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{ targetRoot, wgetExtraOptions }:
# OpenStack's metadata service aims to be EC2-compatible. Where
# possible, try to keep the set of fetched metadata in sync with
# ./ec2-metadata-fetcher.nix .
''
metaDir=${targetRoot}etc/ec2-metadata
mkdir -m 0755 -p "$metaDir"
rm -f "$metaDir/*"
echo "getting instance metadata..."
wget_imds() {
wget ${wgetExtraOptions} "$@"
}
wget_imds -O "$metaDir/ami-manifest-path" http://169.254.169.254/1.0/meta-data/ami-manifest-path || true
# When no user-data is provided, the OpenStack metadata server doesn't expose the user-data route.
(umask 077 && wget_imds -O "$metaDir/user-data" http://169.254.169.254/1.0/user-data || rm -f "$metaDir/user-data")
wget_imds -O "$metaDir/hostname" http://169.254.169.254/1.0/meta-data/hostname || true
wget_imds -O "$metaDir/public-keys-0-openssh-key" http://169.254.169.254/1.0/meta-data/public-keys/0/openssh-key || true
''
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