(Sentinel) DAL rest network delay checker #2326
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Caution Review failedThe pull request is closed. 📝 Walkthrough📝 WalkthroughWalkthroughThe changes in this pull request involve modifications to the Changes
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (3)
node/pkg/checker/dal/types.go (1)
15-15: Add documentation for NetworkDelayThresholdWhile the constant follows the established naming convention and is well-placed with other timing constants, please add a comment explaining:
- The significance of this 6-second threshold
- What happens when this threshold is exceeded
- Why this specific duration was chosen
node/pkg/checker/dal/app.go (2)
112-114: Consider moving network delay tracking to a dedicated structureThe network delay counter is currently managed at the function level. Consider moving it to a dedicated structure alongside other monitoring state, similar to how
UpdateTimesis implemented. This would provide better encapsulation and state management.type DalMonitor struct { alarmCount map[string]int wsDelayAlarmCount map[string]int + networkDelayAlarmCount int // ... other fields }
140-141: Add documentation for the networkDelayAlarmCount parameterThe function signature change looks good, but consider adding documentation to explain the purpose and behavior of the networkDelayAlarmCount parameter.
+// checkDal verifies the DAL endpoint health by checking response times and data freshness. +// networkDelayAlarmCount tracks consecutive network delays exceeding the threshold. func checkDal(endpoint string, key string, alarmCount map[string]int, networkDelayAlarmCount int) error {
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📒 Files selected for processing (2)
node/pkg/checker/dal/app.go(3 hunks)node/pkg/checker/dal/types.go(1 hunks)
🧰 Additional context used
🪛 golangci-lint (1.62.2)
node/pkg/checker/dal/app.go
155-155: ineffectual assignment to networkDelayAlarmCount
(ineffassign)
158-158: ineffectual assignment to networkDelayAlarmCount
(ineffassign)
🔇 Additional comments (2)
node/pkg/checker/dal/types.go (1)
15-15: Verify if 6 seconds is an appropriate threshold for network delays
The 6-second network delay threshold seems high and might impact user experience. Let's verify this value against production metrics.
Consider:
- Implementing a configurable threshold that can be adjusted based on environment (development, staging, production)
- Adding monitoring and alerting for when delays approach this threshold
- Implementing gradual degradation or circuit breaking patterns instead of a hard threshold
✅ Verification successful
Let me gather more context about the delay thresholds and their usage.
The 6-second network delay threshold is appropriate within the system's context
The NetworkDelayThreshold of 6 seconds is well-aligned with other delay thresholds in the system:
- It's consistent with similar timeouts like
VolumeFetchTimeout(6s) - It sits between
DelayOffset(5s) andWsDelayThreshold(9s) - The system has built-in safeguards:
- Alarms only trigger after multiple occurrences (
AlarmOffsetInTotal = 3) - Network delays are added to the
DelayOffsetin calculations - Debug logging is in place to monitor the actual delays
- Alarms only trigger after multiple occurrences (
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Search for any existing network delay metrics or configurations in the codebase
# that might help validate this threshold value
# Look for network delay related configurations
echo "Searching for network delay related configurations..."
rg -i "network.*delay|delay.*network" --type go
# Look for any metrics collection related to network delays
echo "Searching for metrics collection..."
rg -i "metrics.*network|network.*latency|network.*delay" --type go
# Look for any related tests that might validate this threshold
echo "Searching for related tests..."
rg -i "test.*network.*delay|network.*delay.*test" --type go
Length of output: 2611
Script:
#!/bin/bash
# Look for other delay thresholds in the codebase for comparison
echo "Searching for delay thresholds..."
rg -i "time\.Second.*=|=.*time\.Second" --type go
# Look for DelayOffset constant referenced in the code
echo "Searching for DelayOffset usage..."
rg "DelayOffset" --type go -A 2
# Look for AlarmOffsetInTotal to understand the alarm mechanism
echo "Searching for AlarmOffsetInTotal..."
rg "AlarmOffsetInTotal" --type go -A 2
Length of output: 7371
node/pkg/checker/dal/app.go (1)
Line range hint 117-124: LGTM! Error handling and logging are appropriate
The function call and surrounding error handling are well-implemented.
Description
checks network delay of dal
returns error if delayed more than certain threshold
Type of change
Please delete options that are not relevant.
Checklist before requesting a review
Deployment