github-metrics-aggregator

README

GitHub Metrics Aggregator

HTTP server to ingest GitHub webhook event payloads. This service will post all requests to a PubSub topic for ingestion and aggregation into BigQuery.

Testing

Creating GitHub HMAC Signature

echo -n `cat testdata/issues.json` | openssl sha256 -hmac "test-secret"

# Output:
08a88fe31f89ab81a944e51e51f55ebf9733cb958dd83276040fd496e5be396a

Use this value in the X-Hub-Signature-256 request header as follows:

X-Hub-Signature-256: sha256=08a88fe31f89ab81a944e51e51f55ebf9733cb958dd83276040fd496e5be396a

Example Request

PAYLOAD=$(echo -n `cat testdata/issues.json`)
WEBHOOK_SECRET="test-secret"

curl \
  -H "Content-Type: application/json" \
  -H "X-Github-Delivery: $(uuidgen)" \
  -H "X-Github-Event: issues" \
  -H "X-Hub-Signature-256: sha256=$(echo -n $PAYLOAD | openssl sha256 -hmac $WEBHOOK_SECRET)" \
  -d $PAYLOAD \
  http://localhost:8080/webhook

# Output
Ok