.. _sec-events: ###### Events ###### .. contents:: .. note:: With release of OctoPrint 1.1.0, the payload data has been harmonized, it is now a key-value-map for all events. Additionally, the format of the placeholders in both system command and gcode command triggers has been changed to accommodate for this new format. Last but not least, the way of specifying event hooks has changed, OctoPrint no longer separates hooks into two sections (gcodeCommandTrigger and systemCommandTrigger) but instead event hooks are now typed to indicate what to do with the command contained. .. _sec-events-configuration: Configuration ============= Event hooks are configured via OctoPrint's configuration file ``config.yaml``. There they are contained in a ``subscriptions`` list located directly under the ``events`` node. The ``command`` node accepts either a single string or a list of strings so that multiple commands can be executed in one go. Each hook carries an additional node type that must be either ``gcode`` (for GCODE commands to be sent to the printer based on the event) or ``system`` (for commands to be executed on the system OctoPrint is running on). All event hooks can be disabled completely by setting ``event > enabled`` to ``false``. You can also disable individual hooks by setting the (optional) node ``enabled`` to false, see the example below. Example ------- .. sourcecode:: yaml events: enabled: True subscriptions: - event: Disconnected command: python ~/growl.py -t mygrowlserver -d "Lost connection to printer" -a OctoPrint -i http://raspi/Octoprint_logo.png type: system enabled: false - event: PrintStarted command: python ~/growl.py -t mygrowlserver -d "Starting {file}" -a OctoPrint -i http://raspi/Octoprint_logo.png type: system - event: PrintDone command: python ~/growl.py -t mygrowlserver -d "Completed {file}" -a OctoPrint -i http://raspi/Octoprint_logo.png type: system - event: Connected command: - M115 - M117 printer connected! - G28 type: gcode .. _sec-events-placeholders: Placeholders ============ You can use the following generic placeholders in your event hooks: * ``{__currentZ}``: the current Z position of the head if known, -1 if not available * ``{__filename}``: filename of the currently selected file, "NO FILE" if not available * ``{__progress}``: the progress of the print in percent, 0 if not available * ``{__data}``: a string representation of the payload * ``{__now}``: the date and time of the event in ISO 8601 Additionally, all data from the payload can be accessed by its key. Example: If the payload happens to be defined something like this: * ``file``: the file's name * ``origin``: the origin of the file, either ``local`` or ``sdcard`` then you'll be able to access the filename via the placeholder ``{file}`` and the origin via the placeholder ``{origin}``. .. _sec-events-available_events: Available Events ================ Server ------ Startup The server has started ClientOpened A client has connected to the web server. Payload: * ``remoteAddress``: the remote address (IP) of the client that connected **Note:** Name changed in version 1.1.0 ClientClosed A client has disconnected from the webserver Payload: * ``remoteAddress``: the remote address (IP) of the client that disconnected Printer communication --------------------- Connected The server has connected to the printer. Payload: * ``port``: the connected serial port * ``baudrate``: the baud rate Disconnected The server has disconnected from the printer Error An error has occurred in the printer communication. Payload: * ``error``: the error string File handling ------------- Upload A file has been uploaded. Payload: * ``file``: the file's name * ``target``: the target to which the file was uploaded, either ``local`` or ``sdcard`` UpdatedFiles A file list was modified. Payload: * ``type``: the type of file list that was modified. Currently only ``printables`` and ``gcode`` (DEPRECATED) are supported here. .. note:: The type ``gcode`` has been renamed to ``printables`` with the introduction of a new file management layer that supports STL files as first class citizens as well. For reasons of backwards compatibility the ``UpdatedFiles`` event for printable files will be fired twice, once with ``type`` set to ``gcode``, once set to ``printables``. Support for the ``gcode`` type will be removed in the next release after version 1.2.0. MetadataAnalysisStarted The metadata analysis of a GCODE file has started. Payload: * ``file``: the file's name MetadataAnalaysisFinished The metadata analysis of a GCODE file has finished. Payload: * ``file``: the file's name * ``result``: the analysis result -- this