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wiki:ew2file
Last modified 19 months ago Last modified on 02/29/12 16:10:14

# Earthworm Module: ew2file

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## Function

Converts EARTHWORM messages into files (in binary form).

## Details

The ew2file program will take any message from a ring and write it to a file in a specified directory. The Earthworm message is written verbatim (in binary form) and is thus not generally readable. It writes timestamps on the files if the packet type is one of TYPE_PICK2K, TYPE_PICK_SCNL, or TYPE_HYP2000ARC and the TimeBasedFilename flag is set in the .d file. This module can be used in conjunction with sendfile/getfile to send messages as files. Its counterpart is file2ew.

### Example Configuration File

    #   ew2file_generic configuration file
    #
    #
     MyModuleId     MOD_EW2FILE         # module id for this program
     InRing         SM_RING             # transport ring to use for input
     HeartBeatInt   30                  # EW internal heartbeat interval (sec)
     LogFile        1                   # If 0, don't write logfile
                                        # if 2, write to module log but not to
                                        # stderr/stdout .
    #
    # Logos of messages to export to client systems
    # Each message of a given logo will be written to a file with the specified
    # File Suffix at the end of the file name folloing `.'.
    # Do NOT include a `.' in the suffix.
    # Use as many GetMsgLogo commands as you want.
    #              Installation       Module       Message Type        File Suffix
     GetMsgLogo    INST_UCB        MOD_REDI2EW   TYPE_STRONGMOTIONII     smUCB

     MaxMsgSize        512         # maximum size (bytes) for input msgs
     QueueSize         1000        # number of msgs to buffer

     TimeBasedFilename 1           # set non-zero if you want a time string in the
                                   # form of "yyyymmdd-hhmmss." at the beginning of
                                   # each output file. The timestring is generated from
                                   # msg contents, currently possible for only msgtypes:
                                   # TYPE_PICK2K, TYPE_PICK_SCNL, TYPE_HYP2000ARC

    # OneFilePerMessage 1  		# an optional mode of ew2file to store all messages to a single file instead of
    				# the normal one file per message. This is useful for debugging purposes, or for gathering picks

    # Optional heartbeat file commands.
    #----------------------------------
    # Default HeartFileInt is 0 => send no heartbeat files.
    # Default HeartFileMsg is "Alive".
    # Default HeartFileSuffix is "hrt"
     HeartFileInt     30           # heartbeat file interval; optional
     HeartFileMsg     Alive        # string for heartbeat file; optional
     HeartFileSuffix  hrtUCB       # suffix for heartbeat files; do not include `.'

    # SerialKeeper: File name where the serial number of the output files is
    # stored. This should be a unique file name, in the params directory.
    # If the file does not exist, ew2file will attempt to create it.
    SerialKeeper  ew2file_keeper

    # TempDir: Directory in which files are created. This directory must be in the
    # same filesystem as all the SendDir directories. Exactly one TempDir is required.
    TempDir      /home/earthworm/run/ew2file/temp

    # SendDir: Directory to which output files will be moved after they have
    # been created.
    #  Use as many SendDir commands as you need.
    # Be sure the final line is terminated with a newline.
    SendDir      /home/earthworm/run/ew2file/Menlo
    SendDir	     /home/earthworm/run/ew2file/CGS
    SendDir	     /home/earthworm/run/ew2file/Pas

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