catch errors from createTimeSeries

[greensopinion]

Avoid crashing NodeJS with an unhandledRejection by catching errors from createTimeSeries.

createTimeSeries can fail with an unhandled promise rejection, which will by default cause the NodeJS process to exit. By handling the error gracefully, the process can continue to run.

Added a corresponding test.

Error: 3 INVALID_ARGUMENT: One or more TimeSeries could not be written: One or more points were written more frequently than the maximum sampling period configured for the metric.: global{} timeSeries[0]: custom.googleapis.com/canary/weather/all{} at Object.callErrorFromStatus (/usr/src/app/node_modules/@grpc/grpc-js/build/src/call.js:31:19) at Object.onReceiveStatus (/usr/src/app/node_modules/@grpc/grpc-js/build/src/client.js:195:52) at Object.onReceiveStatus (/usr/src/app/node_modules/@grpc/grpc-js/build/src/client-interceptors.js:365:141) at Object.onReceiveStatus (/usr/src/app/node_modules/@grpc/grpc-js/build/src/client-interceptors.js:328:181) at /usr/src/app/node_modules/@grpc/grpc-js/build/src/call-stream.js:188:78 at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
for call at
at ServiceClientImpl.makeUnaryRequest (/usr/src/app/node_modules/@grpc/grpc-js/build/src/client.js:163:34)
at ServiceClientImpl.<anonymous> (/usr/src/app/node_modules/@grpc/grpc-js/build/src/make-client.js:105:19)
at /usr/src/app/node_modules/@google-cloud/monitoring/build/src/v3/metric_service_client.js:218:29
at /usr/src/app/node_modules/google-gax/build/src/normalCalls/timeout.js:44:16
at OngoingCallPromise.call (/usr/src/app/node_modules/google-gax/build/src/call.js:67:27)
at NormalApiCaller.call (/usr/src/app/node_modules/google-gax/build/src/normalCalls/normalApiCaller.js:34:19)
at /usr/src/app/node_modules/google-gax/build/src/createApiCall.js:84:30
at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
code: 3,
details: 'One or more TimeSeries could not be written: One or more points were written more frequently than the maximum sampling period configured for the metric.: global{} timeSeries[0]: custom.googleapis.com/canary/weather/all{}',
metadata: Metadata {
internalRepr: Map(3) {
'grpc-server-stats-bin' => [Array],
'google.monitoring.v3.createtimeseriessummary-bin' => [Array],
'grpc-status-details-bin' => [Array]
},
options: {}
}
}

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