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feat(metrics): Add queue depth metrics #198

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merged 1 commit into from
Sep 9, 2024

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karlprieb
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Add metrics for the depth of the following queues:

  • Arweave trusted noderequest queue (composite client)
  • Data content attribute importer
  • Transaction fetcher
  • Transaction importer
  • Transaction offset importer
  • Webhook emitter
  • Data item indexer
  • ANS104 data indexer
  • ANS104 unbundler
  • Bundle data importer

Example of the metrics:

# HELP queue_length Current length of queues
# TYPE queue_length gauge
queue_length{queue_name="arweaveClientRequests"} 0
queue_length{queue_name="txFetcher"} 0
queue_length{queue_name="txImporter"} 0
queue_length{queue_name="txOffsetImporter"} 0
queue_length{queue_name="dataContentAttributeImporter"} 0
queue_length{queue_name="dataItemIndexer"} 13028
queue_length{queue_name="ans104DataIndexer"} 12031
queue_length{queue_name="ans104Unbundler"} 1003
queue_length{queue_name="bundleDataImporter"} 0
queue_length{queue_name="webhookEmitter"} 0

Add metrics for the depth of the following queues:
- Arweave trusted noderequest queue (composite client)
- Data content attribute importer
- Transaction fetcher
- Transaction importer
- Transaction offset importer
- Webhook emitter
- Data item indexer
- ANS104 data indexer
- ANS104 unbundler
- Bundle data importer
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coderabbitai bot commented Sep 9, 2024

Walkthrough

Walkthrough

The changes introduced in this pull request primarily enhance the monitoring capabilities of various components within the system by adding a queueDepth() method to multiple classes. This method allows for the retrieval of the current length of their respective queues. Additionally, a new registerQueueLengthGauge function is implemented to facilitate the registration of these queue depth metrics with Prometheus, enabling real-time tracking of queue lengths across different components.

Changes

Files Change Summary
src/arweave/composite-client.ts Added queueDepth(): number method to ArweaveCompositeClient class.
src/metrics.ts Added registerQueueLengthGauge(name: string, queue: { length: () => number }) function and queueLengthGauge instance.
src/system.ts Registered queue length gauges for multiple components using metrics.registerQueueLengthGauge.
src/workers/bundle-data-importer.ts Added queueDepth(): number method to BundleDataImporter class.
src/workers/data-content-attribute-importer.ts Added queueDepth(): number method to DataContentAttributeImporter class.
src/workers/transaction-fetcher.ts Added queueDepth(): number method to TransactionFetcher class.
src/workers/transaction-importer.ts Added queueDepth(): number method to TransactionImporter class.
src/workers/transaction-offset-importer.ts Added queueDepth(): number method to TransactionOffsetImporter class.
src/workers/webhook-emitter.ts Added queueDepth(): number method to WebhookEmitter class.

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Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 9b17f68 and cb6ba10.

Files selected for processing (9)
  • src/arweave/composite-client.ts (1 hunks)
  • src/metrics.ts (2 hunks)
  • src/system.ts (8 hunks)
  • src/workers/bundle-data-importer.ts (1 hunks)
  • src/workers/data-content-attribute-importer.ts (1 hunks)
  • src/workers/transaction-fetcher.ts (1 hunks)
  • src/workers/transaction-importer.ts (1 hunks)
  • src/workers/transaction-offset-importer.ts (1 hunks)
  • src/workers/webhook-emitter.ts (1 hunks)
Additional comments not posted (6)
src/workers/transaction-importer.ts (1)

82-84: Approve the addition of queueDepth method.

The method queueDepth correctly utilizes this.queue.length() to retrieve the queue length. Ensure that the length method is correctly implemented in the fastq library.

Run the following script to verify the implementation of the length method in the fastq library:

src/workers/data-content-attribute-importer.ts (1)

93-95: Approve the addition of queueDepth method.

The method queueDepth correctly utilizes this.queue.length() to retrieve the queue length. Ensure that the length method is correctly implemented in the fastq library.

Run the following script to verify the implementation of the length method in the fastq library:

src/workers/transaction-offset-importer.ts (1)

100-102: Approve the addition of queueDepth method.

The method queueDepth correctly utilizes this.queue.length() to retrieve the queue length. Ensure that the length method is correctly implemented in the fastq library.

Run the following script to verify the implementation of the length method in the fastq library:

src/workers/webhook-emitter.ts (1)

248-250: Approved: Addition of queueDepth method.

The queueDepth method correctly returns the length of the emissionQueue, aligning with the PR's objective to enhance monitoring capabilities. Ensure that the emissionQueue is properly initialized and managed throughout the class to avoid potential issues.

Verification successful

Verified: Proper Initialization and Management of emissionQueue

The emissionQueue is correctly initialized in the constructor and managed throughout the class. It is used consistently with its intended purpose, and its behavior is verified through tests. The review comment's concern is addressed.

  • Initialization: this.emissionQueue = fastq.promise(...) in webhook-emitter.ts.
  • Management: Methods and tests ensure proper queue operations.
Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the initialization and management of `emissionQueue`.

# Test: Search for the initialization and usage of `emissionQueue`. Expect: Proper initialization and management.
rg --type typescript -A 5 $'emissionQueue'

Length of output: 76


Script:

#!/bin/bash
# Description: Verify the initialization and management of `emissionQueue`.

# Test: Search for the initialization and usage of `emissionQueue`. Expect: Proper initialization and management.
rg 'emissionQueue' -A 5

Length of output: 6015

src/system.ts (1)

139-141: Approved: Registration of queue length gauges for system components.

