firestore-sample

Firestore Sample Application with Native Image

This application uses the Google Cloud Firestore client libraries and is compatible with Native Image compilation.

This sample runs through basic operations of creating a new document, running queries, and then deleting the created resources.

Setup Instructions

1. Follow the GCP Project and Native Image Setup Instructions.

2. If you wish to run the application against the Firestore emulator, make sure that you have the Google Cloud SDK installed.

   In a new terminal window, start the emulator via gcloud:

   gcloud beta emulators firestore start --host-port=localhost:9010
   

   Leave the emulator running in this terminal for now. In the next section, we will run the sample application against the Firestore emulator instsance.

Run with Native Image Compilation

1. Navigate to this directory and compile the application with the Native Image compiler.

   mvn package -P native
   

2. (Optional) If you're using the emulator, export the FIRESTORE_EMULATOR_HOST as an environment variable in your terminal.

   export FIRESTORE_EMULATOR_HOST=localhost:9010
   

   The Firestore Client Libraries will detect this environment variable and automatically connect to the emulator instance if this variable is set.

3. Run the application.

   ./target/firestore-sample
   

4. The application will run through some basic Firestore operations and log some output statements.

   Created user alovelace. Timestamp: 2020-12-15T20:19:28.444070000Z
   The following users were saved:
   Document: alovelace | Ada Lovelace born 1815
   Number of users born before 1900: 1
   Number of users born earlier after 1900: 0
   Number of users whose first name is 'Ada': 0