A Node.js module providing grpc supports for Google Cloud APIs.
npm install grpc-gcp --saveLet's use Spanner API as an example.
First, Create a json file defining API configuration, with ChannelPoolConfig and MethodConfig.
{
"channelPool": {
"maxSize": 10,
"maxConcurrentStreamsLowWatermark": 1
},
"method": [
{
"name": [ "/google.spanner.v1.Spanner/CreateSession" ],
"affinity": {
"command": "BIND",
"affinityKey": "name"
}
},
{
"name": [ "/google.spanner.v1.Spanner/GetSession" ],
"affinity": {
"command": "BOUND",
"affinityKey": "name"
}
},
{
"name": [ "/google.spanner.v1.Spanner/DeleteSession" ],
"affinity": {
"command": "UNBIND",
"affinityKey": "name"
}
}
]
}Load configuration to ApiConfig.
// @grpc/grpc-js can be used in place of grpc with no changes
var grpc = require('grpc');
var grpcGcp = require('grpc-gcp')(grpc);
var fs = require('fs');
var apiDefinition = JSON.parse(fs.readFileSync('your_api_config_json_file'));
var apiConfig = grpcGcp.createGcpApiConfig(apiDefinition);Pass gcpChannelFactoryOverride and gcpCallInvocationTransformer to channel options when initializing api client.
var channelOptions = {
channelFactoryOverride: grpcGcp.gcpChannelFactoryOverride,
callInvocationTransformer: grpcGcp.gcpCallInvocationTransformer,
gcpApiConfig: apiConfig,
};
var client = new SpannerClient(
'spanner.googleapis.com:443',
channelCreds,
channelOptions
);Download source.
git clone https://github.com/GoogleCloudPlatform/grpc-gcp-node.git && cd grpc-gcp-nodegit submodule update --init --recursiveBuild grpc-gcp.
npm installSetup credentials. See Getting Started With Authentication for more details.
export GOOGLE_APPLICATION_CREDENTIALS=path/to/key.jsonRun unit tests.
npm testRun system tests.
npm run system-test