Improve branch naming

Summary: Rename mainline branch from master -> main.

Test Plan: Jenkins

Reviewers: michelle, #engineering

Reviewed By: michelle, #engineering

Differential Revision: https://phab.corp.pixielabs.ai/D5457

GitOrigin-RevId: 6fa17bb0e40d6cc8361151d047c333f15528733b

.arcconfig

 {
   "phabricator.uri" : "https://phab.corp.pixielabs.ai/",
   "repository.callsign": "PLM",
-  "arc.land.onto.default": "master",
-  "base": "git:merge-base(origin/master), arc:prompt",
-  "arc.feature.start.default": "origin/master",
+  "arc.land.onto.default": "main",
+  "base": "git:merge-base(origin/main), arc:prompt",
+  "arc.feature.start.default": "origin/main",
     "load": ["./linters/arc-tslint", "./linters/arcanist-go",
              "./linters/clang-format-linter", "./linters/shellcheck-linter", "./linters/pinterest", "./linters"],
   "unit.engine": "PLTestEngine"

Jenkinsfile

@@ -111,16 +111,16 @@ devDockerImageExtrasWithTag = ''
 stashList = [];
 
 // Flag controlling if coverage job is enabled.
-isMasterCodeReviewRun =  (env.JOB_NAME == "pixielabs-master-phab-test")
-isMasterRun =  (env.JOB_NAME == "pixielabs-master")
-isNightlyTestRegressionRun = (env.JOB_NAME == "pixielabs-master-nightly-test-regression")
-isCLIBuildRun =  env.JOB_NAME.startsWith("pixielabs-master-cli-release-build/")
-isVizierBuildRun = env.JOB_NAME.startsWith("pixielabs-master-vizier-release-build/")
-isCloudStagingBuildRun = env.JOB_NAME.startsWith("pixielabs-master-cloud-staging-build/")
-isCloudProdBuildRun = env.JOB_NAME.startsWith("pixielabs-master-cloud-release-build/")
+isMainCodeReviewRun =  (env.JOB_NAME == "pixielabs-main-phab-test")
+isMainRun =  (env.JOB_NAME == "pixielabs-main")
+isNightlyTestRegressionRun = (env.JOB_NAME == "pixielabs-main-nightly-test-regression")
+isCLIBuildRun =  env.JOB_NAME.startsWith("pixielabs-main-cli-release-build/")
+isVizierBuildRun = env.JOB_NAME.startsWith("pixielabs-main-vizier-release-build/")
+isCloudStagingBuildRun = env.JOB_NAME.startsWith("pixielabs-main-cloud-staging-build/")
+isCloudProdBuildRun = env.JOB_NAME.startsWith("pixielabs-main-cloud-release-build/")
 
 // TODO(zasgar): Fix the coverage job which is broken due to GCC upgrade.
-runCoverageJob = false; // isMasterRun
+runCoverageJob = false; // isMainRun
 
 // Currently disabling TSAN on BPF builds because it runs too slow.
 // In particular, the uprobe deployment takes far too long. See issue:
@@ -178,7 +178,7 @@ def addBuildInfo = {
 
   def text = ""
   def link = ""
-  // Either a revision of a commit to master.
+  // Either a revision of a commit to main.
   if (params.REVISION) {
     def revisionId = "D${REVISION}"
     text = revisionId
@@ -197,7 +197,7 @@ def addBuildInfo = {
 
 /**
  * @brief Returns true if it's a phabricator triggered build.
- *  This could either be code review build or master commit.
+ *  This could either be code review build or main commit.
  */
 def isPhabricatorTriggeredBuild() {
   return params.PHID != null && params.PHID != ""
@@ -225,7 +225,7 @@ def writeBazelRCFile() {
 }
 
 def createBazelStash(String stashName) {
-  if (!isMasterCodeReviewRun || shFileExists("bazel-testlogs-archive")) {
+  if (!isMainCodeReviewRun || shFileExists("bazel-testlogs-archive")) {
     sh 'rm -rf bazel-testlogs-archive'
     sh 'cp -a bazel-testlogs/ bazel-testlogs-archive'
     stashOnGCS(stashName, 'bazel-testlogs-archive/**')
@@ -327,14 +327,14 @@ def bazelCCCICmd(String name, String targetConfig='clang', String targetCompilat
 }
 
 /**
-  * Runs bazel CI mode for master/phab builds.
+  * Runs bazel CI mode for main/phab builds.
   *
   * The targetFilter can either be a bazel filter clause, or bazel path (//..., etc.), but not a list of paths.
   */
 def bazelCICmd(String name, String targetConfig='clang', String targetCompilationMode='opt',
                String targetFilter=BAZEL_SRC_FILES_PATH) {
   warnError('Bazel command failed') {
-    if (isMasterCodeReviewRun) {
+    if (isMainCodeReviewRun) {
       def targetPattern = targetFilter
       sh """
         TARGET_PATTERN='${targetPattern}' CONFIG=${targetConfig} \
@@ -434,9 +434,9 @@ def postBuildActions = {
     codeReviewPostBuild()
   }
 
