initial commit

server/node_modules/@opentelemetry/api/build/esnext/trace/NoopTracer.js

@@ -0,0 +1,71 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ContextAPI } from '../api/context';
+import { getSpanContext, setSpan } from '../trace/context-utils';
+import { NonRecordingSpan } from './NonRecordingSpan';
+import { isSpanContextValid } from './spancontext-utils';
+const contextApi = ContextAPI.getInstance();
+/**
+ * No-op implementations of {@link Tracer}.
+ */
+export class NoopTracer {
+    // startSpan starts a noop span.
+    startSpan(name, options, context = contextApi.active()) {
+        const root = Boolean(options === null || options === void 0 ? void 0 : options.root);
+        if (root) {
+            return new NonRecordingSpan();
+        }
+        const parentFromContext = context && getSpanContext(context);
+        if (isSpanContext(parentFromContext) &&
+            isSpanContextValid(parentFromContext)) {
+            return new NonRecordingSpan(parentFromContext);
+        }
+        else {
+            return new NonRecordingSpan();
+        }
+    }
+    startActiveSpan(name, arg2, arg3, arg4) {
+        let opts;
+        let ctx;
+        let fn;
+        if (arguments.length < 2) {
+            return;
+        }
+        else if (arguments.length === 2) {
+            fn = arg2;
+        }
+        else if (arguments.length === 3) {
+            opts = arg2;
+            fn = arg3;
+        }
+        else {
+            opts = arg2;
+            ctx = arg3;
+            fn = arg4;
+        }
+        const parentContext = ctx !== null && ctx !== void 0 ? ctx : contextApi.active();
+        const span = this.startSpan(name, opts, parentContext);
+        const contextWithSpanSet = setSpan(parentContext, span);
+        return contextApi.with(contextWithSpanSet, fn, undefined, span);
+    }
+}
+function isSpanContext(spanContext) {
+    return (typeof spanContext === 'object' &&
+        typeof spanContext['spanId'] === 'string' &&
+        typeof spanContext['traceId'] === 'string' &&
+        typeof spanContext['traceFlags'] === 'number');
+}
+//# sourceMappingURL=NoopTracer.js.map