mirror of
https://github.com/titanscouting/tra-analysis.git
synced 2024-11-13 22:56:18 +00:00
52 lines
1.9 KiB
Markdown
52 lines
1.9 KiB
Markdown
# gRPC Protobuf Loader
|
|
|
|
A utility package for loading `.proto` files for use with gRPC, using the latest Protobuf.js package.
|
|
|
|
## Installation
|
|
|
|
```sh
|
|
npm install @grpc/proto-loader
|
|
```
|
|
|
|
## Usage
|
|
|
|
```js
|
|
const protoLoader = require('@grpc/proto-loader');
|
|
const grpcLibrary = require('grpc');
|
|
// OR
|
|
const grpcLibrary = require('@grpc/grpc-js');
|
|
|
|
protoLoader.load(protoFileName, options).then(packageDefinition => {
|
|
const packageObject = grpcLibrary.loadPackageDefinition(packageDefinition);
|
|
});
|
|
// OR
|
|
const packageDefinition = protoLoader.loadSync(protoFileName, options);
|
|
const packageObject = grpcLibrary.loadPackageDefinition(packageDefinition);
|
|
```
|
|
|
|
The options parameter is an object that can have the following optional properties:
|
|
|
|
| Field name | Valid values | Description
|
|
|------------|--------------|------------
|
|
| `keepCase` | `true` or `false` | Preserve field names. The default is to change them to camel case.
|
|
| `longs` | `String` or `Number` | The type to use to represent `long` values. Defaults to a `Long` object type.
|
|
| `enums` | `String` | The type to use to represent `enum` values. Defaults to the numeric value.
|
|
| `bytes` | `Array` or `String` | The type to use to represent `bytes` values. Defaults to `Buffer`.
|
|
| `defaults` | `true` or `false` | Set default values on output objects. Defaults to `false`.
|
|
| `arrays` | `true` or `false` | Set empty arrays for missing array values even if `defaults` is `false` Defaults to `false`.
|
|
| `objects` | `true` or `false` | Set empty objects for missing object values even if `defaults` is `false` Defaults to `false`.
|
|
| `oneofs` | `true` or `false` | Set virtual oneof properties to the present field's name. Defaults to `false`.
|
|
| `includeDirs` | An array of strings | A list of search paths for imported `.proto` files.
|
|
|
|
The following options object closely approximates the existing behavior of `grpc.load`:
|
|
|
|
```js
|
|
const options = {
|
|
keepCase: true,
|
|
longs: String,
|
|
enums: String,
|
|
defaults: true,
|
|
oneofs: true
|
|
}
|
|
```
|