fix: Wait for redis cache and queue to start before starting workers

Author: adityahase

deployment/supervisor.conf

@@ -29,7 +29,7 @@ directory=/home/frappe/frappe-bench
 
 
 [program:frappe-bench-frappe-short-worker]
-command=/home/frappe/.pyenv/versions/3.10.0/bin/bench worker-pool --num-workers 16 --queue short,default
+command=bash -c "/home/frappe/frappe-bench/apps/press/deployment/wait-for-redis.sh && /home/frappe/.pyenv/versions/3.10.0/bin/bench worker-pool --num-workers 16 --queue short,default"
 priority=4
 autostart=true
 autorestart=true
@@ -43,7 +43,7 @@ process_name=%(program_name)s
 
 
 [program:frappe-bench-frappe-long-worker]
-command=/home/frappe/.pyenv/versions/3.10.0/bin/bench worker-pool --num-workers 16 --queue default,short,long
+command=bash -c "/home/frappe/frappe-bench/apps/press/deployment/wait-for-redis.sh && /home/frappe/.pyenv/versions/3.10.0/bin/bench worker-pool --num-workers 16 --queue default,short,long"
 priority=4
 autostart=true
 autorestart=true
@@ -57,7 +57,7 @@ process_name=%(program_name)s
 
 
 [program:frappe-bench-frappe-sync-worker]
-command=/home/frappe/.pyenv/versions/3.10.0/bin/bench worker-pool --num-workers 6 --queue sync,long,default,short
+command=bash -c "/home/frappe/frappe-bench/apps/press/deployment/wait-for-redis.sh && /home/frappe/.pyenv/versions/3.10.0/bin/bench worker-pool --num-workers 6 --queue sync,long,default,short"
 priority=4
 autostart=true
 autorestart=true
@@ -74,7 +74,7 @@ process_name=%(program_name)s
 # Build worker, used to run press side of builds
 # i.e tarring and uploading the build context.
 [program:frappe-bench-frappe-build-worker]
-command=/home/frappe/.pyenv/versions/3.10.0/bin/bench worker-pool --num-workers 8 --queue build
+command=bash -c "/home/frappe/frappe-bench/apps/press/deployment/wait-for-redis.sh && /home/frappe/.pyenv/versions/3.10.0/bin/bench worker-pool --num-workers 8 --queue build"
 priority=4
 autostart=true
 autorestart=true

deployment/wait-for-it.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+CACHE_URL="redis://127.0.0.1:13000"
+QUEUE_URL="redis://127.0.0.1:11000"
+
+MAX_ATTEMPTS=120
+attempts=0
+
+until [ $attempts -ge $MAX_ATTEMPTS ]
+do
+    if ( redis-cli -u $QUEUE_URL PING | grep -q PONG ) && ( redis-cli -u $CACHE_URL PING | grep -q PONG ); then
+        break
+    fi
+    sleep 1
+    echo "Waiting for Redis to be ready..."
+    ((attempts=attempts+1))
+done