Watcher
This component writes records passing through the <flow> into <file> in text format.
Works only when variable ‘EVL_WATCHER’ is set to ‘1’, otherwise does nothing. One can use it for debugging data in ‘DEV’ or ‘TEST’ environment, but it would be switched off in ‘PROD’.
EVD is EVL data definition file, for details see evl-evd(5).
Synopsis
Watcher <flow> <file> (<evd>|-d <inline_evd>) [-x|--text-input] evl watcher ( --help | --usage | --version )
Options
- -d, --output-definition=<inline_evd>
-
either this option or the file
<evd_out>must be presented. Example: ‘-d 'user_sum long'’ - -x, --text-input
-
suppose the input as text, not binary
Standard options:
- --help
-
print this help and exit
- --usage
-
print short usage information and exit
- --version
-
print version and exit
Examples
- In EVL job (‘evs’ file):
Sort FLOW_01 FLOW_02 some.evd --key='id' Watcher FLOW_02 sorted.csv some.evd