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Pubsub feature: get messages count waiting in subscription #527

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pierre-b opened this issue May 4, 2015 · 14 comments
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Pubsub feature: get messages count waiting in subscription #527

pierre-b opened this issue May 4, 2015 · 14 comments
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api: pubsub Issues related to the Pub/Sub API.

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@pierre-b
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pierre-b commented May 4, 2015

Hi,

I need to know how many messages are waiting in the subscription, to pop new workers or monitor the health of my system. This is something AWS SQS does too.

Is it in the roadmap actually ?

Thank you
@pierre-b
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pierre-b commented May 5, 2015

FYI: as https://code.google.com/p/cloud-pubsub/issues/detail?id=13 told me, there is a "num_undelivered_messages" endpoint to get that metric.

@ryanseys
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ryanseys commented May 5, 2015

Considering it's "not accurate" I wouldn't use it yet and don't think we should support it in this library until we know it is accurate.

@stephenplusplus stephenplusplus added the api: pubsub Issues related to the Pub/Sub API. label May 5, 2015
@pierre-b
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pierre-b commented May 5, 2015

This feature could never be accurate because messages are always flowing into the subscription (depending on the publish rate), but it's crucial to know if you need to add more workers to process messages or monitor the health of your workers.

@stephenplusplus
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From https://cloud.google.com/monitoring/api/metrics, they list two interesting ones:

num_outstanding_messages: Current number of messages delivered but not yet acknowledged.
num_undelivered_messages: Current number of messages pending to be delivered.

Maybe we could open up a generic subscription.getMetrics('num_outstanding_msesages') and anything else from the list: topic.getMetrics('message_sizes'), as these may all be useful.

@stephenplusplus
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Assigned this to @callmehiphop since you had some ideas for how to implement this generically.

@stephenplusplus stephenplusplus mentioned this issue Nov 3, 2015
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@leibale
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leibale commented Dec 10, 2015

what about this one?

@stephenplusplus
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We have a few more things to implement with a higher priority before getting to this one, mostly support for the Prediction and Translate APIs, then promises.

@leibale
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leibale commented Dec 12, 2015

@stephenplusplus if i will create a pull request, you will merge?

@stephenplusplus
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That would be great!

@landrito landrito added priority: p2 Moderately-important priority. Fix may not be included in next release. Status: Acknowledged labels Mar 7, 2017
@sahas-
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sahas- commented Mar 31, 2017

Great to see you guys working on this already. If its worth, right now I use stackdriver's subscription metrics capabilities to get this information, apparently, stackdriver lags behind and the count is not accurate. Just wanted to add +1 to this request and happy to be a beta tester, if need be. Let me know.

@mpcm
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mpcm commented Apr 6, 2017 •
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Adding link to the current related google doc page, for others like me that ended up here looking to learn about msg depth in a sub: https://cloud.google.com/pubsub/docs/ordering#order_of_processed_messages_matters

@Danack Danack mentioned this issue Aug 16, 2017
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@stephenplusplus
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@callmehiphop given the large Pub/Sub rewrite that happened since this issue was opened, is this request still relevant / do you have an idea for a reliable implementation?

@callmehiphop
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@stephenplusplus AFAIK the re-write hasn't changed anything in regard to collecting these metrics.

@stephenplusplus stephenplusplus mentioned this issue Dec 13, 2017
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@stephenplusplus
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This issue was moved to googleapis/nodejs-pubsub#8

@stephenplusplus stephenplusplus removed priority: p2 Moderately-important priority. Fix may not be included in next release. type: enhancement labels Dec 13, 2017
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@sofisl @gcf-owl-bot
build!: update library to use Node 12 (#527)
619504d 
* build!: Update library to use Node 12

* 🦉 Updates from OwlBot post-processor

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

* dep: update gts

* dep: update google-gax

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
sofisl pushed a commit that referenced this issue Sep 27, 2022
@SurferJeffAtGoogle
chore: migrate to owl bot (#527)
0649123 
* chore: migrate to owl bot

* chore: copy files from googleapis-gen fb91803ccef5d7c695139b22788b309e2197856b

* chore: run the post processor
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docs(samples): include metadata file, add exclusions for samples to h…
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…andwritten libraries (#527)

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docs(samples): include metadata file, add exclusions for samples to h…
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…andwritten libraries (#527)

