTE]
> **Windows users**: to properly execute the commands below in PowerShell you
need to escape `"` characters as `\"`.
.
* **put/store/get**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell run: `./target/release/examples/z_put`
* then run `./target/release/examples/z_get`
* the get should receive the stored publication.
.
* **REST API using `curl` tool**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, do a publication via the REST API:
`curl -X PUT -d '"Hello World!"' http://localhost:8000/demo/example/test`
* get it back via the REST API:
`curl http://localhost:8000/demo/example/test`
.
* **router admin space via the REST API**
* run the Zenoh router with permission to perform config changes via the
admin space, and with a memory storage:
`./target/release/zenohd --adminspace-permissions=rw
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, get info of the zenoh router via the zenoh admin space:
`curl http://localhost:8000/@/local/router`
* get the volumes of the router (only memory by default):
`curl 'http://localhost:8000/@/local/router/**/volumes/*'`
* get the storages of the local router (the memory storage configured at
startup on '/demo/example/**' should be present):
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
* add another memory storage on `/demo/mystore/**`:
`curl -X PUT -H 'content-type:application/json' -d
'{"key_expr":"demo/mystore/**","volume":"memory"}'
http://localhost:8000/@/local/router/config/plugins/storage_manager/storages/mystore`
* check it has been created:
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
.
### Configuration options
.
A Zenoh configuration file can be provided via CLI to all Zenoh examples and
the Zenoh router.
.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file and
the available options.
.
See other examples of Zenoh usage in [examples/](examples)
.
> [!NOTE]
> **Zenoh Runtime Configuration**: Starting from version 0.11.0-rc, Zenoh
allows for configuring the number of worker threads and other advanced options
of the runtime. For guidance on utilizing it, please refer to the
[doc](https://docs.rs/zenoh-runtime/latest/zenoh_runtime/enum.ZRuntime.html).
.
-------------------------------
.
## Zenoh router command line arguments
.
`zenohd` accepts the following arguments:
.
* `--adminspace-permissions <[r|w|rw|none]>`: Configure the read and/or write
permissions on the admin space. Default is read only.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file. All
properties of this configuration are optional, so you may not need such a large
configuration for your use-case.
* `--cfg :`: allows you to change specific parts of the
configuration right after it has been constructed. VALUE must be a valid JSON5
value, and key must be a path through the configuration file, where each
element is separated by a `/`. When inserting in parts of the config that are
arrays, you may use indexes, or may use `+` to indicate that you want to append
your value to the array. `--cfg` passed values will always override any
previously existing value for their key in the configuration.
* `-l, --listen ...`: An endpoint on which this router will listen
for incoming sessions.
Repeat this option to open several listeners. By default, `tcp/[::]:7447` is
used. The following endpoints are currently supported:
* TCP: `tcp/:`
* UDP: `udp/:`
* [TCP+TLS](https://zenoh.io/docs/manual/tls/): `tls/:`
* [QUIC](https://zenoh.io/docs/manual/quic/): `quic/:`
* `-e, --connect ...`: An endpoint this router will try to connect
to. Repeat this option to connect to several peers or routers.
* `--no-multicast-scouting`: By default zenohd replies to multicast scouting
messages for being discovered by peers and clients.
This option disables this feature.
* `-i, --id `: The identifier (as an hexadecimal string - e.g.:
A0B23...) that zenohd must use.
**WARNING**: this identifier must be unique in the system! If not set, a
random unsigned 128bit integer will be used.
* `--no-timestamp`: By default zenohd adds a HLC-generated Timestamp to each
routed Data if there isn't already one.
This option disables this feature.
* `-P, --plugin [ | :]...`: A
[plugin](https://zenoh.io/docs/manual/plugins/) that must be loaded. Accepted
values:
* a plugin name; zenohd will search for a library named
`libzenoh_plugin_.so` on Unix, `libzenoh_plugin_.dylib` on
MacOS or `zenoh_plugin_.dll` on Windows.
* `":"`; the plugin will be loaded from library
file at ``.
.
Repeat this option to load several plugins.
* `--plugin-search-dir ...`: A directory where to search for
[plugins](https://zenoh.io/docs/manual/plugins/) libraries to load.
Repeat this option to specify several search directories'. By default, the
plugins libraries will be searched in:
`'/usr/local/lib:/usr/lib:~/.zenoh/lib:.'`
* `--rest-http-port `: Configures the [REST
plugin](https://zenoh.io/docs/manual/plugin-http/)'s HTTP port. Accepted
values:
* a port number
* a string with format `:` (to bind the HTTP server to
a specific interface)
* `"None"` to deactivate the REST plugin
.
If not specified, the REST plugin will be active on any interface (`[::]`)
and port `8000`.
.
-------------------------------
.
## Plugins
.
> [!WARNING]
> As Rust doesn't have a stable ABI, the plugins should be
built with the exact same Rust version than `zenohd`, and using for `zenoh`
dependency the same version (or commit number) than 'zenohd'.
Otherwise, incompatibilities in memory mapping of shared types between `zenohd`
and the library can lead to a `"SIGSEV"` crash.
.
By default the Zenoh router is delivered or built with 2 plugins. These may be
configured through a configuration file, or through individual changes to the
configuration via the `--cfg` CLI option or via zenoh puts on individual parts
of the configuration.
.
> [!WARNING]
> Since `v0.6`, `zenohd` no longer loads every available plugin at startup.
Instead, only configured plugins are loaded (after processing `--cfg` and
`--plugin` options). Once `zenohd` is running, plugins can be hot-loaded and,
if they support it, reconfigured at runtime by editing their configuration
through the adminspace.
.
Note that the REST plugin is added to the configuration by the default value of
the `--rest-http-port` CLI argument.
.
**[REST plugin](https://zenoh.io/docs/manual/plugin-http/)** (exposing a REST
API):
This plugin converts GET and PUT REST requests into Zenoh gets and puts
respectively.
.
**[Storages plugin](https://zenoh.io/docs/manual/plugin-storage-manager/)**
(managing [backends and
storages](https://zenoh.io/docs/manual/plugin-storage-manager/#backends-and-volumes))
This plugin allows you to easily define storages. These will store key-value
pairs they subscribed to, and send the most recent ones when queried. Check out
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) for info on how to configure them.
.
-------------------------------
.
## Troubleshooting
.
In case of troubles, please first check on [this
page](https://zenoh.io/docs/getting-started/troubleshooting/) if the trouble
and cause are already known.
Otherwise, you can ask a question on the [zenoh Discord
server](https://discord.gg/vSDSpqnbkm), or [create an
issue](https://github.com/eclipse-zenoh/zenoh/issues).
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh-plugin-rest
Version: 1.0.0~beta.4-1
Architecture: armhf
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 7886
Depends: zenohd (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh-plugin-rest_1.0.0~beta.4-1_armhf.deb
Size: 1770080
MD5sum: eec4be557577fe0b608daa21601d16cd
SHA1: d963b0f528f765f4ebf841495c3e519391490828
SHA256: 4e58094173f60af4fbd543394cd2bb44fc93a06965050e43da5f97a91d0ea5fd
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: The zenoh REST plugin
# ⚠️ WARNING ⚠️
.
This crate is intended for Zenoh's internal use.
.
