package gapi-ocaml
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Dune Dependency
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doc/gapi-ocaml.netsys-local/Netlog/index.html
Module NetlogSource
Basic logging facility
The purpose of this module is to define a mutable logging function which ensures to be always pointing to a valid logging implementation. By default, the function prints the messages to stderr, prepended by a timestamp. In Netplex context, the implementation is changed so that the Netplex logger is used instead (see Netplex_log), and the log and logf functions below have the same effect as the counterparts in Netplex_cenv with the same name.
The log levels (syslog-like)
channel_logger ch lev: Prints all messages with a level of lev and higher to the channel ch. The output buffer is flushed after each message,
The variable containing the current logger function. Defaults to channel_logger stderr `Debug at program startup. Assign something else to this variable in order to change the log destination or the log level.
Note that the function Netplex_main.run modifies current_logger so log messages are forwarded to the Netplex logger. It is then the Netplex framework that determines log destination and level.
The level names indexed by weight
format_timestamp fmt digits (seconds,nanos): Formats the timestamp (seconds,nanos) and returns the string. Pass in digits the number of digits for fractional seconds.
`Std: This is the "%c" format ofNetdate`ISO: ISO-8601 format
The current timestamp formatter
Example: Change the format of timestamps to ISO with a precision of milliseconds:
Netlog.current_formatter := Netlog.format_timestamp `ISO 3