Initial commit on Forgejo

Fresh repository history for elektrine/elektrine-haraka hosted at
https://git.elektrine.com/elektrine/elektrine-haraka.

lib/telemetry.js

@@ -0,0 +1,65 @@
+/**
+ * Minimal structured telemetry helper.
+ */
+
+'use strict';
+
+function compact(fields) {
+    const out = {};
+    Object.entries(fields || {}).forEach(([key, value]) => {
+        if (value !== undefined) out[key] = value;
+    });
+    return out;
+}
+
+function emit(log_fn, level, scope, event, fields = {}) {
+    const payload = compact({
+        ts: new Date().toISOString(),
+        level,
+        scope,
+        event,
+        ...fields
+    });
+
+    const line = JSON.stringify(payload);
+    log_fn(line);
+}
+
+function create_plugin_logger(plugin, scope) {
+    return {
+        info(event, fields) {
+            emit((line) => plugin.loginfo(line), 'info', scope, event, fields);
+        },
+        warn(event, fields) {
+            emit((line) => plugin.logwarn(line), 'warn', scope, event, fields);
+        },
+        error(event, fields) {
+            emit((line) => plugin.logerror(line), 'error', scope, event, fields);
+        },
+        debug(event, fields) {
+            emit((line) => plugin.logdebug(line), 'debug', scope, event, fields);
+        }
+    };
+}
+
+function create_console_logger(scope) {
+    return {
+        info(event, fields) {
+            emit((line) => console.log(line), 'info', scope, event, fields);
+        },
+        warn(event, fields) {
+            emit((line) => console.warn(line), 'warn', scope, event, fields);
+        },
+        error(event, fields) {
+            emit((line) => console.error(line), 'error', scope, event, fields);
+        },
+        debug(event, fields) {
+            emit((line) => console.debug(line), 'debug', scope, event, fields);
+        }
+    };
+}
+
+module.exports = {
+    create_plugin_logger,
+    create_console_logger
+};