is a python object currently only available for internal use FileSelected A GCODE file has been selected for printing. Payload: * ``file``: the full path to the file * ``filename``: the file's name * ``origin``: the origin of the file, either ``local`` or ``sdcard`` FileDeselected No file is selected any more for printing. TransferStarted A GCODE file transfer to SD has started. Payload: * ``local``: the file's name as stored locally * ``remote``: the file's name as stored on SD **Note:** Name changed in version 1.1.0 TransferDone A GCODE file transfer to SD has finished. Payload: * ``time``: the time it took for the transfer to complete in seconds * ``local``: the file's name as stored locally * ``remote``: the file's name as stored on SD Printing -------- PrintStarted A print has started. Payload: * ``file``: the file's name * ``origin``: the origin of the file, either ``local`` or ``sdcard`` PrintFailed A print failed. Payload: * ``file``: the file's name * ``origin``: the origin of the file, either ``local`` or ``sdcard`` PrintDone A print completed successfully. Payload: * ``file``: the file's name * ``origin``: the origin of the file, either ``local`` or ``sdcard`` * ``time``: the time needed for the print, in seconds (float) PrintCancelled The print has been cancelled via the cancel button. Payload: * ``file``: the file's name * ``origin``: the origin of the file, either ``local`` or ``sdcard`` PrintPaused The print has been paused. Payload: * ``file``: the file's name * ``origin``: the origin of the file, either ``local`` or ``sdcard`` PrintResumed The print has been resumed. Payload: * ``file``: the file's name * ``origin``: the origin of the file, either ``local`` or ``sdcard`` GCODE processing ---------------- PowerOn The GCode has turned on the printer power via M80 PowerOff The GCODE has turned on the printer power via M81 Home The head has gone home via G28 ZChange The printer's Z-Height has changed (new layer) Paused The print has been paused Waiting The print is paused due to a gcode wait command Cooling The GCODE has enabled the platform cooler via M245 Alert The GCODE has issued a user alert (beep) via M300 Conveyor The GCODE has enabled the conveyor belt via M240 Eject The GCODE has enabled the part ejector via M40 EStop The GCODE has issued a panic stop via M112 Timelapses ---------- CaptureStart A timelapse image has started to be captured. Payload: * ``file``: the name of the image file to be saved CaptureDone A timelapse image has completed being captured. Payload: * ``file``: the name of the image file that was saved MovieRendering The timelapse movie has started rendering. Payload: * ``gcode``: the GCODE file for which the timelapse would have been created (only the filename without the path) * ``movie``: the movie file that is being created (full path) * ``movie_basename``: the movie file that is being created (only the file name without the path) MovieDone The timelapse movie is completed. Payload: * ``gcode``: the GCODE file for which the timelapse would have been created (only the filename without the path) * ``movie``: the movie file that has been created (full path) * ``movie_basename``: the movie file that has been created (only the file name without the path) MovieFailed There was an error while rendering the timelapse movie. Payload: * ``gcode``: the GCODE file for which the timelapse would have been created (only the filename without the path) * ``movie``: the movie file that would have been created (full path) * ``movie_basename``: the movie file that would have been created (only the file name without the path) * ``returncode``: the return code of ``ffmpeg`` that indicates the error that occurred Slicing ------- SlicingStarted The slicing of a file has started. Payload: * ``stl``: the STL's filename * ``gcode``: the sliced GCODE's filename * ``progressAvailable``: true if progress information via the ``slicingProgress`` push update will be available, false if not SlicingDone The slicing of a file has completed. Payload: * ``stl``: the STL's filename * ``gcode``: the sliced GCODE's filename * ``time``: the time needed for slicing, in seconds (float) SlicingCancelled The slicing of a file has been cancelled. This will happen if a second slicing job targeting the same GCODE file has been started by the user. Payload: * ``stl``: the STL's filename * ``gcode``: the sliced GCODE's filename SlicingFailed The slicing of a file has failed. Payload: * ``stl``: the STL's filename * ``gcode``: the sliced GCODE's filename * ``reason``: the reason for the slicing having failed Settings -------- SettingsUpdated The internal settings were updated.