gcloud.wasm

Google Cloud APIs as WebAssembly Components (WASI Preview 2).

Components

auth

Google Cloud authentication component. Exports gcloud:auth/token-source interface.

Supports Application Default Credentials (ADC) with authorized_user refresh token flow.

cd auth
make build

storage

Google Cloud Storage component. Exports gcloud:storage/buckets interface.

cd storage
make build

secretmanager

Google Cloud Secret Manager component. Exports gcloud:secretmanager/secrets interface.

cd secretmanager
make build

Examples

Prerequisites

• Rust (wasm32-wasip2 target)
• wkg (WIT dependency management)
• wac (component composition)
• wasmtime

examples/auth

Demonstrates using the gcloud:auth/token-source interface to obtain an access token.

cd examples/auth
make build
make run

examples/storage

Demonstrates using the gcloud:storage/buckets interface to list buckets.

cd examples/storage
make build
GOOGLE_CLOUD_PROJECT=your-project make run

examples/secretmanager

Demonstrates using the gcloud:secretmanager/secrets interface to access a secret.

cd examples/secretmanager
make build
SECRET_NAME=projects/your-project/secrets/your-secret/versions/latest make run

How it works

1. cargo build --target wasm32-wasip2 builds each component/example as a WASM component
2. wac compose composes components using a declarative compose.wac file to satisfy imports
3. wasmtime run executes the composed component