* Add metrics collector hooks in the right places

* Move readrows tests over

* Group ReadRows under separate describe block

* Add mutateRows tests

* Add onResponse to mutateRows collection

* Eliminate the extra mutateRows calls

* Change the test frame to work without inserting

* Remove console traces

* Remove the error console log

* Inserts will conflate results for readRows too

* Remove only

* Remove only

* Remove the extra onResponse call

* Include onOperationComplete in the callback

* Remove the onOperationComplete call

* Get rid of error code fragment

* onResponse handler moved into metrics collector

* Rename handleStatusAndMetadata

* Add comments, shorten snippet

* Add the wrapRequest method to the mock

* Pass null along instead

* Add retries comment

* Use the same setup table code as before

* Rename method to setupBigtableWithInsert

* Keep setupBigtable name as setupBigtable

* Eliminate unused import

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* Run the linter

* Make sure the table is set up properly, but don’t

add a mutateRow call for the handlers tests

* Remove only

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

…1647)

## Description

This PR makes it so that all readRows calls will start recording application latencies. With this change, data for application latencies will now be available on the Google Cloud dashboard.

## Impact

Data should now be available for application latencies on ReadRows calls in the client side metrics dashboard.

## Testing

Tests are added that mock out the hrtime module and make sure the right application latencies values are recorded.

…e row mutates (#1650)

* Remove unused import

* Move mutateInternal into an internal method

* Eliminate unused dependencies

* Adjust mocks so tests pass

* Fix mocks to mock out mutate internal

* Add mutateRow test suite 1

* Add handler tests for MutateRow

* Add header

…ls (#1658)

## Description

This fix ensures that first response latencies are only collected for ReadRows calls and not for the other grpc methods. This matches the requirements described in https://cloud.google.com/bigtable/docs/client-side-metrics-descriptions#first-response-latencies.

## Impact

Ensures that the right client side metrics are getting collected for the right methods.

## Testing

- More tolerance has been added to application latencies
- We change the test to expect first response latencies for readRows calls and not expect them otherwise

## Description

This PR collects client side metrics for readModifyWriteRow calls and collects all the right types of metrics for these unary calls. They leverage the plumbing provided for unary calls to add interceptors to those calls so that we can record metrics for the right zone/cluster/server time.

## Impact

This PR collects client side metrics for readModifyWriteRow calls.

## Testing

For each readRows/mutateRows/mutateRow test we add a corresponding test for readModifyWriteRow.

…de metrics system tests (#1662)

* Move constant scope out

eliminate magic string matching

* Random ids for instances

* Ensure proper setup and cleanup for second project

* Remove only handlers

## Description

This PR makes it so that when sampleRowKeys calls are made that metrics will be collected for those calls and available to view in the Google Cloud Monitoring dashboard.

## Impact

Now we collect client side metrics for sample row keys so that users can gain insights about what happens when a sampleRowKeys call gets made.

## Testing

For all client side metrics tests that exist for ReadRows/MutateRows calls, a test will be added for sample row keys calls.

## Description

This PR collects client side metrics for checkAndMutateRow calls and collects all the right types of metrics for these unary calls. They leverage the plumbing provided for unary calls to add interceptors to those calls so that we can record metrics for the right zone/cluster/server time.

## Impact

This PR collects client side metrics for checkAndMutateRow calls.

## Testing

For each readRows/mutateRows/mutateRow test we add a corresponding test for checkAndMutateRow.

🤖 I have created a release *beep* *boop*
---


## [6.3.0](https://togithub.com/googleapis/nodejs-bigtable/compare/v6.2.0...v6.3.0) (2025-08-11)


### Features

* Add client side metrics for checkAndMutateRow calls ([#1661](https://togithub.com/googleapis/nodejs-bigtable/issues/1661)) ([c258ea1](https://togithub.com/googleapis/nodejs-bigtable/commit/c258ea1b29203aad3eaaf9cfe64ddabb8c1018bf))
* Add client side metrics for readModifyWriteRow calls ([#1656](https://togithub.com/googleapis/nodejs-bigtable/issues/1656)) ([2129312](https://togithub.com/googleapis/nodejs-bigtable/commit/2129312401bf9f5b8e51b13ac576cb765de401df))
* Client side metrics support for mutateRows ([#1638](https://togithub.com/googleapis/nodejs-bigtable/issues/1638)) ([7601e4d](https://togithub.com/googleapis/nodejs-bigtable/commit/7601e4da115ff6a5da411cc857917b579c70ced7))
* Collect client side metrics for sampleRowKeys calls ([#1660](https://togithub.com/googleapis/nodejs-bigtable/issues/1660)) ([6ed98fa](https://togithub.com/googleapis/nodejs-bigtable/commit/6ed98faefe446e67f83fd5394aae30374fd3ec3a))
* For client side metrics, record metrics as MUTATE_ROW for single row mutates ([#1650](https://togithub.com/googleapis/nodejs-bigtable/issues/1650)) ([f190a8c](https://togithub.com/googleapis/nodejs-bigtable/commit/f190a8c322498ddfbe73406759a43a268c16bdc4))
* Record ReadRows application latencies for client side metrics ([#1647](https://togithub.com/googleapis/nodejs-bigtable/issues/1647)) ([8af801b](https://togithub.com/googleapis/nodejs-bigtable/commit/8af801b3ecd7ff5e30e6c8cc67bd4123bdf34ee9))


### Bug Fixes

* FirstResponseLatencies should only be collected for readRows calls ([#1658](https://togithub.com/googleapis/nodejs-bigtable/issues/1658)) ([99cf5a6](https://togithub.com/googleapis/nodejs-bigtable/commit/99cf5a6010249ed0eedd88f23b2d32cacb106c07))

---
This PR was generated with [Release Please](https://togithub.com/googleapis/release-please). See [documentation](https://togithub.com/googleapis/release-please#release-please).