Chore/local pkgsite

src/local-pkgsite/devcontainer-feature.json

@@ -1,7 +1,7 @@
 {
     "name": "Local Go Pkgsite",
     "id": "local-pkgsite",
-    "version": "0.1.4",
+    "version": "0.1.5",
     "description": "A local Go pkgsite serving the module documentation, with automatic browser refresh.",
     "options": {
         "port": {

src/local-pkgsite/install.sh

@@ -154,25 +154,47 @@ INT_PORT=$(comm -23 <(seq $(cat /proc/sys/net/ipv4/ip_local_port_range | tr ' '
     <(netstat -ntl | awk '/LISTEN/ {split($4,a,":"); print a[2]}' | sort -u) 2>/dev/null \
     | shuf | head -n 1)
 
+wait_for_process_logfile() {
+    local name=\$1
+    local file=\$2
+    local now=\$(date +%s)
+    local end=\$((now + 5))
+    while true; do
+        if [ -s "\${file}" ]; then
+            echo "...\${name} started"
+            break
+        fi
+        now=\$(date +%s)
+        if [ "\${now}" -ge "\${end}" ]; then
+            echo "ERROR: \${name} did not start"
+            break
+        fi
+        sleep 0.25
+    done
+}
+
 # Start browser-sync in the background to proxy from the local pkgsite on a
 # random/ephemeral HTTP port that the determined above to the "public" port
 # where browser want to connect to.
-nohup bash -c "\
+BROWSYNC_LOGFILE=/tmp/nohup-local-pkgsite-browser-sync.log
+setsid --fork bash -c "\
     browser-sync start \
         --port ${PORT} \
         --proxy localhost:\${INT_PORT} \
         --reload-delay ${RELOAD_DELAY} \
         --reload-debounce ${RELOAD_DEBOUNCE} \
         --no-ui \
         --no-open \
-    " >/tmp/nohup-local-pkgsite-browser-sync.log 2>&1 &
+    >\${BROWSYNC_LOGFILE} 2>&1"
+wait_for_process_logfile "browser-sync" \${BROWSYNC_LOGFILE}
 
 # Monitor for any *.go or (heaven forbid) our go.mod to change, then first
 # terminate the already running local pkgsite and restart it; as before, serve
 # the local pkgsite on a random/ephemeral HTTP port that the determined above.
 # Then trigger a reload in connected browsers. Please note that we run nodemon
-# and it will then run "browser-sync reload" on demand, as well as ).
-nohup bash -c "\
+# and it will then run "browser-sync reload" on demand, as well as pkgsite).
+NODEM_LOGFILE=/tmp/nohup-local-pkgsite-nodemon.log
+setsid --fork bash -c "\
     nodemon \
         --signal SIGTERM \
         --watch './**/*' \
@@ -182,7 +204,8 @@ nohup bash -c "\
             browser-sync --port ${PORT} reload \
             && ${PKGSITE_BIN} -http=localhost:\${INT_PORT} .
             \" \
-    &" >/tmp/nohup-local-pkgsite-nodemon.log 2>&1
+    >\${NODEM_LOGFILE} 2>&1"
+wait_for_process_logfile "nodemon" \${NODEM_LOGFILE}
 EOF
 chmod 0755 "${PKGSITE_SERVE_PATH}"
 

test/local-pkgsite/scenarios.json

@@ -11,7 +11,8 @@
         "image": "ghcr.io/almalinux/almalinux:9",
         "features": {
             "local-pkgsite": {}
-        }
+        },
+        "postCreateCommand": "yum install -y procps"
     },
     "debian": {
         "image": "mcr.microsoft.com/devcontainers/base:debian-12",
@@ -25,6 +26,7 @@
         "image": "fedora",
         "features": {
             "local-pkgsite": {}
-        }
+        },
+        "postCreateCommand": "yum install -y procps"
     }
-}
+}   

test/local-pkgsite/test.sh

@@ -15,6 +15,11 @@ cat /tmp/nohup-local-pkgsite-browser-sync.log
 check "nodemon nohup log exists" bash -c "[ -f /tmp/nohup-local-pkgsite-nodemon.log ]"
 cat /tmp/nohup-local-pkgsite-nodemon.log
 
+echo
+ps -o pid,comm,command --forest -e
+check "browser-sync process still exists" bash -c "ps -o pid,command --forest -e | grep -v grep | grep -E '/browser-sync start --port'"
+check "nodemon process still exists" bash -c "ps -o pid,command --forest -e | grep -v grep | grep -E '/nodemon --signal SIGTERM'"
+
 CMD=$(cat <<EOF
 curl --output /dev/null \
     --retry-connrefused --retry-delay 1 --retry 5 \