Add SpanExporter

.circleci/config.yml

@@ -1,33 +1,75 @@
 version: 2
 
+unit_tests: &unit_tests
+  steps:
+    - checkout
+    - run:
+        name: Create Checksum
+        command: sh .circleci/checksum.sh /tmp/checksums.txt
+    - restore_cache:
+        keys:
+          - npm-cache-{{ checksum "/tmp/checksums.txt" }}
+    - run:
+        name: Install Dependencies
+        command: yarn install
+    - save_cache:
+        key: npm-cache-{{ checksum "/tmp/checksums.txt" }}
+        paths:
+          - ./node_modules
+          - ./yarn.lock
+          - ./packages/*/node_modules
+          - ./packages/*/yarn.lock
+    - run:
+        name: Compile
+        command: yarn compile
+    - run:
+        name: Test
+        command: yarn test
+    - run:
+        name: report-coverage
+        command: yarn codecov
+
 jobs:
-  build:
+  lint:
     docker:
-      - image: circleci/node:12
+      - image: node
     steps:
       - checkout
       - run:
-          name: Create Checksum
-          command: sh .circleci/checksum.sh /tmp/checksums.txt
-      - restore_cache:
-          keys:
-            - npm-cache-{{ checksum "/tmp/checksums.txt" }}
-      - run:
-          name: Install Dependencies
-          command: yarn install
-      - save_cache:
-          key: npm-cache-{{ checksum "/tmp/checksums.txt" }}
-          paths:
-            - ./node_modules
-            - ./yarn.lock
-            - ./packages/*/node_modules
-            - ./packages/*/yarn.lock
-      - run:
-          name: Lint
-          command: yarn run check
+          name: Install modules and dependencies.
+          command: npm install
       - run:
-          name: Compile
-          command: yarn compile
-      - run:
-          name: Test
-          command: yarn test
+        name: Check code style and linting
+        command: npm run check
+  node8:
+    docker:
+      - image: node:8
+    <<: *unit_tests
+  node10:
+    docker:
+      - image: node:10
+    <<: *unit_tests
+  node11:
+    docker:
+      - image: node:11
+    <<: *unit_tests
+  node12:
+    docker:
+      - image: node:12
+    <<: *unit_tests
+  node12-browsers:
+    docker:
+      - image: circleci/node:12-browsers
+    <<: *unit_tests
+
+
+workflows:
+  version: 2
+  build:
+    jobs:
+      - lint
+      - node8
+      - node10
+      - node11
+      - node12
+      - node12-browsers

packages/opentelemetry-types/src/trace/export/SpanExporter.ts

@@ -0,0 +1,32 @@
+/**
+ * Copyright 2019, 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 { Span } from '../span';
+
+/**
+ * An interface that allows different tracing services to export recorded data
+ * for sampled spans in their own format.
+ */
+export interface SpanExporter {
+  /**
+   * Called to export sampled {@link Span}s.
+   * @param spans the list of sampled Spans to be exported.
+   */
+  export(spans: Span[]): void;
+
+  /** Stops the exporter. */
+  stop(): void;
+}