add(upload_ami_txt): Upload text file that contains the AMI id.

oem/ami/upload_ami_txt.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+#
+# Set pipefail along with -e in hopes that we catch more errors
+set -e -o pipefail
+
+USAGE="Usage: $0 -a ami-id
+    -V VERSION  Find AMI by CoreOS version. (required)
+    -K KEY      Path to Amazon API private key.
+    -C CERT     Path to Amazon API key certificate.
+    -h          this ;-)
+    -v          Verbose, see all the things!
+
+This script must be run from an ec2 host with the ec2 tools installed.
+"
+
+IMAGE="coreos_production_ami"
+URL_FMT="gs://storage.core-os.net/coreos/amd64-generic/%s/${IMAGE}_%s.txt"
+AMI=
+VER=
+
+while getopts "a:V:K:C:hv" OPTION
+do
+    case $OPTION in
+        V) VER="$OPTARG";;
+        K) export EC2_PRIVATE_KEY="$OPTARG";;
+        C) export EC2_CERT="$OPTARG";;
+        h) echo "$USAGE"; exit;;
+        v) set -x;;
+        *) exit 1;;
+    esac
+done
+
+if [[ $(id -u) -eq 0 ]]; then
+    echo "$0: This command should not be ran run as root!" >&2
+    exit 1
+fi
+
+if [[ -n "$VER" ]]; then
+    AMI=$(ec2-describe-images -F name="CoreOS-$VER" | grep -m1 ^IMAGE \
+        | cut -f2) || true # Don't die silently, error messages are good
+    if [[ -z "$AMI" ]]; then
+        echo "$0: Cannot find an AMI for CoreOS $VER" >&2
+        exit 1
+    fi
+else
+    echo "$0: AMI version required via -V" >&2
+    echo "$USAGE" >&2
+    exit 1
+fi
+
+zoneurl=http://instance-data/latest/meta-data/placement/availability-zone
+zone=$(curl --fail -s $zoneurl)
+region=$(echo $zone | sed 's/.$//')
+url=$(printf "$URL_FMT" "$VER" "$region")
+
+tmp=$(mktemp --suffix=.txt)
+trap "rm -f '$tmp'" EXIT
+echo "$AMI" > "$tmp"
+gsutil cp "$tmp" "$url"
+echo "OK"