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key-upload.sh
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key-upload.sh
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#!/bin/sh
set -eu
check_key() {
set +e
echo "Checking for existing signing key..."
key="$(kubectl get secret "$SECRET_NAME" -o jsonpath="{.data['signing\.key']}" 2> /dev/null)"
[ $? -ne 0 ] && return 1
[ -z "$key" ] && return 2
return 0
}
create_key() {
echo "Waiting for new signing key to be generated..."
begin=$(date +%s)
end=$((begin + 300)) # 5 minutes
while true; do
[ -f /synapse/keys/signing.key ] && return 0
[ "$(date +%s)" -gt $end ] && return 1
sleep 5
done
}
store_key() {
# TODO: Better update/replace feature
echo "Storing signing key in Kubernetes secret..."
kubectl apply -f - <<EOF
kind: Secret
apiVersion: v1
metadata:
labels:
app: ${APP_NAME:-matrix-synapse}
name: $SECRET_NAME
data:
signing.key: $(base64 /synapse/keys/signing.key | tr -d '\n')
type: Opaque
EOF
}
if check_key; then
echo "Key already in place, exiting."
exit
fi
if ! create_key; then
echo "Timed out waiting for a signing key to appear."
exit 1
fi
store_key