- [Click here for Zenoh's main
repository](https://github.com/eclipse-zenoh/zenoh)
- [Click here for Zenoh's documentation](https://zenoh.io)
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh-plugin-rest
Version: 1.0.0~beta.4-1
Architecture: amd64
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 10857
Depends: zenohd (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh-plugin-rest_1.0.0~beta.4-1_amd64.deb
Size: 2087104
MD5sum: 4c187b06e36c71ec7e6d30894466bb74
SHA1: 0cc3fad1765bcfaccddf986620b123487b004db9
SHA256: 1ff63e190bdfc78485d7c47c0cf176c640aa95c862ba943fa2645f64ae0b8f7d
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: The zenoh REST plugin
# ⚠️ WARNING ⚠️
.
This crate is intended for Zenoh's internal use.
.
- [Click here for Zenoh's main
repository](https://github.com/eclipse-zenoh/zenoh)
- [Click here for Zenoh's documentation](https://zenoh.io)
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh-plugin-rest
Version: 1.0.0~beta.4-1
Architecture: arm64
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 9834
Depends: zenohd (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh-plugin-rest_1.0.0~beta.4-1_arm64.deb
Size: 1909592
MD5sum: 1e9099deef51cfcda9d879a6cedf7c84
SHA1: a617702adf0a091c38740e9aa7148686c5cd2001
SHA256: 1ddac5ec53a04acc2279d6b982ee98a5f9d3fa13187869481a861c42904f0365
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: The zenoh REST plugin
# ⚠️ WARNING ⚠️
.
This crate is intended for Zenoh's internal use.
.
- [Click here for Zenoh's main
repository](https://github.com/eclipse-zenoh/zenoh)
- [Click here for Zenoh's documentation](https://zenoh.io)
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh-plugin-rest
Version: 1.0.0~beta.4-1
Architecture: armel
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 7980
Depends: zenohd (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh-plugin-rest_1.0.0~beta.4-1_armel.deb
Size: 1779316
MD5sum: a5c62cb7975a724c997caf03dbb14271
SHA1: e9d12fae359fc39992e822c60318e30dc009a5ad
SHA256: 613183f2ce00be7e30e6272cb64907e59cb5de91ad7efd48929ed451e00ec073
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: The zenoh REST plugin
# ⚠️ WARNING ⚠️
.
This crate is intended for Zenoh's internal use.
.
- [Click here for Zenoh's main
repository](https://github.com/eclipse-zenoh/zenoh)
- [Click here for Zenoh's documentation](https://zenoh.io)
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh-plugin-storage-manager
Version: 1.0.0~beta.4-1
Architecture: armhf
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 7659
Depends: zenohd (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh-plugin-storage-manager_1.0.0~beta.4-1_armhf.deb
Size: 1696624
MD5sum: a97c5f934585865f7c090f1c9ff1f540
SHA1: b130675b89061c864f4b70f73ab9c32a077db0ae
SHA256: ce0bf042255e4a978119f7453f0256b59f4b95e67ff3c2452a6ddc7910c2eed1
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: The zenoh storages plugin.
# ⚠️ WARNING ⚠️
.
This crate is intended for Zenoh's internal use.
.
- [Click here for Zenoh's main
repository](https://github.com/eclipse-zenoh/zenoh)
- [Click here for Zenoh's documentation](https://zenoh.io)
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh-plugin-storage-manager
Version: 1.0.0~beta.4-1
Architecture: arm64
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 9585
Depends: zenohd (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh-plugin-storage-manager_1.0.0~beta.4-1_arm64.deb
Size: 1814900
MD5sum: e3f544289ea324e2bfe089f4843cc3cf
SHA1: 7629fdf0a1f795c5577d49e7fd58d5583037edb6
SHA256: 03c794bf2af011e8f64bb59298d696712afd74e9af572cdb051bf61112b72c60
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: The zenoh storages plugin.
# ⚠️ WARNING ⚠️
.
This crate is intended for Zenoh's internal use.
.
- [Click here for Zenoh's main
repository](https://github.com/eclipse-zenoh/zenoh)
- [Click here for Zenoh's documentation](https://zenoh.io)
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh-plugin-storage-manager
Version: 1.0.0~beta.4-1
Architecture: amd64
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 10627
Depends: zenohd (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh-plugin-storage-manager_1.0.0~beta.4-1_amd64.deb
Size: 1992468
MD5sum: b8e7428a22dd08979b278e80a72d15f5
SHA1: 44b2627e6aeb9a1670dc05da2d4c64ab1aee1877
SHA256: b43f61a2fc25d7a006946d4705f00a57de14d5edb846c1eb36ed276a65d14e98
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: The zenoh storages plugin.
# ⚠️ WARNING ⚠️
.
This crate is intended for Zenoh's internal use.
.
- [Click here for Zenoh's main
repository](https://github.com/eclipse-zenoh/zenoh)
- [Click here for Zenoh's documentation](https://zenoh.io)
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenoh-plugin-storage-manager
Version: 1.0.0~beta.4-1
Architecture: armel
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 7771
Depends: zenohd (=1.0.0~beta.4-1)
Filename: 1.0.0-beta.4/zenoh-plugin-storage-manager_1.0.0~beta.4-1_armel.deb
Size: 1710996
MD5sum: 6ed0d7d6c81683db1697b8c9116c2467
SHA1: 5c26e81790e02e7e8c01c1962e415def3694e893
SHA256: 45b462067257f152e36e6b1095cc63f019231ff55bd6c150245cfcbfdd8d3823
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: The zenoh storages plugin.
# ⚠️ WARNING ⚠️
.
This crate is intended for Zenoh's internal use.
.
- [Click here for Zenoh's main
repository](https://github.com/eclipse-zenoh/zenoh)
- [Click here for Zenoh's documentation](https://zenoh.io)
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenohd
Version: 1.0.0~beta.4-1
Architecture: amd64
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 18015
Depends: libc6 (>= 2.29)
Filename: 1.0.0-beta.4/zenohd_1.0.0~beta.4-1_amd64.deb
Size: 4416392
MD5sum: c3534e049f3686a466af52f07048f02d
SHA1: ca02ff47ae607a95c80a909b4a358c11dd99de3d
SHA256: 93a2a3eea11401f5a264399f5a9c502765f23ff6cb7b5498da68016e33251944
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: Zenoh: The Zero Overhead Pub/Sub/Query Protocol.
.
[](https://github.com/eclipse-zenoh/zenoh/actions?query=workflow%3A%22CI%22)
[](https://zenoh-rust.readthedocs.io/en/latest/?badge=latest)
[](https://github.com/eclipse-zenoh/roadmap/discussions)
[](https://discord.gg/2GJ958VuHs)
[](https://choosealicense.com/licenses/epl-2.0/)
[](https://opensource.org/licenses/Apache-2.0)
.
# Eclipse Zenoh
.
The Eclipse Zenoh: Zero Overhead Pub/sub, Store/Query and Compute.
.
Zenoh (pronounce _/zeno/_) unifies data in motion, data at rest and
computations. It carefully blends traditional pub/sub with geo-distributed
storages, queries and computations, while retaining a level of time and space
efficiency that is well beyond any of the mainstream stacks.
.
Check the website [zenoh.io](http://zenoh.io) and the
[roadmap](https://github.com/eclipse-zenoh/roadmap) for more detailed
information.
.
-------------------------------
.
## Getting Started
.
Zenoh is extremely easy to learn, the best place to master the fundamentals is
our [getting started guide](https://zenoh.io/docs/getting-started/first-app/).
.
-------------------------------
.
## How to install it
.
