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nice-grpc-error-details
Advanced tools
Rich error model implementation for nice-grpc.
This package is experimental and its API should not be considered stable.
Provides extensions to
ServerError
and
ClientError
which carry extra
error details,
as well as server and client middleware to communicate these details via
trailing metadata.
npm install nice-grpc-error-details
Attach the middleware to a server:
import {errorDetailsServerMiddleware} from 'nice-grpc-error-details';
const server = createServer().use(errorDetailsServerMiddleware);
Throw RichServerError
from a service
implementation method:
import {ServerError, Status} from 'nice-grpc';
import {RichServerError, BadRequest} from 'nice-grpc-error-details';
const exampleServiceImpl: ServiceImplementation<
typeof ExampleServiceDefinition
> = {
async exampleUnaryMethod(
request: ExampleRequest,
): Promise<DeepPartial<ExampleResponse>> {
if (!request.someField)
throw new RichServerError(
Status.INVALID_ARGUMENT,
"Missing required field 'some_field'",
[
BadRequest.fromPartial({
fieldViolations: [
{
field: 'some_field',
description: 'Field is required',
},
],
}),
],
);
// ... method logic
},
};
Attach the middleware to a client factory:
import {errorDetailsClientMiddleware} from 'nice-grpc-error-details';
const clientFactory = createClientFactory().use(errorDetailsClientMiddleware);
If an error with details is returned from a server, the client will receive
RichClientError
:
import {Status} from 'nice-grpc';
import {RichClientError, BadRequest} from 'nice-grpc-error-details';
const fieldViolations: BadRequest_FieldViolation[] = [];
try {
await client.exampleUnaryMethod(request);
} catch (error: unknown) {
if (
error instanceof RichClientError &&
error.code === Status.INVALID_ARGUMENT
) {
// loop through error details to find `BadRequest`
for (const detail of error.extra) {
if (detail.$type === BadRequest.$type) {
fieldViolations.push(...detail.fieldViolations);
}
}
} else {
throw error;
}
}
FAQs
gRPC rich error model implementation for nice-grpc
We found that nice-grpc-error-details demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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