Use Codecov (#8388)

* Use Codecov

Upload coverage reports to Codecov. For now, having Codecov comment on
PRs or enforcing a minimum coverage threshold are both disabled until
the Codecov coverage reports look reliable:
https://codecov.io/gh/apache/incubator-druid

* Split bash and curl into separate lines

.codecov.yml

@@ -0,0 +1,31 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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
+#
+#     http://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.
+
+
+# Documentation for Codecov yaml: https://docs.codecov.io/docs/codecov-yaml
+#
+# Validate changes with:
+# curl --data-binary @.codecov.yml https://codecov.io/validate
+
+# Documentation for pull request comments: https://docs.codecov.io/docs/pull-request-comments
+# Consider enabling pull request comments after codecov reports look reliable.
+comment: off
+
+coverage:
+  # Documentation for commit status: https://docs.codecov.io/docs/commit-status
+  # Consider enabling commit status to enforce minimum coverage thresholds after codecov reports look reliable.
+  status:
+    project: off
+    patch: off

.travis.yml

@@ -115,6 +115,11 @@ matrix:
           ${MAVEN_SKIP} -Dremoteresources.skip=true
         - sh -c "dmesg | egrep -i '(oom|out of memory|kill process|killed).*' -C 1 || exit 0"
         - free -m
+      after_success: &upload_java_unit_test_coverage
+        - ${MVN} -pl ${MAVEN_PROJECTS} jacoco:report
+        # retry in case of network error
+        - travis_retry curl -o codecov.sh -s https://codecov.io/bash
+        - travis_retry bash codecov.sh -X gcov
 
     - name: "processing module test (SQL Compatibility)"
       env: *processing_env
@@ -127,43 +132,53 @@ matrix:
           ${MAVEN_SKIP} -Dremoteresources.skip=true
         - sh -c "dmesg | egrep -i '(oom|out of memory|kill process|killed).*' -C 1 || exit 0"
         - free -m
+      after_success: *upload_java_unit_test_coverage
 
     - name: "indexing modules test"
       env: &indexing_env
       - MAVEN_PROJECTS='indexing-hadoop,indexing-service,extensions-core/kafka-indexing-service,extensions-core/kinesis-indexing-service'
       before_script: *setup_java_test
       script: *run_java_test
+      after_success: *upload_java_unit_test_coverage
 
     - name: "indexing modules test (SQL Compatibility)"
       env: *indexing_env
       before_script: *setup_java_test
       script: *run_java_sql_compat_test
+      after_success: *upload_java_unit_test_coverage
 
     - name: "server module test"
       env: &server_env
         - MAVEN_PROJECTS='server'
       before_script: *setup_java_test
       script: *run_java_test
+      after_success: *upload_java_unit_test_coverage
 
     - name: "server module test (SQL Compatibility)"
       env: *server_env
       before_script: *setup_java_test
       script: *run_java_sql_compat_test
+      after_success: *upload_java_unit_test_coverage
 
     - name: "other modules test"
       env: &other_env
         - MAVEN_PROJECTS='!processing,!indexing-hadoop,!indexing-service,!extensions-core/kafka-indexing-service,!extensions-core/kinesis-indexing-service,!server,!web-console'
       before_script: *setup_java_test
       script: *run_java_test
+      after_success: *upload_java_unit_test_coverage
 
     - name: "other modules test (SQL Compatibility)"
       env: *other_env
       before_script: *setup_java_test
       script: *run_java_sql_compat_test
+      after_success: *upload_java_unit_test_coverage
 
     - name: "web console"
       install: skip
-      script: ${MVN} test -pl 'web-console'
+      script:
+        - ${MVN} test -pl 'web-console'
+      after_success:
+        - (cd web-console && travis_retry npm run codecov)  # retry in case of network error
 
     - name: "docs"
       install: (cd website && npm install)

README.md

@@ -20,9 +20,9 @@
 [![Slack](https://img.shields.io/badge/slack-%23druid-72eff8?logo=slack)](https://druid.apache.org/community/join-slack)
 [![Build Status](https://travis-ci.org/apache/incubator-druid.svg?branch=master)](https://travis-ci.org/apache/incubator-druid)
 [![Language grade: Java](https://img.shields.io/lgtm/grade/java/g/apache/incubator-druid.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/apache/incubator-druid/context:java)
+[![Coverage Status](https://img.shields.io/codecov/c/gh/apache/incubator-druid)](https://codecov.io/gh/apache/incubator-druid)
 [![Docker](https://img.shields.io/badge/container-docker-blue.svg)](https://hub.docker.com/r/apache/incubator-druid)
 <!--- Following badges are disabled until they can be fixed: -->
-<!--- [![Coverage Status](https://coveralls.io/repos/github/apache/incubator-druid/badge.svg?branch=master)](https://coveralls.io/github/apache/incubator-druid?branch=master) -->
 <!--- [![Inspections Status](https://img.shields.io/teamcity/http/teamcity.jetbrains.com/s/OpenSourceProjects_Druid_Inspections.svg?label=TeamCity%20inspections)](https://teamcity.jetbrains.com/viewType.html?buildTypeId=OpenSourceProjects_Druid_Inspections) -->
 
 ## Apache Druid (incubating)

pom.xml

@@ -984,7 +984,8 @@
                         <exclude>org/apache/druid/data/input/influx/InfluxLineProtocol*</exclude>  <!-- extensions-contrib/influx-extensions -->
 
                         <!-- Ignore non-production code -->
-                        <exclude>org/apache/druid/**/*Benchmark.*</exclude>  <!-- benchmarks -->
+                        <exclude>org/apache/druid/benchmark/**/*</exclude>  <!-- benchmarks -->
+                        <exclude>org/apache/druid/**/*Benchmark*</exclude>  <!-- benchmarks -->
                         <exclude>org/testng/DruidTestRunnerFactory*</exclude>  <!-- benchmarks -->
                         <exclude>org/apache/druid/testing/**/*</exclude>  <!-- integration-tests -->
                     </excludes>