MessageTemplates (message-templates.Message

Quick Start

  (* Configure and set global logger *)
  let logger =
    Configuration.create ()
    |> Configuration.write_to_console ~colors:true ()
    |> Configuration.build
  in
  Log.set_logger logger;

  (* Log with structured data *)
  Log.information "User {username} logged in from {ip}"
    [("username", `String "alice"); ("ip", `String "192.168.1.1")]

Features

Type-safe message templates with compile-time validation
Structured JSON output (CLEF format)
Multiple sinks (console, file, JSON)
Log rotation (daily, hourly)
Contextual properties that flow across scopes
Correlation ID support for distributed tracing
Zero overhead when logging is disabled

Core Types

module Types = Types

module Level = Level

module Log_event = Log_event

Template Parsing

module Template_parser = Template_parser

module Runtime_helpers = Runtime_helpers

Sinks

module Sink = Sink

module Null_sink = Null_sink

module Console_sink = Console_sink

module File_sink = File_sink

module Json_sink = Json_sink

module Composite_sink = Composite_sink

Configuration and Logging

module Filter = Filter

module Configuration = Configuration

module Logger = Logger

module Log = Log

module Log_context = Log_context