To install the latest release of the Zenoh router (`zenohd`) and its default
plugins (REST API plugin and Storages Manager plugin) you can do as follows:
.
### Manual installation (all platforms)
.
All release packages can be downloaded from
[https://download.eclipse.org/zenoh/zenoh/latest/](https://download.eclipse.org/zenoh/zenoh/latest/).
.
Each subdirectory has the name of the Rust target. See the platforms each
target corresponds to on
[https://doc.rust-lang.org/stable/rustc/platform-support.html](https://doc.rust-lang.org/stable/rustc/platform-support.html).
.
Choose your platform and download the `.zip` file.
Unzip it where you want, and run the extracted `zenohd` binary.
.
### Linux Debian
.
Add Eclipse Zenoh private repository to the sources list, and install the
`zenoh` package:
.
```bash
echo "deb [trusted=yes] https://download.eclipse.org/zenoh/debian-repo/ /" |
sudo tee -a /etc/apt/sources.list.d/zenoh.list > /dev/null
sudo apt update
sudo apt install zenoh
```
.
Then you can start run `zenohd`.
.
### MacOS
.
Tap our brew package repository and install the `zenoh` formula:
.
```bash
brew tap eclipse-zenoh/homebrew-zenoh
brew install zenoh
```
.
Then you can start run `zenohd`.
.
-------------------------------
.
## Rust API
.
* [Docs.rs for Zenoh](https://docs.rs/zenoh/latest/zenoh/)
.
-------------------------------
.
## How to build it
.
> [!WARNING]
> Zenoh and its ecosystem are under active development. When you build from
git, make sure you also build from git any other Zenoh repository you plan to
use (e.g. binding, plugin, backend, etc.). It may happen that some changes in
git are not compatible with the most recent packaged Zenoh release (e.g. deb,
docker, pip). We put particular effort in maintaining compatibility between the
various git repositories in the Zenoh project.
.
Install [Cargo and
Rust](https://doc.rust-lang.org/cargo/getting-started/installation.html). Zenoh
can be successfully compiled with Rust stable (>= 1.75.0), so no special
configuration is required from your side. If you already have the Rust
toolchain installed, make sure it is up-to-date with:
.
```bash
rustup update
```
.
To build Zenoh, just type the following command after having followed the
previous instructions:
.
```bash
cargo build --release --all-targets
```
.
Zenoh's router is built as `target/release/zenohd`. All the examples are built
into the `target/release/examples` directory. They can all work in
peer-to-peer, or interconnected via the zenoh router.
.
-------------------------------
.
## Quick tests of your build
.
### Peer-to-peer tests
.
* **pub/sub**
* run: `./target/release/examples/z_sub`
* in another shell run: `./target/release/examples/z_put`
* the subscriber should receive the publication.
.
* **get/queryable**
* run: `./target/release/examples/z_queryable`
* in another shell run: `./target/release/examples/z_get`
* the queryable should display the log in its listener, and the get should
receive the queryable result.
.
### Routed tests
.
> [!NOTE]
> **Windows users**: to properly execute the commands below in PowerShell you
need to escape `"` characters as `\"`.
.
* **put/store/get**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell run: `./target/release/examples/z_put`
* then run `./target/release/examples/z_get`
* the get should receive the stored publication.
.
* **REST API using `curl` tool**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, do a publication via the REST API:
`curl -X PUT -d '"Hello World!"' http://localhost:8000/demo/example/test`
* get it back via the REST API:
`curl http://localhost:8000/demo/example/test`
.
* **router admin space via the REST API**
* run the Zenoh router with permission to perform config changes via the
admin space, and with a memory storage:
`./target/release/zenohd --adminspace-permissions=rw
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, get info of the zenoh router via the zenoh admin space:
`curl http://localhost:8000/@/local/router`
* get the volumes of the router (only memory by default):
`curl 'http://localhost:8000/@/local/router/**/volumes/*'`
* get the storages of the local router (the memory storage configured at
startup on '/demo/example/**' should be present):
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
* add another memory storage on `/demo/mystore/**`:
`curl -X PUT -H 'content-type:application/json' -d
'{"key_expr":"demo/mystore/**","volume":"memory"}'
http://localhost:8000/@/local/router/config/plugins/storage_manager/storages/mystore`
* check it has been created:
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
.
### Configuration options
.
A Zenoh configuration file can be provided via CLI to all Zenoh examples and
the Zenoh router.
.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file and
the available options.
.
See other examples of Zenoh usage in [examples/](examples)
.
> [!NOTE]
> **Zenoh Runtime Configuration**: Starting from version 0.11.0-rc, Zenoh
allows for configuring the number of worker threads and other advanced options
of the runtime. For guidance on utilizing it, please refer to the
[doc](https://docs.rs/zenoh-runtime/latest/zenoh_runtime/enum.ZRuntime.html).
.
-------------------------------
.
## Zenoh router command line arguments
.
`zenohd` accepts the following arguments:
.
* `--adminspace-permissions <[r|w|rw|none]>`: Configure the read and/or write
permissions on the admin space. Default is read only.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file. All
properties of this configuration are optional, so you may not need such a large
configuration for your use-case.
* `--cfg :`: allows you to change specific parts of the
configuration right after it has been constructed. VALUE must be a valid JSON5
value, and key must be a path through the configuration file, where each
element is separated by a `/`. When inserting in parts of the config that are
arrays, you may use indexes, or may use `+` to indicate that you want to append
your value to the array. `--cfg` passed values will always override any
previously existing value for their key in the configuration.
* `-l, --listen ...`: An endpoint on which this router will listen
for incoming sessions.
Repeat this option to open several listeners. By default, `tcp/[::]:7447` is
used. The following endpoints are currently supported:
* TCP: `tcp/:`
* UDP: `udp/:`
* [TCP+TLS](https://zenoh.io/docs/manual/tls/): `tls/:`
* [QUIC](https://zenoh.io/docs/manual/quic/): `quic/:`
* `-e, --connect ...`: An endpoint this router will try to connect
to. Repeat this option to connect to several peers or routers.
* `--no-multicast-scouting`: By default zenohd replies to multicast scouting
messages for being discovered by peers and clients.
This option disables this feature.
* `-i, --id `: The identifier (as an hexadecimal string - e.g.:
A0B23...) that zenohd must use.
**WARNING**: this identifier must be unique in the system! If not set, a
random unsigned 128bit integer will be used.
* `--no-timestamp`: By default zenohd adds a HLC-generated Timestamp to each
routed Data if there isn't already one.
This option disables this feature.
* `-P, --plugin [ | :]...`: A
[plugin](https://zenoh.io/docs/manual/plugins/) that must be loaded. Accepted
values:
* a plugin name; zenohd will search for a library named
`libzenoh_plugin_.so` on Unix, `libzenoh_plugin_.dylib` on
MacOS or `zenoh_plugin_.dll` on Windows.
* `":"`; the plugin will be loaded from library
file at ``.
.
Repeat this option to load several plugins.
* `--plugin-search-dir ...`: A directory where to search for
[plugins](https://zenoh.io/docs/manual/plugins/) libraries to load.
Repeat this option to specify several search directories'. By default, the
plugins libraries will be searched in:
`'/usr/local/lib:/usr/lib:~/.zenoh/lib:.'`
* `--rest-http-port `: Configures the [REST
plugin](https://zenoh.io/docs/manual/plugin-http/)'s HTTP port. Accepted
values:
* a port number
* a string with format `:` (to bind the HTTP server to
a specific interface)
* `"None"` to deactivate the REST plugin
.
