Log all services to memory (#4587)

* Log all services to RAM

* Fix tests workdir

* Rotate logs when they reach 10MB and keep only 1 archive

* Gracefully handle shutdown

* Add note about gracetime not working

* Fix logs permission, create fake logs for devcontainer

* Remove empty line

* Update docker/rootfs/etc/services.d/frigate/run

* Fix fake Frigate shebang

docker/fake_frigate_run

@@ -0,0 +1,8 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+# Start the fake Frigate service
+
+while true; do
+  echo "The fake Frigate service is running..."
+  sleep 5s
+done

docker/rootfs/etc/cont-init.d/prepare-logs.sh

@@ -0,0 +1,11 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+# Prepare the logs folder for s6-log
+
+set -o errexit -o nounset -o pipefail
+
+dirs=(/dev/shm/logs/frigate /dev/shm/logs/go2rtc /dev/shm/logs/nginx)
+
+mkdir -p "${dirs[@]}"
+chown nobody:nogroup "${dirs[@]}"
+chmod 02755 "${dirs[@]}"

docker/rootfs/etc/services.d/frigate/finish

@@ -0,0 +1,16 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+# Take down the S6 supervision tree when the service exits
+
+set -o errexit -o nounset -o pipefail
+
+# Prepare exit code
+if [[ "${1}" -eq 256 ]]; then
+  exit_code="$((128 + ${2}))"
+else
+  exit_code="${1}"
+fi
+
+# Make the container exit with the same exit code as the service
+echo "${exit_code}" > /run/s6-linux-init-container-results/exitcode
+exec /run/s6/basedir/bin/halt

docker/rootfs/etc/services.d/frigate/log/run

@@ -0,0 +1,4 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+exec logutil-service /dev/shm/logs/frigate

docker/rootfs/etc/services.d/frigate/run

@@ -0,0 +1,11 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+# Start the Frigate service
+
+set -o errexit -o nounset -o pipefail
+
+cd /opt/frigate
+
+# Replace the bash process with the Frigate process, redirecting stderr to stdout
+exec 2>&1
+exec python3 -u -m frigate

docker/rootfs/etc/services.d/go2rtc/finish

@@ -1,6 +1,7 @@
 #!/command/with-contenv bash
 # shellcheck shell=bash
-# Take down the S6 supervision tree when the process fails
+# Take down the S6 supervision tree when the service fails, or restart it
+# otherwise
 
 if [[ "${1}" -ne 0 && "${1}" -ne 256 ]]; then
   exec /run/s6/basedir/bin/halt

docker/rootfs/etc/services.d/go2rtc/log/run

@@ -0,0 +1,4 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+exec logutil-service /dev/shm/logs/go2rtc

docker/rootfs/etc/services.d/go2rtc/run

@@ -1,8 +1,8 @@
 #!/command/with-contenv bash
 # shellcheck shell=bash
+# Start the go2rtc service
 
-# https://gist.github.com/mohanpedala/1e2ff5661761d3abd0385e8223e16425?permalink_comment_id=3945021
-set -euo pipefail
+set -o errexit -o nounset -o pipefail
 
 if [[ -f "/config/frigate-go2rtc.yaml" ]]; then
     config_path="/config/frigate-go2rtc.yaml"
@@ -10,4 +10,6 @@ else
     config_path="/usr/local/go2rtc/go2rtc.yaml"
 fi
 
+# Replace the bash process with the go2rtc process, redirecting stderr to stdout
+exec 2>&1
 exec go2rtc -config="${config_path}"

docker/rootfs/etc/services.d/nginx/finish

@@ -1,6 +1,7 @@
 #!/command/with-contenv bash
 # shellcheck shell=bash
-# Take down the S6 supervision tree when the process fails
+# Take down the S6 supervision tree when the service fails, or restart it
+# otherwise
 
 if [[ "${1}" -ne 0 && "${1}" -ne 256 ]]; then
   exec /run/s6/basedir/bin/halt

docker/rootfs/etc/services.d/nginx/log/run

@@ -0,0 +1,4 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+exec logutil-service /dev/shm/logs/nginx

docker/rootfs/etc/services.d/nginx/run

@@ -1,4 +1,7 @@
 #!/command/with-contenv bash
 # shellcheck shell=bash
+# Start the NGINX service
 
+# Replace the bash process with the NGINX process, redirecting stderr to stdout
+exec 2>&1
 exec nginx

docker/rootfs/usr/local/bin/frigate

@@ -0,0 +1,5 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+exec 2>&1
+exec python3 -u -m frigate "${@}"

docker/rootfs/usr/local/nginx/conf/nginx.conf

@@ -2,7 +2,7 @@ daemon off;
 user root;
 worker_processes  1;
 
-error_log  /usr/local/nginx/logs/error.log warn;
+error_log  /dev/stdout warn;
 pid        /var/run/nginx.pid;
 
 events {
@@ -17,7 +17,7 @@ http {
                         '$status $body_bytes_sent "$http_referer" '
                         '"$http_user_agent" "$http_x_forwarded_for"';
 
-    access_log  /usr/local/nginx/logs/access.log  main;
+    access_log  /dev/stdout  main;
 
     sendfile        on;