@genkit-ai/core/lib/logging.mjs

Genkit AI framework core libraries.

import { context } from "@opentelemetry/api";
import { logs, SeverityNumber } from "@opentelemetry/api-logs";
const LOG_LEVELS = ["debug", "info", "warn", "error"];
const loggerKey = "__genkit_logger";
const _defaultLogger = {
  shouldLog(targetLevel) {
    return LOG_LEVELS.indexOf(this.level) <= LOG_LEVELS.indexOf(targetLevel);
  },
  debug(...args) {
    this.shouldLog("debug") && console.debug(...args);
  },
  info(...args) {
    this.shouldLog("info") && console.info(...args);
  },
  warn(...args) {
    this.shouldLog("warn") && console.warn(...args);
  },
  error(...args) {
    this.shouldLog("error") && console.error(...args);
  },
  level: "info"
};
function getLogger() {
  if (!global[loggerKey]) {
    global[loggerKey] = _defaultLogger;
  }
  return global[loggerKey];
}
class Logger {
  defaultLogger = _defaultLogger;
  _emitOtel(level, args, explicitBody, explicitAttributes) {
    if (process.env.GENKIT_OTEL_ENABLE_LOGS !== "true") {
      return;
    }
    try {
      const currentLevel = getLogger().level || "info";
      if (LOG_LEVELS.indexOf(currentLevel) > LOG_LEVELS.indexOf(level)) {
        return;
      }
      const otelLogger = logs.getLogger("genkit-logger");
      let severityNumber;
      switch (level) {
        case "debug":
          severityNumber = SeverityNumber.DEBUG;
          break;
        case "info":
          severityNumber = SeverityNumber.INFO;
          break;
        case "warn":
          severityNumber = SeverityNumber.WARN;
          break;
        case "error":
          severityNumber = SeverityNumber.ERROR;
          break;
        default:
          severityNumber = SeverityNumber.UNSPECIFIED;
          break;
      }
      let body;
      const attributes = explicitAttributes || {};
      if (explicitBody !== void 0) {
        body = explicitBody;
      } else if (args.length === 1 && typeof args[0] === "string") {
        body = args[0];
      } else {
        const util = require("util");
        body = util.format(...args);
      }
      let activeContext;
      try {
        activeContext = context.active();
      } catch (e) {
      }
      otelLogger.emit({
        severityNumber,
        severityText: level.toUpperCase(),
        body,
        attributes,
        ...activeContext ? { context: activeContext } : {}
      });
    } catch (err) {
    }
  }
  init(fn) {
    global[loggerKey] = fn;
  }
  info(...args) {
    getLogger().info.apply(getLogger(), args);
    this._emitOtel("info", args);
  }
  debug(...args) {
    getLogger().debug.apply(getLogger(), args);
    this._emitOtel("debug", args);
  }
  error(...args) {
    getLogger().error.apply(getLogger(), args);
    this._emitOtel("error", args);
  }
  warn(...args) {
    getLogger().warn.apply(getLogger(), args);
    this._emitOtel("warn", args);
  }
  setLogLevel(level) {
    getLogger().level = level;
  }
  logStructured(msg, metadata) {
    getLogger().info(msg, metadata);
    this._emitOtel("info", [], msg, metadata);
  }
  logStructuredError(msg, metadata) {
    getLogger().error(msg, metadata);
    this._emitOtel("error", [], msg, metadata);
  }
}
const logger = new Logger();
export {
  logger
};
//# sourceMappingURL=logging.mjs.map