If not specified, the REST plugin will be active on any interface (`[::]`)
and port `8000`.
.
-------------------------------
.
## Plugins
.
> [!WARNING]
> As Rust doesn't have a stable ABI, the plugins should be
built with the exact same Rust version than `zenohd`, and using for `zenoh`
dependency the same version (or commit number) than 'zenohd'.
Otherwise, incompatibilities in memory mapping of shared types between `zenohd`
and the library can lead to a `"SIGSEV"` crash.
.
By default the Zenoh router is delivered or built with 2 plugins. These may be
configured through a configuration file, or through individual changes to the
configuration via the `--cfg` CLI option or via zenoh puts on individual parts
of the configuration.
.
> [!WARNING]
> Since `v0.6`, `zenohd` no longer loads every available plugin at startup.
Instead, only configured plugins are loaded (after processing `--cfg` and
`--plugin` options). Once `zenohd` is running, plugins can be hot-loaded and,
if they support it, reconfigured at runtime by editing their configuration
through the adminspace.
.
Note that the REST plugin is added to the configuration by the default value of
the `--rest-http-port` CLI argument.
.
**[REST plugin](https://zenoh.io/docs/manual/plugin-http/)** (exposing a REST
API):
This plugin converts GET and PUT REST requests into Zenoh gets and puts
respectively.
.
**[Storages plugin](https://zenoh.io/docs/manual/plugin-storage-manager/)**
(managing [backends and
storages](https://zenoh.io/docs/manual/plugin-storage-manager/#backends-and-volumes))
This plugin allows you to easily define storages. These will store key-value
pairs they subscribed to, and send the most recent ones when queried. Check out
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) for info on how to configure them.
.
-------------------------------
.
## Troubleshooting
.
In case of troubles, please first check on [this
page](https://zenoh.io/docs/getting-started/troubleshooting/) if the trouble
and cause are already known.
Otherwise, you can ask a question on the [zenoh Discord
server](https://discord.gg/vSDSpqnbkm), or [create an
issue](https://github.com/eclipse-zenoh/zenoh/issues).
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenohd
Version: 1.0.0~beta.4-1
Architecture: armhf
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 17295
Filename: 1.0.0-beta.4/zenohd_1.0.0~beta.4-1_armhf.deb
Size: 4375220
MD5sum: 6ae1651d3b25c1dd4eb2dd34ef58672f
SHA1: f54fdd9086120ff78a08ddc8632de5e0d21373ac
SHA256: 64497c1ce29d9e418a71afd089cee3a5f9dbc3d7055898631e6d19358e27d5f2
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: Zenoh: The Zero Overhead Pub/Sub/Query Protocol.
.
[](https://github.com/eclipse-zenoh/zenoh/actions?query=workflow%3A%22CI%22)
[](https://zenoh-rust.readthedocs.io/en/latest/?badge=latest)
[](https://github.com/eclipse-zenoh/roadmap/discussions)
[](https://discord.gg/2GJ958VuHs)
[](https://choosealicense.com/licenses/epl-2.0/)
[](https://opensource.org/licenses/Apache-2.0)
.
# Eclipse Zenoh
.
The Eclipse Zenoh: Zero Overhead Pub/sub, Store/Query and Compute.
.
Zenoh (pronounce _/zeno/_) unifies data in motion, data at rest and
computations. It carefully blends traditional pub/sub with geo-distributed
storages, queries and computations, while retaining a level of time and space
efficiency that is well beyond any of the mainstream stacks.
.
Check the website [zenoh.io](http://zenoh.io) and the
[roadmap](https://github.com/eclipse-zenoh/roadmap) for more detailed
information.
.
-------------------------------
.
## Getting Started
.
Zenoh is extremely easy to learn, the best place to master the fundamentals is
our [getting started guide](https://zenoh.io/docs/getting-started/first-app/).
.
-------------------------------
.
## How to install it
.
To install the latest release of the Zenoh router (`zenohd`) and its default
plugins (REST API plugin and Storages Manager plugin) you can do as follows:
.
### Manual installation (all platforms)
.
All release packages can be downloaded from
[https://download.eclipse.org/zenoh/zenoh/latest/](https://download.eclipse.org/zenoh/zenoh/latest/).
.
Each subdirectory has the name of the Rust target. See the platforms each
target corresponds to on
[https://doc.rust-lang.org/stable/rustc/platform-support.html](https://doc.rust-lang.org/stable/rustc/platform-support.html).
.
Choose your platform and download the `.zip` file.
Unzip it where you want, and run the extracted `zenohd` binary.
.
### Linux Debian
.
Add Eclipse Zenoh private repository to the sources list, and install the
`zenoh` package:
.
```bash
echo "deb [trusted=yes] https://download.eclipse.org/zenoh/debian-repo/ /" |
sudo tee -a /etc/apt/sources.list.d/zenoh.list > /dev/null
sudo apt update
sudo apt install zenoh
```
.
Then you can start run `zenohd`.
.
### MacOS
.
Tap our brew package repository and install the `zenoh` formula:
.
```bash
brew tap eclipse-zenoh/homebrew-zenoh
brew install zenoh
```
.
Then you can start run `zenohd`.
.
-------------------------------
.
## Rust API
.
* [Docs.rs for Zenoh](https://docs.rs/zenoh/latest/zenoh/)
.
-------------------------------
.
## How to build it
.
> [!WARNING]
> Zenoh and its ecosystem are under active development. When you build from
git, make sure you also build from git any other Zenoh repository you plan to
use (e.g. binding, plugin, backend, etc.). It may happen that some changes in
git are not compatible with the most recent packaged Zenoh release (e.g. deb,
docker, pip). We put particular effort in maintaining compatibility between the
various git repositories in the Zenoh project.
.
Install [Cargo and
Rust](https://doc.rust-lang.org/cargo/getting-started/installation.html). Zenoh
can be successfully compiled with Rust stable (>= 1.75.0), so no special
configuration is required from your side. If you already have the Rust
toolchain installed, make sure it is up-to-date with:
.
```bash
rustup update
```
.
To build Zenoh, just type the following command after having followed the
previous instructions:
.
```bash
cargo build --release --all-targets
```
.
Zenoh's router is built as `target/release/zenohd`. All the examples are built
into the `target/release/examples` directory. They can all work in
peer-to-peer, or interconnected via the zenoh router.
.
-------------------------------
.
## Quick tests of your build
.
### Peer-to-peer tests
.
* **pub/sub**
* run: `./target/release/examples/z_sub`
* in another shell run: `./target/release/examples/z_put`
* the subscriber should receive the publication.
.
* **get/queryable**
* run: `./target/release/examples/z_queryable`
* in another shell run: `./target/release/examples/z_get`
* the queryable should display the log in its listener, and the get should
receive the queryable result.
.
### Routed tests
.
> [!NOTE]
> **Windows users**: to properly execute the commands below in PowerShell you
need to escape `"` characters as `\"`.
.
* **put/store/get**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell run: `./target/release/examples/z_put`
* then run `./target/release/examples/z_get`
* the get should receive the stored publication.
.
* **REST API using `curl` tool**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, do a publication via the REST API:
`curl -X PUT -d '"Hello World!"' http://localhost:8000/demo/example/test`
* get it back via the REST API:
`curl http://localhost:8000/demo/example/test`
.
