initial

README.md

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-# gce-cloudsql-proxy-action
+# Google Cloud SQL Proxy
+
+Github action which will start a [Google Cloud SQL Proxy](https://cloud.google.com/sql/docs/postgres/sql-proxy) as Docker container. 
+
+## Prerequisites
+
+Set up the following resources manually in the Cloud Console 
+or use a tool like [Terraform](https://www.terraform.io).
+
+* Running Cloud SQL instance with a public IP address
+* Create Service Account with Role `Cloud SQL Client` and export a new JSON key.
+
+
+## Github Action Inputs
+
+| Variable                         | Description                                                                 |
+|----------------------------------|-----------------------------------------------------------------------------|
+| `creds`                          | ***Required*** Service Account JSON Key (not base64 encoded)                |
+| `instance`                       | ***Required*** Cloud SQL connection name                                    |
+| `port`                           | Listen on port, default 5432                                                |
+| `proxy_version`                  | Cloud SQL Proxy version, default 1.18.0                                     |
+
+
+## Example Usage
+
+```
+uses: mattes/gce-cloudsql-proxy-action@v1
+with:
+  creds: ${{ secrets.GOOGLE_APPLICATION_CREDENTIALS }}
+  instance: my-project:us-central1:instance-1
+```
+

action.yml

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+name: "Google Cloud SQL Proxy"
+description: "Start Google Cloud SQL Proxy"
+
+branding:
+  icon: "database"
+  color: "red"
+
+inputs:
+  creds:
+    description: "Contents of a Service Account JSON Key"
+    required: true
+  instance:
+    description: "CloudSQL instance"
+    required: true
+  port:
+    description: "Listen on port"
+    required: false
+    default: 5432
+  proxy_version:
+    description: "CloudSQL Proxy Version"
+    required: false
+    default: 1.18.0
+
+runs:
+  using: "composite"
+  steps:
+    - name: Start Google Cloud SQL Proxy
+      shell: bash
+      run: |
+        # fail if pg_isready is not installed
+        if ! command -v pg_isready &>/dev/null; then
+          echo "pg_isready is not installed"
+          exit 5 
+        fi
+
+        # write google application credentials to a temporary file to be used inside the container
+        mkdir -p /tmp/gce-cloudsql-proxy
+        echo '${{ inputs.creds }}' > /tmp/gce-cloudsql-proxy/key.json
+
+        # start container
+        docker run -d --net host --name gce-cloudsql-proxy --restart on-failure \
+        -v /tmp/gce-cloudsql-proxy:/tmp/gce-cloudsql-proxy \
+        gcr.io/cloudsql-docker/gce-proxy:${{ inputs.proxy_version }} \
+        /cloud_sql_proxy \
+          -credential_file /tmp/gce-cloudsql-proxy/key.json \
+          -dir /tmp \
+          -instances=${{ inputs.instance }}=tcp:127.0.0.1:${{ inputs.port }}
+
+        # wait until connections are accepted
+        sleep 3
+        isready=0
+        for i in {1..10}; do
+          echo "Wait for connections to be ready ... $i/10"
+          (pg_isready --quiet --timeout 3 --host localhost --port ${{ inputs.port }} || exit $?) && true # escape bash's pipefail
+          isready=$?
+          if [[ $isready -eq 0 ]]; then
+            break
+          fi
+          sleep 2
+        done
+
+        # print container logs
+        docker logs gce-cloudsql-proxy
+
+        # exit with error code if we couldn't connect
+        if [[ $isready -ne 0 ]]; then
+          exit $isready 
+        fi
+