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[PATCH 02/11] t/lib-git-daemon: make sure to kill the 'git-daemon' process

From
SZEDER Gábor <szeder.dev@gmail.com>
Date
Mar 13, 2019, 12:24 UTC
Message-ID
<20190313122419.2210-3-szeder.dev@gmail.com>
In-Reply-To
<20190313122419.2210-1-szeder.dev@gmail.com>

After 'start_git_daemon' starts 'git daemon' (note the space in the middle) in the background, it saves the background process' PID, so the daemon can be stopped at the end of the test script. However, 'git-daemon' is not a builtin but a dashed external command, which means that the dashless 'git daemon' executes the dashed 'git-daemon' command, and, consequently, the PID recorded is not the PID of the "real" daemon process, but that of the main 'git' wrapper. Now, if a test script involving 'git daemon' is interrupted by ctrl-C, then only the main 'git' process is stopped, but the real daemon process tends to survive somehow, and keeps on running in the background indefinitely, keeping the daemon's port to itself, and thus preventing subsequent runs of the same test script.

Work this around by running 'git daemon' with the '--pidfile=...' option to save the PID of the real daemon process, and kill that process in 'stop_git_daemon' as well.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
---
 t/lib-git-daemon.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/t/lib-git-daemon.sh b/t/lib-git-daemon.sh
index 79db3b7ae5..6dab8766e7 100644
--- a/t/lib-git-daemon.sh
+++ b/t/lib-git-daemon.sh
@@ -31,6 +31,7 @@ fi
 test_set_port LIB_GIT_DAEMON_PORT
 
 GIT_DAEMON_PID=
+GIT_DAEMON_PIDFILE="$PWD"/daemon.pid
 GIT_DAEMON_DOCUMENT_ROOT_PATH="$PWD"/repo
 GIT_DAEMON_HOST_PORT=127.0.0.1:$LIB_GIT_DAEMON_PORT
 GIT_DAEMON_URL=git://$GIT_DAEMON_HOST_PORT
@@ -49,7 +50,7 @@ start_git_daemon() {
 	mkfifo git_daemon_output
 	${LIB_GIT_DAEMON_COMMAND:-git daemon} \
 		--listen=127.0.0.1 --port="$LIB_GIT_DAEMON_PORT" \
-		--reuseaddr --verbose \
+		--reuseaddr --verbose --pid-file="$GIT_DAEMON_PIDFILE" \
 		--base-path="$GIT_DAEMON_DOCUMENT_ROOT_PATH" \
 		"$@" "$GIT_DAEMON_DOCUMENT_ROOT_PATH" \
 		>&3 2>git_daemon_output &
@@ -88,8 +89,9 @@ stop_git_daemon() {
 	then
 		error "git daemon exited with status: $ret"
 	fi
+	kill "$(cat "$GIT_DAEMON_PIDFILE")" 2>/dev/null
 	GIT_DAEMON_PID=
-	rm -f git_daemon_output
+	rm -f git_daemon_output "$GIT_DAEMON_PIDFILE"
 }
 
 # A stripped-down version of a netcat client, that connects to a "host:port"
-- 
2.21.0.499.g4d310c7a8e.dirty
Previous: SZEDER GáborNext: Junio C Hamano
Message 5 of 21 in “tests: introduce 'test_atexit'”
  1. 00/11 tests: introduce 'test_atexit'SZEDER Gábor, Mar 13, 2019
  2. 01/11 test-lib: fix interrupt handling with 'dash' and '--verbose-log -x'SZEDER Gábor, Mar 13, 2019
  3. Junio C HamanoMar 14, 2019
  4. SZEDER GáborMar 14, 2019
  5. 02/11 t/lib-git-daemon: make sure to kill the 'git-daemon' processSZEDER Gábor, Mar 13, 2019
  6. Junio C HamanoMar 14, 2019
  7. 04/11 git-daemon: use 'test_atexit` to stop 'git-daemon'SZEDER Gábor, Mar 13, 2019
  8. 03/11 test-lib: introduce 'test_atexit'SZEDER Gábor, Mar 13, 2019
  9. Junio C HamanoMar 14, 2019
  10. SZEDER GáborMar 14, 2019
  11. Junio C HamanoMar 18, 2019
  12. 05/11 tests: use 'test_atexit' to stop httpdSZEDER Gábor, Mar 13, 2019
  13. Junio C HamanoMar 14, 2019
  14. Junio C HamanoMar 14, 2019
  15. SZEDER GáborMar 14, 2019
  16. 06/11 t0301-credential-cache: use 'test_atexit' to stop the credentials helperSZEDER Gábor, Mar 13, 2019
  17. 07/11 git p4 test: use 'test_atexit' to kill p4d and the watchdog processSZEDER Gábor, Mar 13, 2019
  18. 10/11 git p4 test: disable '-x' tracing in the p4d watchdog loopSZEDER Gábor, Mar 13, 2019
  19. 09/11 git p4 test: simplify timeout handlingSZEDER Gábor, Mar 13, 2019
  20. 11/11 t9811-git-p4-label-import: fix pipeline negationSZEDER Gábor, Mar 13, 2019
  21. 08/11 git p4 test: clean up the p4d cleanup functionsSZEDER Gábor, Mar 13, 2019

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