* **router admin space via the REST API**
* run the Zenoh router with permission to perform config changes via the
admin space, and with a memory storage:
`./target/release/zenohd --adminspace-permissions=rw
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, get info of the zenoh router via the zenoh admin space:
`curl http://localhost:8000/@/local/router`
* get the volumes of the router (only memory by default):
`curl 'http://localhost:8000/@/local/router/**/volumes/*'`
* get the storages of the local router (the memory storage configured at
startup on '/demo/example/**' should be present):
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
* add another memory storage on `/demo/mystore/**`:
`curl -X PUT -H 'content-type:application/json' -d
'{"key_expr":"demo/mystore/**","volume":"memory"}'
http://localhost:8000/@/local/router/config/plugins/storage_manager/storages/mystore`
* check it has been created:
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
.
### Configuration options
.
A Zenoh configuration file can be provided via CLI to all Zenoh examples and
the Zenoh router.
.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file and
the available options.
.
See other examples of Zenoh usage in [examples/](examples)
.
> [!NOTE]
> **Zenoh Runtime Configuration**: Starting from version 0.11.0-rc, Zenoh
allows for configuring the number of worker threads and other advanced options
of the runtime. For guidance on utilizing it, please refer to the
[doc](https://docs.rs/zenoh-runtime/latest/zenoh_runtime/enum.ZRuntime.html).
.
-------------------------------
.
## Zenoh router command line arguments
.
`zenohd` accepts the following arguments:
.
* `--adminspace-permissions <[r|w|rw|none]>`: Configure the read and/or write
permissions on the admin space. Default is read only.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file. All
properties of this configuration are optional, so you may not need such a large
configuration for your use-case.
* `--cfg :`: allows you to change specific parts of the
configuration right after it has been constructed. VALUE must be a valid JSON5
value, and key must be a path through the configuration file, where each
element is separated by a `/`. When inserting in parts of the config that are
arrays, you may use indexes, or may use `+` to indicate that you want to append
your value to the array. `--cfg` passed values will always override any
previously existing value for their key in the configuration.
* `-l, --listen ...`: An endpoint on which this router will listen
for incoming sessions.
Repeat this option to open several listeners. By default, `tcp/[::]:7447` is
used. The following endpoints are currently supported:
* TCP: `tcp/:`
* UDP: `udp/:`
* [TCP+TLS](https://zenoh.io/docs/manual/tls/): `tls/:`
* [QUIC](https://zenoh.io/docs/manual/quic/): `quic/:`
* `-e, --connect ...`: An endpoint this router will try to connect
to. Repeat this option to connect to several peers or routers.
* `--no-multicast-scouting`: By default zenohd replies to multicast scouting
messages for being discovered by peers and clients.
This option disables this feature.
* `-i, --id `: The identifier (as an hexadecimal string - e.g.:
A0B23...) that zenohd must use.
**WARNING**: this identifier must be unique in the system! If not set, a
random unsigned 128bit integer will be used.
* `--no-timestamp`: By default zenohd adds a HLC-generated Timestamp to each
routed Data if there isn't already one.
This option disables this feature.
* `-P, --plugin [ | :]...`: A
[plugin](https://zenoh.io/docs/manual/plugins/) that must be loaded. Accepted
values:
* a plugin name; zenohd will search for a library named
`libzenoh_plugin_.so` on Unix, `libzenoh_plugin_.dylib` on
MacOS or `zenoh_plugin_.dll` on Windows.
* `":"`; the plugin will be loaded from library
file at ``.
.
Repeat this option to load several plugins.
* `--plugin-search-dir ...`: A directory where to search for
[plugins](https://zenoh.io/docs/manual/plugins/) libraries to load.
Repeat this option to specify several search directories'. By default, the
plugins libraries will be searched in:
`'/usr/local/lib:/usr/lib:~/.zenoh/lib:.'`
* `--rest-http-port `: Configures the [REST
plugin](https://zenoh.io/docs/manual/plugin-http/)'s HTTP port. Accepted
values:
* a port number
* a string with format `:` (to bind the HTTP server to
a specific interface)
* `"None"` to deactivate the REST plugin
.
If not specified, the REST plugin will be active on any interface (`[::]`)
and port `8000`.
.
-------------------------------
.
## Plugins
.
> [!WARNING]
> As Rust doesn't have a stable ABI, the plugins should be
built with the exact same Rust version than `zenohd`, and using for `zenoh`
dependency the same version (or commit number) than 'zenohd'.
Otherwise, incompatibilities in memory mapping of shared types between `zenohd`
and the library can lead to a `"SIGSEV"` crash.
.
By default the Zenoh router is delivered or built with 2 plugins. These may be
configured through a configuration file, or through individual changes to the
configuration via the `--cfg` CLI option or via zenoh puts on individual parts
of the configuration.
.
> [!WARNING]
> Since `v0.6`, `zenohd` no longer loads every available plugin at startup.
Instead, only configured plugins are loaded (after processing `--cfg` and
`--plugin` options). Once `zenohd` is running, plugins can be hot-loaded and,
if they support it, reconfigured at runtime by editing their configuration
through the adminspace.
.
Note that the REST plugin is added to the configuration by the default value of
the `--rest-http-port` CLI argument.
.
**[REST plugin](https://zenoh.io/docs/manual/plugin-http/)** (exposing a REST
API):
This plugin converts GET and PUT REST requests into Zenoh gets and puts
respectively.
.
**[Storages plugin](https://zenoh.io/docs/manual/plugin-storage-manager/)**
(managing [backends and
storages](https://zenoh.io/docs/manual/plugin-storage-manager/#backends-and-volumes))
This plugin allows you to easily define storages. These will store key-value
pairs they subscribed to, and send the most recent ones when queried. Check out
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) for info on how to configure them.
.
-------------------------------
.
## Troubleshooting
.
In case of troubles, please first check on [this
page](https://zenoh.io/docs/getting-started/troubleshooting/) if the trouble
and cause are already known.
Otherwise, you can ask a question on the [zenoh Discord
server](https://discord.gg/vSDSpqnbkm), or [create an
issue](https://github.com/eclipse-zenoh/zenoh/issues).
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenohd
Version: 1.0.0~beta.4-1
Architecture: armel
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 17511
Filename: 1.0.0-beta.4/zenohd_1.0.0~beta.4-1_armel.deb
Size: 4318688
MD5sum: 2b99c626200a3ac3bd40edf4fd471f0f
SHA1: fc43419e5844ed28bbd7c3229c75b126efd84343
SHA256: 12a8d958ab9ba64e2940734aa8139f8fb5e090507ad5107950b095e71f792895
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: Zenoh: The Zero Overhead Pub/Sub/Query Protocol.
.
[](https://github.com/eclipse-zenoh/zenoh/actions?query=workflow%3A%22CI%22)
[](https://zenoh-rust.readthedocs.io/en/latest/?badge=latest)
[](https://github.com/eclipse-zenoh/roadmap/discussions)
[](https://discord.gg/2GJ958VuHs)
[](https://choosealicense.com/licenses/epl-2.0/)
[](https://opensource.org/licenses/Apache-2.0)
.
# Eclipse Zenoh
.
The Eclipse Zenoh: Zero Overhead Pub/sub, Store/Query and Compute.
.
