mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-22 05:31:22 +00:00
297 lines
8 KiB
Bash
Executable file
297 lines
8 KiB
Bash
Executable file
#!/usr/bin/env nix-shell
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#!nix-shell -p awscli -p jq -p qemu -i bash
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# Uploads and registers NixOS images built from the
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# <nixos/release.nix> amazonImage attribute. Images are uploaded and
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# registered via a home region, and then copied to other regions.
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# The home region requires an s3 bucket, and a "vmimport" IAM role
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# with access to the S3 bucket. Configuration of the vmimport role is
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# documented in
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# https://docs.aws.amazon.com/vm-import/latest/userguide/vmimport-image-import.html
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# set -x
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set -euo pipefail
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# configuration
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state_dir=$HOME/amis/ec2-images
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home_region=eu-west-1
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bucket=nixos-amis
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regions=(eu-west-1 eu-west-2 eu-west-3 eu-central-1 eu-north-1
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us-east-1 us-east-2 us-west-1 us-west-2
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ca-central-1
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ap-southeast-1 ap-southeast-2 ap-northeast-1 ap-northeast-2
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ap-south-1 ap-east-1
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sa-east-1)
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log() {
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echo "$@" >&2
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}
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if [ -z "$1" ]; then
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log "Usage: ./upload-amazon-image.sh IMAGE_OUTPUT"
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exit 1
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fi
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# result of the amazon-image from nixos/release.nix
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store_path=$1
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if [ ! -e "$store_path" ]; then
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log "Store path: $store_path does not exist, fetching..."
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nix-store --realise "$store_path"
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fi
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if [ ! -d "$store_path" ]; then
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log "store_path: $store_path is not a directory. aborting"
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exit 1
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fi
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read_image_info() {
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if [ ! -e "$store_path/nix-support/image-info.json" ]; then
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log "Image missing metadata"
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exit 1
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fi
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jq -r "$1" "$store_path/nix-support/image-info.json"
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}
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# We handle a single image per invocation, store all attributes in
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# globals for convenience.
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image_label=$(read_image_info .label)
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image_system=$(read_image_info .system)
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image_file=$(read_image_info .file)
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image_logical_bytes=$(read_image_info .logical_bytes)
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# Derived attributes
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image_logical_gigabytes=$((($image_logical_bytes-1)/1024/1024/1024+1)) # Round to the next GB
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case "$image_system" in
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aarch64-linux)
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amazon_arch=arm64
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;;
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x86_64-linux)
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amazon_arch=x86_64
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;;
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*)
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log "Unknown system: $image_system"
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exit 1
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esac
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image_name="NixOS-${image_label}-${image_system}"
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image_description="NixOS ${image_label} ${image_system}"
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log "Image Details:"
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log " Name: $image_name"
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log " Description: $image_description"
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log " Size (gigabytes): $image_logical_gigabytes"
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log " System: $image_system"
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log " Amazon Arch: $amazon_arch"
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read_state() {
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local state_key=$1
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local type=$2
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cat "$state_dir/$state_key.$type" 2>/dev/null || true
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}
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write_state() {
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local state_key=$1
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local type=$2
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local val=$3
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mkdir -p $state_dir
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echo "$val" > "$state_dir/$state_key.$type"
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}
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wait_for_import() {
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local region=$1
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local task_id=$2
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local state snapshot_id
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log "Waiting for import task $task_id to be completed"
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while true; do
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read state progress snapshot_id < <(
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aws ec2 describe-import-snapshot-tasks --region $region --import-task-ids "$task_id" | \
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jq -r '.ImportSnapshotTasks[].SnapshotTaskDetail | "\(.Status) \(.Progress) \(.SnapshotId)"'
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)
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log " ... state=$state progress=$progress snapshot_id=$snapshot_id"
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case "$state" in
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active)
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sleep 10
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;;
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completed)
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echo "$snapshot_id"
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return
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;;
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*)
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log "Unexpected snapshot import state: '${state}'"
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exit 1
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;;
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esac
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done
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}
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wait_for_image() {
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local region=$1
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local ami_id=$2
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local state
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log "Waiting for image $ami_id to be available"
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while true; do
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read state < <(
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aws ec2 describe-images --image-ids "$ami_id" --region $region | \
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jq -r ".Images[].State"
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)
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log " ... state=$state"
