Official Repository

Last pushed: 7 days ago
Short Description
Lightstreamer is a real-time messaging server optimized for the Internet.
Full Description

Supported tags and respective Dockerfile links

For more information about this image and its history, please see the relevant manifest file (library/lightstreamer). This image is updated via pull requests to the docker-library/official-images GitHub repo.

For detailed information about the virtual/transfer sizes and individual layers of each of the above supported tags, please see the repos/lightstreamer/tag-details.md file in the docker-library/repo-info GitHub repo.

What is Lightstreamer Server?

Lightstreamer is a real-time messaging server optimized for the Internet. Blending WebSockets, HTTP, and push notifications, it streams data to/from mobile, tablet, browser-based, desktop, and IoT applications.

For more information and related downloads for Lightstreamer Server and other Lightstreaner products, please visit www.lightstreamer.com.

How to use this image

Up and Running

Launch the container with the default configuration:

$ docker run --name ls-server -d -p 80:8080 lightstreamer

This will map port 8080 inside the container to port 80 on local host. Then point your browser to http://localhost and watch the Welcome page showing real time data flowing in from the locally deployed demo application, which is a first overview of the unique features offered by the Lightstreamer technology. More examples are available online at the demo site.

Custom settings

It is possibile to customize each aspect of the Lightstreamer instance running into the container. For example, a specific configuration file may be supplied as follows:

$ docker run --name ls-server -v /path/to/my-lightstreamer_conf.xml:/lightstreamer/conf/lightstreamer_conf.xml -d -p 80:8080 lightstreamer

In the same way, you could provide a custom logging configuration, maybe in this case also specifying a dedicated volume to ensure both the persistence of log files and better performance of the container:

$ docker run --name ls-server -v /path/to/my-lightstreamer_log_conf.xml:/lightstreamer/conf/lightstreamer_log_conf.xml -v /path/to/logs:/lightstreamer/logs -d -p 80:8080 lightstreamer

If you also change in your my-lightstreamer_log_conf.xml file the default logging path from ../logs to /path/to/dest/logs:

$ docker run --name ls-server -v /path/to/my-lightstreamer_log_conf.xml:/lightstreamer/conf/lightstreamer_log_conf.xml -v /path/to/hosted/logs:/path/to/dest/logs -d -p 80:8080 lightstreamer

Alternatively, the above tasks can be executed by deriving a new image through a Dockerfile as the following:

FROM lightstreamer

# Please specify a COPY command only for the the required custom configuration file
COPY my-lightstreamer_conf.xml /lightstreamer/conf/lightstreamer_conf.xml
COPY my-lightstreamer_log_conf.xml /lightstreamer/conf/lightstreamer_log_conf.xml

where my-lightstreamer_conf.xml and my-lightstreamer_log_conf.xml are your custom configuration files, placed in the same directory as the Dockerfile. By simply running the command:

$ docker build -t my-lightstreamer .

the new image will be built along with the provided files. After that, launch the container:

$ docker run --name ls-server -d -p 80:8080 my-lightstreamer

To get more detailed information on how to configure the Lightstreamer server, please see the inline documentation in the lighstreamer_conf.xml and lighstreamer_log_conf.xml files you can find under the conf folder of the installation directory.

Deployment of Adapter Sets

You might want to use this image even with any Adapter Set, either developed by yourself or provided by third parties.

To accomplish such goal, you may use similar strategies to those illustrated above:

Deployment of a single Adapter Set

To deploy a single custom Adapter Set, the simplest way is to attach its files into the factory adapters folder, as follows:

$ docker run --name ls-server -v /path/to/my-adapter-set:/lightstreamer/adapters/my-adapter-set -d -p 80:8080 lightstreamer

Full replacement of the "adapters" folder

In the case you have many custom Adapter Sets to deploy, a more appropriate strategy is to replace the factory adapters folder with the one located in your host machine:

$ docker run --name ls-server -v /path/to/my-adapters:/lightstreamer/adapters -d -p 80:8080 lightstreamer

In this case, the /path/to/my-adapters folder has to be structured with the required layout for an adapters folder:

/path/to/my-adapters+
                    +my_adapter_set_1
                    +my_adapter_set_2
                    ...
                    +my_adapter_set_N

Building a new image

Once again, a linear and clean approach is to make a new image including all needed files.

In this case, you could write a simple Docker file in which the list of all your Adapter Sets configuration files is provided:

FROM lightstreamer

# Will copy the contents of N Adapter Sets into the factory adapters folder
COPY my-adapter-set-1 /lightstreamer/adapters/my-adapter-set-1
COPY my-adapter-set-2 /lightstreamer/adapters/my-adapter-set-2
COPY my-adapter-set-3 /lightstreamer/adapters/my-adapter-set-3

Then, just build and start the container as already explained.

Deployment of web server pages

There might be some circumstances where you would like provide custom pages for the internal web server of the Lightstreamer Server. Even in this case, it is possible to customize the container by employing the same techniques as above.

For example, with the following command you will be able to fully replace the factory pages folder:

$ docker run --name ls-server -v /path/to/custom/pages:/lightstreamer/pages -d -p 80:8080 lightstreamer

where /path/to/custom/pages is the path in your host machine containing the replacing web content files.

License

View license information for the software contained in this image.

Supported Docker versions

This image is officially supported on Docker version 1.13.0.

Support for older versions (down to 1.6) is provided on a best-effort basis.

Please see the Docker installation documentation for details on how to upgrade your Docker daemon.

User Feedback

Issues

If you have any problems with or questions about this image, please contact us through a GitHub issue. If the issue is related to a CVE, please check for a cve-tracker issue on the official-images repository first.

You can also reach many of the official image maintainers via the #docker-library IRC channel on Freenode.

Contributing

You are invited to contribute new features, fixes, or updates, large or small; we are always thrilled to receive pull requests, and do our best to process them as fast as we can.

Before you start to code, we recommend discussing your plans through a GitHub issue, especially for more ambitious contributions. This gives other contributors a chance to point you in the right direction, give you feedback on your design, and help you find out if someone else is working on the same thing.

Documentation

Documentation for this image is stored in the lightstreamer/ directory of the docker-library/docs GitHub repo. Be sure to familiarize yourself with the repository's README.md file before attempting a pull request.

Docker Pull Command

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