Zenoh (pronounce _/zeno/_) unifies data in motion, data at rest and
computations. It carefully blends traditional pub/sub with geo-distributed
storages, queries and computations, while retaining a level of time and space
efficiency that is well beyond any of the mainstream stacks.
.
Check the website [zenoh.io](http://zenoh.io) and the
[roadmap](https://github.com/eclipse-zenoh/roadmap) for more detailed
information.
.
-------------------------------
.
## Getting Started
.
Zenoh is extremely easy to learn, the best place to master the fundamentals is
our [getting started guide](https://zenoh.io/docs/getting-started/first-app/).
.
-------------------------------
.
## How to install it
.
To install the latest release of the Zenoh router (`zenohd`) and its default
plugins (REST API plugin and Storages Manager plugin) you can do as follows:
.
### Manual installation (all platforms)
.
All release packages can be downloaded from
[https://download.eclipse.org/zenoh/zenoh/latest/](https://download.eclipse.org/zenoh/zenoh/latest/).
.
Each subdirectory has the name of the Rust target. See the platforms each
target corresponds to on
[https://doc.rust-lang.org/stable/rustc/platform-support.html](https://doc.rust-lang.org/stable/rustc/platform-support.html).
.
Choose your platform and download the `.zip` file.
Unzip it where you want, and run the extracted `zenohd` binary.
.
### Linux Debian
.
Add Eclipse Zenoh private repository to the sources list, and install the
`zenoh` package:
.
```bash
echo "deb [trusted=yes] https://download.eclipse.org/zenoh/debian-repo/ /" |
sudo tee -a /etc/apt/sources.list.d/zenoh.list > /dev/null
sudo apt update
sudo apt install zenoh
```
.
Then you can start run `zenohd`.
.
### MacOS
.
Tap our brew package repository and install the `zenoh` formula:
.
```bash
brew tap eclipse-zenoh/homebrew-zenoh
brew install zenoh
```
.
Then you can start run `zenohd`.
.
-------------------------------
.
## Rust API
.
* [Docs.rs for Zenoh](https://docs.rs/zenoh/latest/zenoh/)
.
-------------------------------
.
## How to build it
.
> [!WARNING]
> Zenoh and its ecosystem are under active development. When you build from
git, make sure you also build from git any other Zenoh repository you plan to
use (e.g. binding, plugin, backend, etc.). It may happen that some changes in
git are not compatible with the most recent packaged Zenoh release (e.g. deb,
docker, pip). We put particular effort in maintaining compatibility between the
various git repositories in the Zenoh project.
.
Install [Cargo and
Rust](https://doc.rust-lang.org/cargo/getting-started/installation.html). Zenoh
can be successfully compiled with Rust stable (>= 1.75.0), so no special
configuration is required from your side. If you already have the Rust
toolchain installed, make sure it is up-to-date with:
.
```bash
rustup update
```
.
To build Zenoh, just type the following command after having followed the
previous instructions:
.
```bash
cargo build --release --all-targets
```
.
Zenoh's router is built as `target/release/zenohd`. All the examples are built
into the `target/release/examples` directory. They can all work in
peer-to-peer, or interconnected via the zenoh router.
.
-------------------------------
.
## Quick tests of your build
.
### Peer-to-peer tests
.
* **pub/sub**
* run: `./target/release/examples/z_sub`
* in another shell run: `./target/release/examples/z_put`
* the subscriber should receive the publication.
.
* **get/queryable**
* run: `./target/release/examples/z_queryable`
* in another shell run: `./target/release/examples/z_get`
* the queryable should display the log in its listener, and the get should
receive the queryable result.
.
### Routed tests
.
> [!NOTE]
> **Windows users**: to properly execute the commands below in PowerShell you
need to escape `"` characters as `\"`.
.
* **put/store/get**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell run: `./target/release/examples/z_put`
* then run `./target/release/examples/z_get`
* the get should receive the stored publication.
.
* **REST API using `curl` tool**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, do a publication via the REST API:
`curl -X PUT -d '"Hello World!"' http://localhost:8000/demo/example/test`
* get it back via the REST API:
`curl http://localhost:8000/demo/example/test`
.
* **router admin space via the REST API**
* run the Zenoh router with permission to perform config changes via the
admin space, and with a memory storage:
`./target/release/zenohd --adminspace-permissions=rw
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, get info of the zenoh router via the zenoh admin space:
`curl http://localhost:8000/@/local/router`
* get the volumes of the router (only memory by default):
`curl 'http://localhost:8000/@/local/router/**/volumes/*'`
* get the storages of the local router (the memory storage configured at
startup on '/demo/example/**' should be present):
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
* add another memory storage on `/demo/mystore/**`:
`curl -X PUT -H 'content-type:application/json' -d
'{"key_expr":"demo/mystore/**","volume":"memory"}'
http://localhost:8000/@/local/router/config/plugins/storage_manager/storages/mystore`
* check it has been created:
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
.
### Configuration options
.
A Zenoh configuration file can be provided via CLI to all Zenoh examples and
the Zenoh router.
.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file and
the available options.
.
See other examples of Zenoh usage in [examples/](examples)
.
> [!NOTE]
> **Zenoh Runtime Configuration**: Starting from version 0.11.0-rc, Zenoh
allows for configuring the number of worker threads and other advanced options
of the runtime. For guidance on utilizing it, please refer to the
[doc](https://docs.rs/zenoh-runtime/latest/zenoh_runtime/enum.ZRuntime.html).
.
-------------------------------
.
## Zenoh router command line arguments
.
`zenohd` accepts the following arguments:
.
* `--adminspace-permissions <[r|w|rw|none]>`: Configure the read and/or write
permissions on the admin space. Default is read only.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file. All
properties of this configuration are optional, so you may not need such a large
configuration for your use-case.
* `--cfg :`: allows you to change specific parts of the
configuration right after it has been constructed. VALUE must be a valid JSON5
value, and key must be a path through the configuration file, where each
element is separated by a `/`. When inserting in parts of the config that are
arrays, you may use indexes, or may use `+` to indicate that you want to append
your value to the array. `--cfg` passed values will always override any
previously existing value for their key in the configuration.
* `-l, --listen ...`: An endpoint on which this router will listen
for incoming sessions.
Repeat this option to open several listeners. By default, `tcp/[::]:7447` is
used. The following endpoints are currently supported:
* TCP: `tcp/:`
* UDP: `udp/:`
* [TCP+TLS](https://zenoh.io/docs/manual/tls/): `tls/:`
* [QUIC](https://zenoh.io/docs/manual/quic/): `quic/:`
* `-e, --connect ...`: An endpoint this router will try to connect
to. Repeat this option to connect to several peers or routers.
* `--no-multicast-scouting`: By default zenohd replies to multicast scouting
messages for being discovered by peers and clients.
This option disables this feature.
* `-i, --id `: The identifier (as an hexadecimal string - e.g.:
A0B23...) that zenohd must use.
**WARNING**: this identifier must be unique in the system! If not set, a
random unsigned 128bit integer will be used.
* `--no-timestamp`: By default zenohd adds a HLC-generated Timestamp to each
routed Data if there isn't already one.
This option disables this feature.
* `-P, --plugin [ | :]...`: A
[plugin](https://zenoh.io/docs/manual/plugins/) that must be loaded. Accepted
values:
* a plugin name; zenohd will search for a library named
`libzenoh_plugin_.so` on Unix, `libzenoh_plugin_.dylib` on
MacOS or `zenoh_plugin_.dll` on Windows.