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sofisl pushed a commit that referenced this issue Nov 9, 2022
@SurferJeffAtGoogle
chore: migrate to owl bot (#527)
1e6ed45 
* chore: migrate to owl bot

* chore: copy files from googleapis-gen fb91803ccef5d7c695139b22788b309e2197856b

* chore: run the post processor
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build: use codecov's action, now that it's authless (#499) (#527)
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chore(deps): update dependency @types/node to v14 (#527)
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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
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chore(deps): update dependency sinon to v12 (#527)
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<details>
<summary>sinonjs/sinon</summary>

### [`v12.0.1`](https://togithub.com/sinonjs/sinon/blob/master/CHANGES.md#&#8203;1201)

[Compare Source](https://togithub.com/sinonjs/sinon/compare/v12.0.0...v12.0.1)

-   [`3f598221`](https://togithub.com/sinonjs/sinon/commit/3f598221045904681f2b3b3ba1df617ed5e230e3)
    Fix issue with npm unlink for npm version > 6 (Carl-Erik Kopseng)
    > 'npm unlink' would implicitly unlink the current dir
    > until version 7, which requires an argument
-   [`51417a38`](https://togithub.com/sinonjs/sinon/commit/51417a38111eeeb7cd14338bfb762cc2df487e1b)
    Fix bundling of cjs module ([#&#8203;2412](https://togithub.com/sinonjs/sinon/issues/2412)) (Julian Grinblat)
    > -   Fix bundling of cjs module
    >
    > -   Run prettier

*Released by [Carl-Erik Kopseng](https://togithub.com/fatso83) on 2021-11-04.*

#### 12.0.0

### [`v12.0.0`](https://togithub.com/sinonjs/sinon/compare/v11.1.2...v12.0.0)

[Compare Source](https://togithub.com/sinonjs/sinon/compare/v11.1.2...v12.0.0)

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sofisl pushed a commit that referenced this issue Nov 11, 2022
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chore(deps): update dependency @types/sinon to v10 (#527)
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chore: release 1.2.0 (#527)
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* updated CHANGELOG.md [ci skip]

* updated package.json [ci skip]

* updated samples/package.json [ci skip]
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build: update copyright year to 2022 (#527)
6a3d0d1 
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build: perform publish using Node 12 (#527)
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fix: Updating WORKSPACE files to use the newest version of the Typesc…
a23d37a 
…ript generator. (#527)

Also removing the explicit generator tag for the IAMPolicy mixin for the kms and pubsub APIS as the generator will now read it from the .yaml file.

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Source-Link: googleapis/googleapis-gen@d3509d2
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chore: release 2.4.3 (#520)
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🤖 I have created a release \*beep\* \*boop\*
---
### [2.4.3](https://www.github.com/googleapis/nodejs-automl/compare/v2.4.2...v2.4.3) (2021-07-21)


### Bug Fixes

* **deps:** google-gax v2.17.1 ([#526](https://www.github.com/googleapis/nodejs-automl/issues/526)) ([8911d45](https://www.github.com/googleapis/nodejs-automl/commit/8911d457513f2c0c9cca6d2b7473b314ac3a4efd))
* **deps:** require google-gax v2.17.0 ([#524](https://www.github.com/googleapis/nodejs-automl/issues/524)) ([5863c54](https://www.github.com/googleapis/nodejs-automl/commit/5863c5440bf94fa2fd986b5c8f5265b86fd4497e))
* make request optional in all cases ([#521](https://www.github.com/googleapis/nodejs-automl/issues/521)) ([a45622a](https://www.github.com/googleapis/nodejs-automl/commit/a45622a9f53683a73fd2057ef5a2ccf22e7da946))
* REST fallback client header ([#513](https://www.github.com/googleapis/nodejs-automl/issues/513)) ([833d2d7](https://www.github.com/googleapis/nodejs-automl/commit/833d2d70ff1828a69e7f9482f58189f5d484751f))
* Updating WORKSPACE files to use the newest version of the Typescript generator. ([#527](https://www.github.com/googleapis/nodejs-automl/issues/527)) ([dfb504e](https://www.github.com/googleapis/nodejs-automl/commit/dfb504e12075136707e5915b1db6f65ed72d5aa9))
---


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