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Unless we tell pexpect to expect something it will not read from the
process' buffer, or write anything to the logfile. If we follow the
collector instructions from devlib's documentation:
In [1]: from devlib import AndroidTarget, LogcatCollector
In [2]: t = AndroidTarget()
# Set up the collector on the Target.
In [3]: collector = LogcatCollector(t)
# Configure the output file path for the collector to use.
In [4]: collector.set_output('adb_log.txt')
# Reset the Collector to preform any required configuration or
# preparation.
In [5]: collector.reset()
# Start Collecting
In [6]: collector.start()
# Wait for some output to be generated
In [7]: sleep(10)
# Stop Collecting
In [8]: collector.stop()
# Retrieved the collected data
In [9]: output = collector.get_data()
adb_log.txt will be empty because between collector.start() and
collector.stop() there were no expect() calls to
LogcatMonitor._logcat. As the get_log() function already has code to
flush the log, abstract it to a function and call it in stop() before
terminating the pexpect.spawn().
devlib
======
``devlib`` exposes an interface for interacting with and collecting
measurements from a variety of devices (such as mobile phones, tablets and
development boards) running a Linux-based operating system.
Installation
------------
::
sudo -H pip install devlib
Dependencies
------------
``devlib`` should install all dependencies automatically, however if you run
into issues please ensure you are using that latest version of pip.
On some systems there may additional steps required to install the dependency
``paramiko`` please consult the `module documentation <http://www.paramiko.org/installing.html>`_
for more information.
Usage
-----
Please refer to the "Overview" section of the `documentation <http://devlib.readthedocs.io/en/latest/>`_.
License
-------
This package is distributed under `Apache v2.0 License <http://www.apache.org/licenses/LICENSE-2.0>`_.
Feedback, Contrubutions and Support
-----------------------------------
- Please use the GitHub Issue Tracker associated with this repository for
feedback.
- ARM licensees may contact ARM directly via their partner managers.
- We welcome code contributions via GitHub Pull requests. Please try to
stick to the style in the rest of the code for your contributions.