* `":"`; the plugin will be loaded from library
file at ``.
.
Repeat this option to load several plugins.
* `--plugin-search-dir ...`: A directory where to search for
[plugins](https://zenoh.io/docs/manual/plugins/) libraries to load.
Repeat this option to specify several search directories'. By default, the
plugins libraries will be searched in:
`'/usr/local/lib:/usr/lib:~/.zenoh/lib:.'`
* `--rest-http-port `: Configures the [REST
plugin](https://zenoh.io/docs/manual/plugin-http/)'s HTTP port. Accepted
values:
* a port number
* a string with format `:` (to bind the HTTP server to
a specific interface)
* `"None"` to deactivate the REST plugin
.
If not specified, the REST plugin will be active on any interface (`[::]`)
and port `8000`.
.
-------------------------------
.
## Plugins
.
> [!WARNING]
> As Rust doesn't have a stable ABI, the plugins should be
built with the exact same Rust version than `zenohd`, and using for `zenoh`
dependency the same version (or commit number) than 'zenohd'.
Otherwise, incompatibilities in memory mapping of shared types between `zenohd`
and the library can lead to a `"SIGSEV"` crash.
.
By default the Zenoh router is delivered or built with 2 plugins. These may be
configured through a configuration file, or through individual changes to the
configuration via the `--cfg` CLI option or via zenoh puts on individual parts
of the configuration.
.
> [!WARNING]
> Since `v0.6`, `zenohd` no longer loads every available plugin at startup.
Instead, only configured plugins are loaded (after processing `--cfg` and
`--plugin` options). Once `zenohd` is running, plugins can be hot-loaded and,
if they support it, reconfigured at runtime by editing their configuration
through the adminspace.
.
Note that the REST plugin is added to the configuration by the default value of
the `--rest-http-port` CLI argument.
.
**[REST plugin](https://zenoh.io/docs/manual/plugin-http/)** (exposing a REST
API):
This plugin converts GET and PUT REST requests into Zenoh gets and puts
respectively.
.
**[Storages plugin](https://zenoh.io/docs/manual/plugin-storage-manager/)**
(managing [backends and
storages](https://zenoh.io/docs/manual/plugin-storage-manager/#backends-and-volumes))
This plugin allows you to easily define storages. These will store key-value
pairs they subscribed to, and send the most recent ones when queried. Check out
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) for info on how to configure them.
.
-------------------------------
.
## Troubleshooting
.
In case of troubles, please first check on [this
page](https://zenoh.io/docs/getting-started/troubleshooting/) if the trouble
and cause are already known.
Otherwise, you can ask a question on the [zenoh Discord
server](https://discord.gg/vSDSpqnbkm), or [create an
issue](https://github.com/eclipse-zenoh/zenoh/issues).
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh
Package: zenohd
Version: 1.0.0~beta.4-1
Architecture: arm64
Maintainer: zenoh-dev@eclipse.org
Installed-Size: 16163
Filename: 1.0.0-beta.4/zenohd_1.0.0~beta.4-1_arm64.deb
Size: 3972524
MD5sum: 72822dfc5fd4df23736e5c4dd4691d9e
SHA1: c189c7b3b2502eb4159050f9a95c3e3a632b3754
SHA256: c4e84c99696e3174732e21be7cfb86c1ceff26dad3d199b6e280ef510ccbd663
Section: net
Priority: optional
Homepage: http://zenoh.io
Description: Zenoh: The Zero Overhead Pub/Sub/Query Protocol.
.
[](https://github.com/eclipse-zenoh/zenoh/actions?query=workflow%3A%22CI%22)
[](https://zenoh-rust.readthedocs.io/en/latest/?badge=latest)
[](https://github.com/eclipse-zenoh/roadmap/discussions)
[](https://discord.gg/2GJ958VuHs)
[](https://choosealicense.com/licenses/epl-2.0/)
[](https://opensource.org/licenses/Apache-2.0)
.
# Eclipse Zenoh
.
The Eclipse Zenoh: Zero Overhead Pub/sub, Store/Query and Compute.
.
Zenoh (pronounce _/zeno/_) unifies data in motion, data at rest and
computations. It carefully blends traditional pub/sub with geo-distributed
storages, queries and computations, while retaining a level of time and space
efficiency that is well beyond any of the mainstream stacks.
.
Check the website [zenoh.io](http://zenoh.io) and the
[roadmap](https://github.com/eclipse-zenoh/roadmap) for more detailed
information.
.
-------------------------------
.
## Getting Started
.
Zenoh is extremely easy to learn, the best place to master the fundamentals is
our [getting started guide](https://zenoh.io/docs/getting-started/first-app/).
.
-------------------------------
.
## How to install it
.
To install the latest release of the Zenoh router (`zenohd`) and its default
plugins (REST API plugin and Storages Manager plugin) you can do as follows:
.
### Manual installation (all platforms)
.
All release packages can be downloaded from
[https://download.eclipse.org/zenoh/zenoh/latest/](https://download.eclipse.org/zenoh/zenoh/latest/).
.
Each subdirectory has the name of the Rust target. See the platforms each
target corresponds to on
[https://doc.rust-lang.org/stable/rustc/platform-support.html](https://doc.rust-lang.org/stable/rustc/platform-support.html).
.
Choose your platform and download the `.zip` file.
Unzip it where you want, and run the extracted `zenohd` binary.
.
### Linux Debian
.
Add Eclipse Zenoh private repository to the sources list, and install the
`zenoh` package:
.
```bash
echo "deb [trusted=yes] https://download.eclipse.org/zenoh/debian-repo/ /" |
sudo tee -a /etc/apt/sources.list.d/zenoh.list > /dev/null
sudo apt update
sudo apt install zenoh
```
.
Then you can start run `zenohd`.
.
### MacOS
.
Tap our brew package repository and install the `zenoh` formula:
.
```bash
brew tap eclipse-zenoh/homebrew-zenoh
brew install zenoh
```
.
Then you can start run `zenohd`.
.
-------------------------------
.
## Rust API
.
* [Docs.rs for Zenoh](https://docs.rs/zenoh/latest/zenoh/)
.
-------------------------------
.
## How to build it
.
> [!WARNING]
> Zenoh and its ecosystem are under active development. When you build from
git, make sure you also build from git any other Zenoh repository you plan to
use (e.g. binding, plugin, backend, etc.). It may happen that some changes in
git are not compatible with the most recent packaged Zenoh release (e.g. deb,
docker, pip). We put particular effort in maintaining compatibility between the
various git repositories in the Zenoh project.
.
Install [Cargo and
Rust](https://doc.rust-lang.org/cargo/getting-started/installation.html). Zenoh
can be successfully compiled with Rust stable (>= 1.75.0), so no special
configuration is required from your side. If you already have the Rust
toolchain installed, make sure it is up-to-date with:
.
```bash
rustup update
```
.
To build Zenoh, just type the following command after having followed the
previous instructions:
.
```bash
cargo build --release --all-targets
```
.
Zenoh's router is built as `target/release/zenohd`. All the examples are built
into the `target/release/examples` directory. They can all work in
peer-to-peer, or interconnected via the zenoh router.
.
-------------------------------
.
## Quick tests of your build
.
### Peer-to-peer tests
.
* **pub/sub**
* run: `./target/release/examples/z_sub`
* in another shell run: `./target/release/examples/z_put`
* the subscriber should receive the publication.
.
