From ed9a3000f9c84aa38c78223d99518d2ab74db9cc Mon Sep 17 00:00:00 2001
From: Michael Prokop <mprokop@sipwise.com>
Date: Sun, 30 Mar 2014 01:10:16 +0100
Subject: [PATCH] Block volume creation until the AMI is available

Otherwise we might stop/terminate the instance ID before AMI creation
finished.
---
 ec2-create-ce | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/ec2-create-ce b/ec2-create-ce
index 6d46b0d..6d3efb1 100755
--- a/ec2-create-ce
+++ b/ec2-create-ce
@@ -251,6 +251,20 @@ ec2-create-image --region "$AWS_REGION" \
 
 AMI_ID="$(awk '/^IMAGE/ {print $2}' $LOGFILE_AMI)"
 
+retry=120 # up to 10 minutes
+STATUS=""
+while [ "$STATUS" != "available" ] && [ $retry -ne 0 ] ; do
+  STATUS="$(ec2-describe-images --region ${AWS_REGION} "$AMI_ID" | awk '/^IMAGE/ {print $5}')"
+  echo "AMI ID $AMI_ID not yet finished (status: ${STATUS}), checking again in 5 seconds ($retry retries left)."
+  sleep 5
+  retry=$(($retry - 1))
+done
+
+if [ "$STATUS" != "available" ] ; then
+  echo "No further retries left and couldn't finish creation of AMI ID ${AMI_ID} for instance ID ${INSTANCE_ID}, giving up." >&2
+  exit 1
+fi
+
 if [ -n "$AMI_ID" ] ; then
   echo "Successfully created AMI with ID $AMI_ID"
 else