feat: add repl_connect_status to pika_exporter #2961
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WalkthroughThe changes introduce a new parser type, Changes
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (1)
tools/pika_exporter/version.go (1)
4-7: Consider Updating Version Information Dynamically During BuildHardcoding build metadata such as
BuildVersion,BuildCommitSha,BuildDate, andGoVersioncan lead to inconsistencies and outdated information. It's a best practice to populate these fields dynamically during the build process using build flags.Consider modifying the build process to inject these values. For example, in your
Makefileor build script, you could use:go build -ldflags "-X main.BuildVersion=$(VERSION) -X main.BuildCommitSha=$(COMMIT_SHA) -X 'main.BuildDate=$(BUILD_DATE)' -X 'main.GoVersion=$(GO_VERSION)'" -o your_binaryAnd in your code, you can keep the variables uninitialized:
var ( BuildVersion string BuildCommitSha string BuildDate string GoVersion string )This ensures the version information is accurate and reflects the actual build.
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Review profile: CHILL
📒 Files selected for processing (3)
tools/pika_exporter/exporter/metrics/parser.go(1 hunks)tools/pika_exporter/exporter/metrics/replication.go(1 hunks)tools/pika_exporter/version.go(1 hunks)
🔇 Additional comments (2)
tools/pika_exporter/exporter/metrics/replication.go (2)
185-195: 🛠️ Refactor suggestion
Potential Regex Misinterpretation and Status Mapping Issues
The regular expression used may not account for all possible whitespace variations or unexpected input formats. Additionally, the status mapping assumes that all statuses are accounted for, but unrecognized statuses default to 0, which could mask issues.
Consider updating the regex pattern to be more robust and adding handling for unexpected statuses. Apply this diff:
reg: regexp.MustCompile(`(?m)^\s*(?P<db_name>db\d+)\s*:\s*(?P<status>\w+)\s*$`),
Parser: &statusToGaugeParser{
statusMapping: map[string]int{
"no_connect": 0,
"try_to_incr_sync": 1,
"try_to_full_sync": 2,
"syncing_full": 3,
"connecting": 4,
"connected": 5,
"error": -1,
+ // Add any missing statuses here
},
+ },
+ // Add handling for unexpected statuses
+ Parser: &normalParser{},
},Also, ensure that any unexpected or new statuses are logged appropriately and handled to prevent silent failures.
Likely invalid or redundant comment.
178-206: Duplicate Metric Configurations Detected
The new metric "slave_info>=3.5.5_or_4.0.0" might overlap with existing configurations for slave information metrics. Ensure that there are no conflicting parsers that might process the same data differently.
Run the following script to check for overlapping metric names and configurations:
If any metric names appear in the output, consider consolidating or renaming them to avoid conflicts.
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (2)
tools/pika_exporter/exporter/metrics/parser.go (2)
19-21: Add documentation for the new type.Consider adding a doc comment explaining the purpose and usage of
statusToGaugeParser. This will help other developers understand how to use this parser for status-to-gauge mappings.Add this documentation above the type declaration:
+// statusToGaugeParser converts string status values to gauge metrics using a predefined mapping. +// It is used for metrics that represent states or status values as numeric gauges. type statusToGaugeParser struct { statusMapping map[string]int }
23-61: LGTM with suggestions for improvement.The implementation is well-structured and handles edge cases appropriately. Consider these improvements:
- Add debug logging for successful status mappings to aid in troubleshooting.
- Consider adding validation for the statusMapping field to ensure it's not nil.
Here's a suggested improvement:
func (p *statusToGaugeParser) Parse(m MetricMeta, c Collector, opt ParseOption) { + if p.statusMapping == nil { + log.Warnf("statusToGaugeParser::Parse status mapping is nil. metricName:%s", m.Name) + return + } m.Lookup(func(m MetaData) { // ... existing code ... metric.Value = float64(mappedValue) + log.Debugf("statusToGaugeParser::Parse mapped status. metricName:%s status:%s value:%d", + m.Name, v, mappedValue) } } // ... existing code ... }) }
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📒 Files selected for processing (2)
tools/pika_exporter/exporter/metrics/parser.go(1 hunks)tools/pika_exporter/exporter/metrics/replication.go(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- tools/pika_exporter/exporter/metrics/replication.go
🔇 Additional comments (2)
tools/pika_exporter/exporter/metrics/parser.go (2)
57-59:
Fix error argument in log.Errorf
The error logging statement uses m.ValueName instead of err, which will result in incorrect error messages.
Apply this diff to fix the error logging:
if err := c.Collect(metric); err != nil {
log.Errorf("statusToGaugeParser::Parse metric collect failed. metric:%#v err:%s",
- m, m.ValueName)
+ m, err)
}19-61: Implementation aligns with PR objectives.
The statusToGaugeParser implementation effectively supports the repl_connect_status metric requirements:
- Can handle all specified status mappings (no_connect:0, try_to_incr_sync:1, etc.)
- Provides appropriate default value (0) for unknown statuses
- Includes error handling and logging for troubleshooting
Let's verify the usage of this parser:
✅ Verification successful
Implementation aligns with PR objectives and is properly configured
The verification confirms that the statusToGaugeParser is correctly implemented and configured in replication.go:
- Status mapping is properly defined with all required states: no_connect(0), try_to_incr_sync(1), try_to_full_sync(2), syncing_full(3), connecting(4), connected(5), error(-1)
- The parser is correctly integrated into the metrics configuration for
repl_connect_statusmetric - The metric is properly configured with appropriate labels (addr, alias, db_name) and help text
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify the configuration and usage of statusToGaugeParser for repl_connect_status
# Check for metric configuration
rg -l "repl_connect_status" .
# Check for status mapping initialization
ast-grep --pattern 'statusMapping = map[string]int{
$$$
}'
Length of output: 199
Script:
#!/bin/bash
# Let's check the actual implementation and usage of statusToGaugeParser
# Check replication.go for the metric configuration and parser usage
cat tools/pika_exporter/exporter/metrics/replication.go
# Search for any other status mapping initialization patterns
ast-grep --pattern 'map[string]int{$$$}'
Length of output: 12252
* add repl_connect_status to pika_exporter
本PR将pika info指标中提供的repl_connect_status加入到了pika_exporter, 该指标的值域以及映射如下：
no_connect: 0,
try_to_incr_sync: 1,
try_to_full_sync: 2,
syncing_full: 3,
connecting: 4,
connected: 5,
error: -1,
Summary by CodeRabbit
New Features
Bug Fixes