build: watch for sauce service failures when waiting for it to start (#36109)

Also add two targets to make it more convienent to tail & dump the sauce service logs: //tools/saucelabs:sauce_service_tail & //tools/saucelabs:sauce_service_log

PR Close #36109

tools/saucelabs/BUILD.bazel

@@ -37,6 +37,20 @@ sh_binary(
     data = ["@npm//sauce-connect"],
 )
 
+sh_binary(
+    name = "sauce_service_tail",
+    srcs = ["sauce-service.sh"],
+    args = ["tail"],
+    data = ["@npm//sauce-connect"],
+)
+
+sh_binary(
+    name = "sauce_service_log",
+    srcs = ["sauce-service.sh"],
+    args = ["log"],
+    data = ["@npm//sauce-connect"],
+)
+
 nodejs_binary(
     name = "karma-saucelabs",
     data = [

tools/saucelabs/README.md

@@ -27,11 +27,19 @@ yarn bazel run //tools/saucelabs:sauce_service_setup
 For example, `packages/core/test:test_web` becomes `packages/core/test:saucelabs_test_web`.
 
 ```
-yarn bazel test //path/to/target:saucelabs_target1 --config=saucelabs --config=ivy
+yarn bazel test //packages/core/test:saucelabs_test_web --config=saucelabs --config=ivy
 ```
 
 Remove the `--config=ivy` if you want to run through View Engine instead. 
 
+5. Sauce service log may be tailed or dumped with the following targets:
+
+``` bash
+yarn bazel run //tools/saucelabs:sauce_service_tail
+yarn bazel run //tools/saucelabs:sauce_service_log
+```
+
+
 ## Additional test features
 
 To see the test output while the tests are running (as these are long tests), add the `--test_output=streamed` option. 

tools/saucelabs/sauce-service.sh

@@ -191,16 +191,32 @@ service-pre-start() {
 
 # Called after service is started
 service-post-start() {
-  @wait_for "Waiting for Sauce Connect Proxy process" "${SAUCE_PID_FILE}"
+  if [[ ! -f "${SAUCE_PID_FILE}" ]]; then
+    printf "# Waiting for Sauce Connect Proxy process (${SAUCE_PID_FILE})"
+    while [[ ! -f "${SAUCE_PID_FILE}" ]]; do
+      if ! @serviceStatus >/dev/null 2>&1; then
+        printf "\n"
+        @serviceStop
+        @echo "Service failed to start!"
+        service-failed-setup
+        exit 1
+      fi
+      printf "."
+      sleep 0.5
+    done
+    printf "\n"
+  fi
   @echo "Sauce Connect Proxy started (pid $(cat "${SAUCE_PID_FILE}"))"
 }
 
 # Called if service fails to start
 service-failed-setup() {
   if [[ -f "${SERVICE_LOG_FILE}" ]]; then
-    echo "================================================================================"
+    @echo "tail ${SERVICE_LOG_FILE}:"
-    echo "${SERVICE_LOG_FILE}:"
+    echo "--------------------------------------------------------------------------------"
-    echo $(cat "${SERVICE_LOG_FILE}")
+    tail "${SERVICE_LOG_FILE}"
+    echo "--------------------------------------------------------------------------------"
+    echo "^^^^^ ${SERVICE_LOG_FILE} ^^^^^"
   fi
 }
 
@@ -359,6 +375,8 @@ service-post-stop() {
     return 0
   else
     @warn "Service is not running"
+    @remove "${SERVICE_PID_FILE}"
+    @remove "${SERVICE_START_FILE}"
     service-post-stop
   fi
 }
@@ -378,9 +396,18 @@ service-post-stop() {
 }
 
 @serviceTail() {
+  @echo "tail ${SERVICE_LOG_FILE}:"
   tail -f "${SERVICE_LOG_FILE}"
 }
 
+@serviceLog() {
+  @echo "cat ${SERVICE_LOG_FILE}:"
+  echo "--------------------------------------------------------------------------------"
+  cat "${SERVICE_LOG_FILE}"
+  echo "--------------------------------------------------------------------------------"
+  echo "^^^^^ ${SERVICE_LOG_FILE} ^^^^^"
+}
+
 case "${1:-}" in
   setup)
     @serviceLock
@@ -419,6 +446,9 @@ case "${1:-}" in
       ${SERVICE_COMMAND}
     )
     ;;
+  log)
+    @serviceLog
+    ;;
   tail)
     @serviceTail
     ;;