-  // Master runs are triggered by Phabricator, but we still want
+  // Main runs are triggered by Phabricator, but we still want
   // notifications on failure.
-  if (!isPhabricatorTriggeredBuild() || isMasterRun) {
+  if (!isPhabricatorTriggeredBuild() || isMainRun) {
     sendSlackNotification()
   }
 }
@@ -480,13 +480,13 @@ builders['Clang-tidy'] = {
   WithSourceCode {
     dockerStep {
       def stashName = 'build-clang-tidy-logs'
-      if (isMasterRun) {
-        // For master builds we run clang tidy on changes files in the past 10 revisions,
+      if (isMainRun) {
+        // For main builds we run clang tidy on changes files in the past 10 revisions,
         // this gives us a good balance of speed and coverage.
         sh 'scripts/run_clang_tidy.sh -f diff_head_cc'
       } else {
         // For code review builds only run on diff.
-        sh 'scripts/run_clang_tidy.sh -f diff_origin_master_cc'
+        sh 'scripts/run_clang_tidy.sh -f diff_origin_main_cc'
       }
       stashOnGCS(stashName, 'clang_tidy.log')
       stashList.add(stashName)
@@ -512,7 +512,7 @@ builders['Build & Test All (opt + UI)'] = {
       }
 
       // File might not always exist because of test run caching.
-      // TODO(zasgar): Make sure this file is fetched for master run, otherwise we
+      // TODO(zasgar): Make sure this file is fetched for main run, otherwise we
       // might have issues with coverage.
       def uiTestResults = 'bazel-testlogs-archive/src/ui/ui-tests/test.outputs/outputs.zip'
       if (shFileExists(uiTestResults)) {
@@ -569,12 +569,12 @@ if (runBPFWithTSAN) {
   }
 }
 
-// Only run coverage on master test.
+// Only run coverage on main test.
 if (runCoverageJob) {
   builders['Build & Test (gcc:coverage)'] = {
     WithSourceCode {
       dockerStep {
-        sh "scripts/collect_coverage.sh -u -t ${CODECOV_TOKEN} -b master -c `cat GIT_COMMIT`"
+        sh "scripts/collect_coverage.sh -u -t ${CODECOV_TOKEN} -b main -c `cat GIT_COMMIT`"
         createBazelStash('build-gcc-coverage-testlogs')
       }
     }
@@ -612,13 +612,13 @@ builders['Lint & Docs'] = {
  * The build script starts here.
  ********************************************/
 def buildScriptForCommits = {
-  if (isMasterRun) {
+  if (isMainRun) {
     // If there is a later build queued up, we want to stop the current build so
     // we can execute the later build instead.
     def q = Jenkins.instance.queue
     abortBuild = false
     q.items.each {
-      if (it.task.name == "pixielabs-master") {
+      if (it.task.name == "pixielabs-main") {
         abortBuild = true
       }
     }
@@ -644,8 +644,8 @@ def buildScriptForCommits = {
         parallel(builders)
       }
 
-      // Only run the cloud deploy build on master run.
-      if (isMasterRun) {
+      // Only run the cloud deploy build on main run.
+      if (isMainRun) {
         stage('Create cloud artifacts') {
           deleteDir()
           WithSourceCode {

ci/bazel_ci.sh

@@ -48,7 +48,7 @@
 # environment variable.
 set -x
 
-COMMIT_RANGE=${COMMIT_RANGE:-$(git merge-base origin/master HEAD)".."}
+COMMIT_RANGE=${COMMIT_RANGE:-$(git merge-base origin/main HEAD)".."}
 TARGET_PATTERN=${TARGET_PATTERN:-"//..."}
 BAZEL_RUN_EXTRA_ARGS=
 BAZEL_QUERY_EXTRA_ARGS=

ci/save_version_info.sh

@@ -13,8 +13,8 @@ else
     echo "0.0.${BUILD_NUMBER}-${JOB_NAME}-dev" > VERSION
 fi
 
-git diff -U0 origin/master > diff_origin_master
-git diff -U0 origin/master -- '***.cc' '***.h' '***.c' > diff_origin_master_cc
+git diff -U0 origin/main > diff_origin_main
+git diff -U0 origin/main -- '***.cc' '***.h' '***.c' > diff_origin_main_cc
 
 git diff -U0 HEAD~10 > diff_head
 git diff -U0 HEAD~10 -- '***.cc' '***.h' '***.c' > diff_head_cc

scripts/load_dev_db.sh

@@ -27,7 +27,7 @@ bazel run -c opt //src/utils/artifacts/versions_gen:versions_gen -- \
 bazel run -c opt //src/utils/artifacts/artifact_db_updater:artifact_db_updater -- \
     --versions_file "${versions_file}" --postgres_db "pl"
 
-git checkout master "$versions_file"
+git checkout main "$versions_file"
 
 # Update database with SSL certs.
 bazel run -c opt //src/cloud/dnsmgr/load_certs:load_certs -- \

scripts/run_clang_tidy.sh

@@ -7,7 +7,7 @@ build=true
 # Print out the usage information and exit.
 usage() {
   echo "Usage $0 [-d] [-h] [-f file_name] [-n]" 1>&2;
-  echo "   -d    Run only diff against master branch"
+  echo "   -d    Run only diff against main branch"
   echo "   -f    Use a diff file"
   echo "   -n    Don't run the build"
   echo "   -h    Print help and exit"
@@ -105,7 +105,7 @@ fi
 # Actually invoke clang-tidy.
 if [ "$diff_mode" = true ] ; then
     if [ -z "$diff_file" ] ; then
-        git diff -U0 origin/master -- src | "${clang_tidy_script}" -p1 2>&1 | tee clang_tidy.log
+        git diff -U0 origin/main -- src | "${clang_tidy_script}" -p1 2>&1 | tee clang_tidy.log
     else
         cat ${diff_file} | "${clang_tidy_script}" -p1 2>&1 | tee clang_tidy.log
     fi