* **get/queryable**
* run: `./target/release/examples/z_queryable`
* in another shell run: `./target/release/examples/z_get`
* the queryable should display the log in its listener, and the get should
receive the queryable result.
.
### Routed tests
.
> [!NOTE]
> **Windows users**: to properly execute the commands below in PowerShell you
need to escape `"` characters as `\"`.
.
* **put/store/get**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell run: `./target/release/examples/z_put`
* then run `./target/release/examples/z_get`
* the get should receive the stored publication.
.
* **REST API using `curl` tool**
* run the Zenoh router with a memory storage:
`./target/release/zenohd
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, do a publication via the REST API:
`curl -X PUT -d '"Hello World!"' http://localhost:8000/demo/example/test`
* get it back via the REST API:
`curl http://localhost:8000/demo/example/test`
.
* **router admin space via the REST API**
* run the Zenoh router with permission to perform config changes via the
admin space, and with a memory storage:
`./target/release/zenohd --adminspace-permissions=rw
--cfg='plugins/storage_manager/storages/demo:{key_expr:"demo/example/**",volume:"memory"}'`
* in another shell, get info of the zenoh router via the zenoh admin space:
`curl http://localhost:8000/@/local/router`
* get the volumes of the router (only memory by default):
`curl 'http://localhost:8000/@/local/router/**/volumes/*'`
* get the storages of the local router (the memory storage configured at
startup on '/demo/example/**' should be present):
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
* add another memory storage on `/demo/mystore/**`:
`curl -X PUT -H 'content-type:application/json' -d
'{"key_expr":"demo/mystore/**","volume":"memory"}'
http://localhost:8000/@/local/router/config/plugins/storage_manager/storages/mystore`
* check it has been created:
`curl 'http://localhost:8000/@/local/router/**/storages/*'`
.
### Configuration options
.
A Zenoh configuration file can be provided via CLI to all Zenoh examples and
the Zenoh router.
.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file and
the available options.
.
See other examples of Zenoh usage in [examples/](examples)
.
> [!NOTE]
> **Zenoh Runtime Configuration**: Starting from version 0.11.0-rc, Zenoh
allows for configuring the number of worker threads and other advanced options
of the runtime. For guidance on utilizing it, please refer to the
[doc](https://docs.rs/zenoh-runtime/latest/zenoh_runtime/enum.ZRuntime.html).
.
-------------------------------
.
## Zenoh router command line arguments
.
`zenohd` accepts the following arguments:
.
* `--adminspace-permissions <[r|w|rw|none]>`: Configure the read and/or write
permissions on the admin space. Default is read only.
* `-c, --config `: a [JSON5](https://json5.org) configuration file.
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) shows the schema of this file. All
properties of this configuration are optional, so you may not need such a large
configuration for your use-case.
* `--cfg :`: allows you to change specific parts of the
configuration right after it has been constructed. VALUE must be a valid JSON5
value, and key must be a path through the configuration file, where each
element is separated by a `/`. When inserting in parts of the config that are
arrays, you may use indexes, or may use `+` to indicate that you want to append
your value to the array. `--cfg` passed values will always override any
previously existing value for their key in the configuration.
* `-l, --listen ...`: An endpoint on which this router will listen
for incoming sessions.
Repeat this option to open several listeners. By default, `tcp/[::]:7447` is
used. The following endpoints are currently supported:
* TCP: `tcp/:`
* UDP: `udp/:`
* [TCP+TLS](https://zenoh.io/docs/manual/tls/): `tls/:`
* [QUIC](https://zenoh.io/docs/manual/quic/): `quic/:`
* `-e, --connect ...`: An endpoint this router will try to connect
to. Repeat this option to connect to several peers or routers.
* `--no-multicast-scouting`: By default zenohd replies to multicast scouting
messages for being discovered by peers and clients.
This option disables this feature.
* `-i, --id `: The identifier (as an hexadecimal string - e.g.:
A0B23...) that zenohd must use.
**WARNING**: this identifier must be unique in the system! If not set, a
random unsigned 128bit integer will be used.
* `--no-timestamp`: By default zenohd adds a HLC-generated Timestamp to each
routed Data if there isn't already one.
This option disables this feature.
* `-P, --plugin [ | :]...`: A
[plugin](https://zenoh.io/docs/manual/plugins/) that must be loaded. Accepted
values:
* a plugin name; zenohd will search for a library named
`libzenoh_plugin_.so` on Unix, `libzenoh_plugin_.dylib` on
MacOS or `zenoh_plugin_.dll` on Windows.
* `":"`; the plugin will be loaded from library
file at ``.
.
Repeat this option to load several plugins.
* `--plugin-search-dir ...`: A directory where to search for
[plugins](https://zenoh.io/docs/manual/plugins/) libraries to load.
Repeat this option to specify several search directories'. By default, the
plugins libraries will be searched in:
`'/usr/local/lib:/usr/lib:~/.zenoh/lib:.'`
* `--rest-http-port `: Configures the [REST
plugin](https://zenoh.io/docs/manual/plugin-http/)'s HTTP port. Accepted
values:
* a port number
* a string with format `:` (to bind the HTTP server to
a specific interface)
* `"None"` to deactivate the REST plugin
.
If not specified, the REST plugin will be active on any interface (`[::]`)
and port `8000`.
.
-------------------------------
.
## Plugins
.
> [!WARNING]
> As Rust doesn't have a stable ABI, the plugins should be
built with the exact same Rust version than `zenohd`, and using for `zenoh`
dependency the same version (or commit number) than 'zenohd'.
Otherwise, incompatibilities in memory mapping of shared types between `zenohd`
and the library can lead to a `"SIGSEV"` crash.
.
By default the Zenoh router is delivered or built with 2 plugins. These may be
configured through a configuration file, or through individual changes to the
configuration via the `--cfg` CLI option or via zenoh puts on individual parts
of the configuration.
.
> [!WARNING]
> Since `v0.6`, `zenohd` no longer loads every available plugin at startup.
Instead, only configured plugins are loaded (after processing `--cfg` and
`--plugin` options). Once `zenohd` is running, plugins can be hot-loaded and,
if they support it, reconfigured at runtime by editing their configuration
through the adminspace.
.
Note that the REST plugin is added to the configuration by the default value of
the `--rest-http-port` CLI argument.
.
**[REST plugin](https://zenoh.io/docs/manual/plugin-http/)** (exposing a REST
API):
This plugin converts GET and PUT REST requests into Zenoh gets and puts
respectively.
.
**[Storages plugin](https://zenoh.io/docs/manual/plugin-storage-manager/)**
(managing [backends and
storages](https://zenoh.io/docs/manual/plugin-storage-manager/#backends-and-volumes))
This plugin allows you to easily define storages. These will store key-value
pairs they subscribed to, and send the most recent ones when queried. Check out
[DEFAULT_CONFIG.json5](DEFAULT_CONFIG.json5) for info on how to configure them.
.
-------------------------------
.
## Troubleshooting
.
In case of troubles, please first check on [this
page](https://zenoh.io/docs/getting-started/troubleshooting/) if the trouble
and cause are already known.
Otherwise, you can ask a question on the [zenoh Discord
server](https://discord.gg/vSDSpqnbkm), or [create an
issue](https://github.com/eclipse-zenoh/zenoh/issues).
Vcs-Browser: https://github.com/eclipse-zenoh/zenoh
Vcs-Git: https://github.com/eclipse-zenoh/zenoh