From 69a30628b1104e9c774f636cbe0987b6a9e67320 Mon Sep 17 00:00:00 2001
From: Ivaylo Novakov <inovakov@gmail.com>
Date: Tue, 11 May 2021 16:02:48 +0200
Subject: [PATCH] Use a simpler wait_to_start script.

---
 docker-compose.jaeger.yml               | 16 ++++++++++++----
 packages/wait_to_start/wait_to_start.sh | 23 +++++++++++++++++++++++
 2 files changed, 35 insertions(+), 4 deletions(-)
 create mode 100755 packages/wait_to_start/wait_to_start.sh

diff --git a/docker-compose.jaeger.yml b/docker-compose.jaeger.yml
index 3a1c29dc..40392ced 100644
--- a/docker-compose.jaeger.yml
+++ b/docker-compose.jaeger.yml
@@ -33,7 +33,7 @@ services:
 
   jaeger-collector:
     image: jaegertracing/jaeger-collector
-    command: [ "/wait-for-it/wait-for-it.sh", "elasticsearch:9200", "--", "--es.num-shards=1", "--es.num-replicas=0", "--es.server-urls=http://elasticsearch:9200" ]
+    entrypoint: /wait_to_start/wait_to_start.sh
     container_name: jaeger-collector
     restart: on-failure
     expose:
@@ -43,8 +43,12 @@ services:
     environment:
       - SPAN_STORAGE_TYPE=elasticsearch
       - LOG_LEVEL=debug
+      - WAIT_START_CMD=/go/bin/collector-linux --es.num-shards=1 --es.num-replicas=0 --es.server-urls=http://elasticsearch:9200
+      - WAIT_COMMAND=wget -O index.html http://elasticsearch:9200
+      - WAIT_SLEEP=1
+      - WAIT_LOOPS=600
     volumes:
-      - ./packages/wait-for-it:/wait-for-it
+      - ./packages/wait_to_start:/wait_to_start
     networks:
       shared:
         ipv4_address: 10.10.10.91
@@ -53,7 +57,7 @@ services:
 
   jaeger-query:
     image: jaegertracing/jaeger-query
-    command: [ "/wait-for-it/wait-for-it.sh", "elasticsearch:9200", "--", "--es.num-shards=1", "--es.num-replicas=0", "--es.server-urls=http://elasticsearch:9200" ]
+    entrypoint: /wait_to_start/wait_to_start.sh
     container_name: jaeger-query
     restart: on-failure
     ports:
@@ -63,8 +67,12 @@ services:
     environment:
       - SPAN_STORAGE_TYPE=elasticsearch
       - LOG_LEVEL=debug
+      - WAIT_START_CMD=/go/bin/query-linux --es.num-shards=1 --es.num-replicas=0 --es.server-urls=http://elasticsearch:9200
+      - WAIT_COMMAND=wget -O index.html http://elasticsearch:9200
+      - WAIT_SLEEP=1
+      - WAIT_LOOPS=600
     volumes:
-      - ./packages/wait-for-it:/wait-for-it
+      - ./packages/wait_to_start:/wait_to_start
     networks:
       shared:
         ipv4_address: 10.10.10.92
diff --git a/packages/wait_to_start/wait_to_start.sh b/packages/wait_to_start/wait_to_start.sh
new file mode 100755
index 00000000..c56d273f
--- /dev/null
+++ b/packages/wait_to_start/wait_to_start.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+echo $WAIT_COMMAND
+echo $WAIT_START_CMD
+
+is_ready() {
+    eval "$WAIT_COMMAND"
+}
+
+# wait until is ready
+i=0
+while ! is_ready; do
+    i=`expr $i + 1`
+    if [ $i -ge $WAIT_LOOPS ]; then
+        echo "$(date) - still not ready, giving up"
+        exit 1
+    fi
+    echo "$(date) - waiting to be ready"
+    sleep $WAIT_SLEEP
+done
+
+#start the script
+exec $WAIT_START_CMD