Robot Framework remote servers allow hosting test libraries on different processes or machines than Robot Framework itself is running on. See the general remote library interface documentation for more information about the remote interface as well as for a list of remote server implementations in other programming languages.
This project is hosted in GitHub and downloads are available in PyPI.
This remote server is implemented with Python and supports also Jython (JVM), IronPython (.NET) and PyPy. Remote server 1.1 and newer support Python 2.6, 2.7, 3.3, and newer. Remote server 1.0 series supports Python versions 2.2-2.7.
Starting from Remote server 1.1, Robot Framework's normal static, hybrid and dynamic library APIs are all supported. This includes setting custom name and tags for keywords using the robot.api.deco.keyword decorator. Earlier versions support only the static and hybrid APIs and do not support the keyword decorator.
For most parts these APIs work exactly like when using with Robot Framework normally. There main limitation is that logging using robot.api.logger
or Python's logging
module is not supported.
The easiest installation approach is using pip:
pip install robotremoteserver
Alternatively you can download the source distribution from PyPI, extract it and install the server using:
python setup.py install
The remote server can be started by simply creating an instance of the server and passing a test library instance or module to it:
python
from robotremoteserver import RobotRemoteServer from mylibrary import MyLibrary
RobotRemoteServer(MyLibrary())
By default the server listens to address 127.0.0.1 and port 8270. See the next section for information about configuring the server.
The remote server accepts following configuration parameters:
Argument Default Explanation library
Test library instance or module to host. Mandatory argument. host
'127.0.0.1'
Address to listen. Use '0.0.0.0'
to listen to all available interfaces.port
8270
Port to listen. Use 0
to select a free port automatically. Can be given as an integer or as a string.port_file
None
File to write port that is used. None
means no such file is written.allow_stop
'DEPRECATED'
DEPRECATED. User allow_remote_stop
instead.serve
True
If True
, start the server automatically and wait for it to be stopped. IfFalse
, server can be started usingserve
orstart
methods. New in version 1.1.allow_remote_stop
True
Allow/disallow stopping the server using Stop Remote Server
keyword andstop_remote_server
XML-RPC method. New in version 1.1.
Address and port that are used are printed to the console where the server is started. Writing port to a file by using port_file
argument is especially useful when the server selects a free port automatically. Other tools can then easily read the active port from the file. If the file is removed prior to starting the server, tools can also wait until the file exists to know that the server is up and running. Starting from version 1.1, the server removes the port file automatically.
Example:
python
from robotremoteserver import RobotRemoteServer from mylibrary import MyLibrary
- RobotRemoteServer(MyLibrary(), host='10.0.0.42', port=0,
port_file='/tmp/remote-port.txt')
Starting from versoin 1.1, the server can also first be initialized and started afterwards:
python
- server = RobotRemoteServer(MyLibrary(), host='10.0.0.42', port=0,
port_file='/tmp/remote-port.txt', serve=False)
server.serve()
The above is totally equivalent to the earlier example and both of them result with the server starting and running until it is explicitly stopped. Alternatively it is possible to start the server on background.
The remote server can be gracefully stopped using several different methods:
- Hitting
Ctrl-C
on the console where the server is running. Does not work reliably with version 1.0 or earlier or if using Python 2.5 or older. - Sending the process
SIGINT
,SIGTERM
, orSIGHUP
signal. Does not work on Windows. Notice that with Jython you need to send the signal to the started Java process, not to the shell typically started byjython
command. - Using
Stop Remote Server
keyword. - Using
stop_remote_server
function in the XML-RPC interface. - Running
python -m robotremoteserver stop [uri]
or usingstop_remote_server
function similarly as when testing is server running. - Calling
stop
method of the running server object.
Using Stop Remote Server
keyword, stop_remote_server
XML-RPC function or stopping functionality provided by robotremoteserver
itself can all be disabled by using allow_remote_stop=False
when initializing the server.
Sometimes it is useful to start the server on background and keep doing something else, like starting more servers, on the main thread. Starting from RobotRemoteServer 1.1 this can be accomplished easily:
python
from robotremoteserver import RobotRemoteServer from mylibrary import MyLibrary
server = RobotRemoteServer(MyLibrary(), port=0, serve=False) server.start() print('Remote server started on port %d.' % server.server_port) # Do something ... server.stop()
As the above example illustrates, the start
method starts the server on background. When the server is started on background, none of the earlier methods to stop the server work. Instead the server can be stopped, as shown in the example, by using the stop
method.
Starting from version 1.0.1 , robotremoteserver
module supports testing is a remote server running. This can be accomplished by running the module as a script with test
argument and an optional URI:
$ python -m robotremoteserver test
Remote server running at http://127.0.0.1:8270.
$ python -m robotremoteserver test http://10.0.0.42:57347
No remote server running at http://10.0.0.42:57347.
Starting from version 1.1, robotremoteserver
module contains function stop_remote_server
that can be used programmatically:
python
from robotremoteserver import test_remote_server
- if test_remote_server('http://localhost:8270'):
print('Remote server running!')
robotremoteserver
can be also used to stop a remote server by using stop
argument on the command line or by using stop_remote_server
function programmatically. Testing and stopping should work also with other Robot Framework remote server implementations.
The remote server project contains an example that can be studied and also executed once the library is installed. You can get the example by cloning the project on GitHub, and it is also included in the source distribution available on PyPI.