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Add Logging interceptor #2321

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40 changes: 40 additions & 0 deletions src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -183,6 +183,43 @@
gaxOptions?: CallOptions;
}

const loggingInterceptor = (options, nextCall) => {
return new grpc.InterceptingCall(nextCall(options), {

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start: function (metadata, listener, next) {

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console.log(`[Interceptor LOG] Method: ${options.method_definition.path}`);

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Replace `····console.log(`[Interceptor·LOG]·Method:·${options.method_definition.path}`);` with `console.log(⏎········`[Interceptor·LOG]·Method:·${options.method_definition.path}`,`
console.log('[Interceptor LOG] Outgoing Metadata:', metadata.getMap());

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const newListener = {

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onReceiveMetadata: function (metadata, next) {

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console.log('[Interceptor LOG] Incoming Metadata:', metadata.getMap());

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next(metadata);

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},

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onReceiveMessage: function (message, next) {

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console.log('[Interceptor LOG] Incoming Message (type):', message ? message.constructor.name : null);
next(message);
},
onReceiveStatus: function (status, next) {
console.log('[Interceptor LOG] Status:', status);
next(status);
},
};
next(metadata, newListener);
},
sendMessage: function (message, next) {
console.log('[Interceptor LOG] Outgoing Message (type):', message ? message.constructor.name : null);
next(message);
},
halfClose: function (next) {
console.log('[Interceptor LOG] Half Close');
next();
},
cancel: function (next) {
console.log('[Interceptor LOG] Cancelled');
next();
},
});
};

/**
* Translates enum values to string keys.
*
Expand Down Expand Up @@ -1572,6 +1609,9 @@
extend(true, {}, config.gaxOpts, {
otherArgs: {
headers: config.headers,
options: {
interceptors: [loggingInterceptor],
},
},
}),
);
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