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case "$state" in
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pending)
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sleep 10
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;;
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available)
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return
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;;
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*)
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log "Unexpected AMI state: '${state}'"
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exit 1
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;;
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esac
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done
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}
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make_image_public() {
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local region=$1
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local ami_id=$2
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wait_for_image $region "$ami_id"
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log "Making image $ami_id public"
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aws ec2 modify-image-attribute \
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--image-id "$ami_id" --region "$region" --launch-permission 'Add={Group=all}' >&2
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}
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upload_image() {
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local region=$1
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local aws_path=${image_file#/}
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local state_key="$region.$image_label.$image_system"
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local task_id=$(read_state "$state_key" task_id)
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local snapshot_id=$(read_state "$state_key" snapshot_id)
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local ami_id=$(read_state "$state_key" ami_id)
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if [ -z "$task_id" ]; then
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log "Checking for image on S3"
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if ! aws s3 ls --region "$region" "s3://${bucket}/${aws_path}" >&2; then
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log "Image missing from aws, uploading"
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aws s3 cp --region $region "$image_file" "s3://${bucket}/${aws_path}" >&2
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fi
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log "Importing image from S3 path s3://$bucket/$aws_path"
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task_id=$(aws ec2 import-snapshot --disk-container "{
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\"Description\": \"nixos-image-${image_label}-${image_system}\",
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\"Format\": \"vhd\",
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\"UserBucket\": {
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\"S3Bucket\": \"$bucket\",
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\"S3Key\": \"$aws_path\"
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}
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}" --region $region | jq -r '.ImportTaskId')
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write_state "$state_key" task_id "$task_id"
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fi
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if [ -z "$snapshot_id" ]; then
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snapshot_id=$(wait_for_import "$region" "$task_id")
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write_state "$state_key" snapshot_id "$snapshot_id"
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fi
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if [ -z "$ami_id" ]; then
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log "Registering snapshot $snapshot_id as AMI"
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local block_device_mappings=(
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"DeviceName=/dev/xvda,Ebs={SnapshotId=$snapshot_id,VolumeSize=$image_logical_gigabytes,DeleteOnTermination=true,VolumeType=gp2}"
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)
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local extra_flags=(
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--root-device-name /dev/xvda
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--sriov-net-support simple
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--ena-support
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--virtualization-type hvm
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)
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block_device_mappings+=(DeviceName=/dev/sdb,VirtualName=ephemeral0)
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block_device_mappings+=(DeviceName=/dev/sdc,VirtualName=ephemeral1)
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block_device_mappings+=(DeviceName=/dev/sdd,VirtualName=ephemeral2)
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block_device_mappings+=(DeviceName=/dev/sde,VirtualName=ephemeral3)
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ami_id=$(
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aws ec2 register-image \
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--name "$image_name" \
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--description "$image_description" \
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--region $region \
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--architecture $amazon_arch \
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--block-device-mappings "${block_device_mappings[@]}" \
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"${extra_flags[@]}" \
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| jq -r '.ImageId'
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)
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write_state "$state_key" ami_id "$ami_id"
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fi
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make_image_public $region "$ami_id"
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echo "$ami_id"
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}
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copy_to_region() {
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local region=$1
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local from_region=$2
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local from_ami_id=$3
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state_key="$region.$image_label.$image_system"
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ami_id=$(read_state "$state_key" ami_id)
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if [ -z "$ami_id" ]; then
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log "Copying $from_ami_id to $region"
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ami_id=$(
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aws ec2 copy-image \
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--region "$region" \
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--source-region "$from_region" \
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--source-image-id "$from_ami_id" \
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--name "$image_name" \
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--description "$image_description" \
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| jq -r '.ImageId'
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)
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write_state "$state_key" ami_id "$ami_id"
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fi
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make_image_public $region "$ami_id"
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echo "$ami_id"
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}
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upload_all() {
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home_image_id=$(upload_image "$home_region")
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jq -n \
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--arg key "$home_region.$image_system" \
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--arg value "$home_image_id" \
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'$ARGS.named'
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for region in "${regions[@]}"; do
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if [ "$region" = "$home_region" ]; then
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continue
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fi
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copied_image_id=$(copy_to_region "$region" "$home_region" "$home_image_id")
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jq -n \
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--arg key "$region.$image_system" \
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--arg value "$copied_image_id" \
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'$ARGS.named'
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done
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}
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upload_all | jq --slurp from_entries
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