Event Log Skill | Agent Skills

Event Log

JSONL-based event logging for external program integration. Events mirror database event creation and enable hooks similar to Claude Code's event system.

Purpose

Emit structured events for external consumers
Enable hook-based integrations
Mirror the database event stream

Log Location

Default: .ikigai/logs/current.log
Override: $IKIGAI_LOG_DIR/current.log

APIs

DI-Based (Preferred)

#include "logger.h"

// Create logger with explicit context
ik_logger_t *logger = ik_logger_create(ctx, working_dir);

// Create and emit event
yyjson_mut_doc *doc = ik_log_create();
yyjson_mut_val *root = yyjson_mut_doc_get_root(doc);
yyjson_mut_obj_add_str(doc, root, "event", "chunk_received");
yyjson_mut_obj_add_int(doc, root, "bytes", len);
ik_logger_debug_json(logger, doc);  // Takes ownership, frees doc

Legacy Global (Migration)

// Initialize once
ik_log_init(working_dir);

// Emit events
yyjson_mut_doc *doc = ik_log_create();
// ... populate doc ...
ik_log_debug_json(doc);  // Takes ownership

// Shutdown
ik_log_shutdown();

Log Levels

| Level | Function | Purpose | |-------|----------|---------| | debug | ik_logger_debug_json() | Verbose event tracing | | info | ik_logger_info_json() | Normal operations | | warn | ik_logger_warn_json() | Recoverable issues | | error | ik_logger_error_json() | Failures | | fatal | ik_logger_fatal_json() | Calls exit(1) after logging |

Output Format

Each line is a JSON object:

{"level":"debug","timestamp":"2025-01-15T10:30:00.123-05:00","logline":{"event":"chunk_received","bytes":1024}}

Inspecting Events

tail -f .ikigai/logs/current.log

Source Files

src/logger.h - API declarations
src/logger.c - Implementation

Agent Skills: Event Log

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