Add optional show_first flag to consolidate directive that logs
the first error immediately and then consolidates subsequent errors.
When show_first is enabled:
- The first matching error is logged immediately with full details
(rcode, domain, type, error message) using the configured log level
- Subsequent matching errors are consolidated during the period
- At period end:
- If only one error occurred, no summary is printed (already logged)
- If multiple errors occurred, summary shows the total count
Syntax:
consolidate DURATION REGEXP [LEVEL] [show_first]
Example with 3 errors:
[WARNING] 2 example.org. A: read udp 10.0.0.1:53->8.8.8.8:53: i/o timeout
[WARNING] 3 errors like '^read udp .* i/o timeout$' occurred in last 30s
Example with 1 error:
[WARNING] 2 example.org. A: read udp 10.0.0.1:53->8.8.8.8:53: i/o timeout
Implementation details:
- Add showFirst bool to pattern struct
- Rename inc() to consolidateError(), return false for showFirst case
- Use function pointer in ServeDNS to unify log calls with proper level
- Simplify logPattern() with single condition (cnt > 1 || !showFirst)
- Refactor parseLogLevel() to parseOptionalParams() with map-based dispatch
- Validate parameter order: log level must come before show_first
- Update README.md with show_first documentation and examples
- Add comprehensive test cases for show_first functionality
Signed-off-by: cangming <cangming@cangming.app>
* global: move to context
Move from golang.org/x/net/context to std lib's context.
Change done with:
for i in $(grep -l '/context' **/*.go); do sed -e 's|golang.org/x/net/context|context|' -i $i; echo $i; done
for i in **/*.go; do goimports -w $i; done
* drop from dns.pb.go as well
* Rename middleware to plugin
first pass; mostly used 'sed', few spots where I manually changed
text.
This still builds a coredns binary.
* fmt error
* Rename AddMiddleware to AddPlugin
* Readd AddMiddleware to remain backwards compat
