Merge pull request #950 from metacpan/oalders/wait-for-es

Add wait-for-es script

Author: ssoriche

.env

@@ -1,2 +1,2 @@
-PGDB=db:5432
+PGDB=pgdb:5432
 API_SERVER=morbo -l http://*:5000 -w app.psgi -w bin -w lib -w templates --verbose

wait-for-es.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Courtesy of @fxdgear
+# https://github.com/elastic/elasticsearch-py/issues/778#issuecomment-384389668
+
+set -e
+
+host="$1"
+shift
+cmd="$@"
+
+
+until $(curl --output /dev/null --silent --head --fail "$host"); do
+    printf '.'
+    sleep 1
+done
+
+# First wait for ES to start...
+response=$(curl $host)
+
+until [ "$response" = "200" ]; do
+    response=$(curl --write-out %{http_code} --silent --output /dev/null "$host")
+    >&2 echo "Elastic Search is unavailable - sleeping"
+    sleep 1
+done
+
+
+# Wait for ES status to turn to yellow.
+# TODO: Ideally we'd be waiting for green, but we need multiple nodes for that.
+
+health="$(curl -fsSL "$host/_cat/health?h=status")"
+health="$(echo "$health" | sed -r 's/^[[:space:]]+|[[:space:]]+$//g')" # trim whitespace (otherwise we'll have "green ")
+
+until [ "$health" = 'yellow' ]; do
+    health="$(curl -fsSL "$host/_cat/health?h=status")"
+    health="$(echo "$health" | sed -r 's/^[[:space:]]+|[[:space:]]+$//g')" # trim whitespace (otherwise we'll have "green ")
+    >&2 echo "Elastic Search is unavailable ($health) - sleeping"
+    sleep 1
+done
+
+>&2 echo "Elastic Search is up"
+exec $cmd