The additions of registerQueueLengthGauge function calls are consistent and align with the PR's objective to enhance system monitoring. Ensure that each component's queueDepth() method is implemented correctly and that the metric names are unique and descriptive.

Also applies to: 261-263, 275-277, 295-297, 379-381, 399-401, 409-411, 426-428, 436-438, 570-572

Verification successful

Verification Successful: Queue Depth Methods and Metric Names

The queueDepth() methods are correctly implemented, and the metric names used in registerQueueLengthGauge calls are unique and descriptive, aligning with the components they monitor. No issues were found.

Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the implementation of `queueDepth()` methods and uniqueness of metric names.

# Test: Search for the implementation of `queueDepth()` methods and check metric names. Expect: Proper implementation and unique, descriptive names.
rg --type typescript -A 5 $'queueDepth'

Length of output: 73


Script:

#!/bin/bash
# Description: Verify the implementation of `queueDepth()` methods and uniqueness of metric names.

# Search for the implementation of `queueDepth()` methods.
rg 'queueDepth' --glob '*.ts' -A 5

# Search for `registerQueueLengthGauge` function calls to check metric names.
rg 'registerQueueLengthGauge' --glob '*.ts' -A 2

Length of output: 8529

src/arweave/composite-client.ts (1)

785-787: Approved: Addition of queueDepth method to ArweaveCompositeClient.

The queueDepth method correctly returns the length of the trustedNodeRequestQueue, enhancing the class's functionality by allowing monitoring of the request queue depth. Ensure that the trustedNodeRequestQueue is properly initialized and managed throughout the class to avoid potential issues.

Verification successful

Verification Successful: trustedNodeRequestQueue is Properly Initialized and Managed

The trustedNodeRequestQueue is correctly initialized using fastq.promise and is actively managed throughout the ArweaveCompositeClient class. The queue is used for handling requests, and its depth is monitored using the queueDepth method. No issues were found regarding its initialization or management.

  • Initialization: fastq.promise with this.trustedNodeRequest and maxConcurrentRequests.
  • Usage: Multiple push operations and length checks.
Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the initialization and management of `trustedNodeRequestQueue`.

# Test: Search for the initialization and usage of `trustedNodeRequestQueue`. Expect: Proper initialization and management.
rg --type typescript -A 5 $'trustedNodeRequestQueue'

Length of output: 86


Script:

#!/bin/bash
# Description: Verify the initialization and management of `trustedNodeRequestQueue`.

# Test: Search for the initialization and usage of `trustedNodeRequestQueue`. Expect: Proper initialization and management.
rg --type ts -A 5 $'trustedNodeRequestQueue'

Length of output: 3648


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codecov bot commented Sep 9, 2024

Codecov Report

Attention: Patch coverage is 58.06452% with 13 lines in your changes missing coverage. Please review.

Project coverage is 68.53%. Comparing base (9b17f68) to head (cb6ba10).
Report is 1 commits behind head on develop.

Files with missing lines Patch % Lines
src/metrics.ts 60.86% 9 Missing ⚠️
src/workers/bundle-data-importer.ts 50.00% 2 Missing ⚠️
src/workers/webhook-emitter.ts 50.00% 2 Missing ⚠️
Additional details and impacted files
@@             Coverage Diff             @@
##           develop     #198      +/-   ##
===========================================
- Coverage    68.57%   68.53%   -0.05%     
===========================================
  Files           32       32              
  Lines         7765     7796      +31     
  Branches       438      438              
===========================================
+ Hits          5325     5343      +18     
- Misses        2439     2452      +13     
  Partials         1        1              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

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Actionable comments posted: 3

Outside diff range, codebase verification and nitpick comments (1)
src/metrics.ts (1)

213-222: Gauge queueLengthGauge correctly implemented, monitor for performance.

The implementation of queueLengthGauge is correct and effectively collects metrics on queue lengths. The dynamic nature of the collect method allows for real-time updates, which is crucial for monitoring.

While the implementation is efficient, it's important to monitor the performance impact of this dynamic metric collection, especially in systems with a large number of queues or high update frequencies.

Comment on lines +125 to +127
queueDepth(): number {
return this.queue.length();
}
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Method queueDepth correctly implemented.

The implementation of queueDepth method is correct and adheres to the expected functionality of returning the current queue length. It's a straightforward and effective way to monitor the queue size.

Consider adding unit tests to verify the behavior of the queueDepth method. Would you like assistance in creating these tests?

Comment on lines +138 to +140
queueDepth(): number {
return this.queue.length();
}
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Method queueDepth correctly implemented.

The implementation of queueDepth method is correct and adheres to the expected functionality of returning the current queue length. It's a straightforward and effective way to monitor the queue size.

Consider adding unit tests to verify the behavior of the queueDepth method. Would you like assistance in creating these tests?

Comment on lines +206 to +211
export function registerQueueLengthGauge(
name: string,
queue: { length: () => number },
) {
queues[name] = queue;
}
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Function registerQueueLengthGauge implemented correctly, consider handling duplicates.

The implementation of registerQueueLengthGauge is correct and effectively registers queues for monitoring. However, consider adding error handling or a check to prevent potential issues if a queue with the same name is registered multiple times.

Consider implementing a mechanism to handle duplicate queue names to prevent unintended overwrites. This could be a simple check before adding the queue to the queues object.

@djwhitt djwhitt merged commit 830a0af into develop Sep 9, 2024
5 checks passed
@djwhitt djwhitt deleted the PE-6640-queue-depth-metrics branch September 9, 2024 14:26
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2 participants