diff options
Diffstat (limited to 'logger/glog/glog.go')
| -rw-r--r-- | logger/glog/glog.go | 89 |
1 files changed, 53 insertions, 36 deletions
diff --git a/logger/glog/glog.go b/logger/glog/glog.go index 008c0e036..ef0c3068c 100644 --- a/logger/glog/glog.go +++ b/logger/glog/glog.go @@ -63,11 +63,17 @@ // Enable V-leveled logging at the specified level. // -vmodule="" // The syntax of the argument is a comma-separated list of pattern=N, -// where pattern is a literal file name (minus the ".go" suffix) or -// "glob" pattern and N is a V level. For instance, -// -vmodule=gopher*=3 -// sets the V level to 3 in all Go files whose names begin "gopher". +// where pattern is a literal file name or "glob" pattern matching +// and N is a V level. For instance, // +// -vmodule=gopher.go=3 +// sets the V level to 3 in all Go files named "gopher.go". +// +// -vmodule=foo=3 +// sets V to 3 in all files of any packages whose import path ends in "foo". +// +// -vmodule=foo/*=3 +// sets V to 3 in all files of any packages whose import path contains "foo". package glog import ( @@ -78,7 +84,7 @@ import ( "io" stdLog "log" "os" - "path/filepath" + "regexp" "runtime" "strconv" "strings" @@ -113,6 +119,20 @@ var severityName = []string{ fatalLog: "FATAL", } +// these path prefixes are trimmed for display, but not when +// matching vmodule filters. +var trimPrefixes = []string{ + "/github.com/ethereum/go-ethereum", + "/github.com/ethereum/ethash", +} + +func trimToImportPath(file string) string { + if root := strings.LastIndex(file, "src/"); root != 0 { + file = file[root+3:] + } + return file +} + // SetV sets the global verbosity level func SetV(v int) { logging.verbosity.set(Level(v)) @@ -261,21 +281,10 @@ type moduleSpec struct { // modulePat contains a filter for the -vmodule flag. // It holds a verbosity level and a file pattern to match. type modulePat struct { - pattern string - literal bool // The pattern is a literal string + pattern *regexp.Regexp level Level } -// match reports whether the file matches the pattern. It uses a string -// comparison if the pattern contains no metacharacters. -func (m *modulePat) match(file string) bool { - if m.literal { - return file == m.pattern - } - match, _ := filepath.Match(m.pattern, file) - return match -} - func (m *moduleSpec) String() string { // Lock because the type is not atomic. TODO: clean this up. logging.mu.Lock() @@ -322,7 +331,8 @@ func (m *moduleSpec) Set(value string) error { continue // Ignore. It's harmless but no point in paying the overhead. } // TODO: check syntax of filter? - filter = append(filter, modulePat{pattern, isLiteral(pattern), Level(v)}) + re, _ := compileModulePattern(pattern) + filter = append(filter, modulePat{re, Level(v)}) } logging.mu.Lock() defer logging.mu.Unlock() @@ -330,10 +340,21 @@ func (m *moduleSpec) Set(value string) error { return nil } -// isLiteral reports whether the pattern is a literal string, that is, has no metacharacters -// that require filepath.Match to be called to match the pattern. -func isLiteral(pattern string) bool { - return !strings.ContainsAny(pattern, `\*?[]`) +// compiles a vmodule pattern to a regular expression. +func compileModulePattern(pat string) (*regexp.Regexp, error) { + re := ".*" + for _, comp := range strings.Split(pat, "/") { + if comp == "*" { + re += "(/.*)?" + } else if comp != "" { + // TODO: maybe return error if comp contains * + re += "/" + regexp.QuoteMeta(comp) + } + } + if !strings.HasSuffix(pat, ".go") { + re += "/[^/]+\\.go" + } + return regexp.Compile(re + "$") } // traceLocation represents the setting of the -log_backtrace_at flag. @@ -556,10 +577,14 @@ func (l *loggingT) header(s severity, depth int) (*buffer, string, int) { file = "???" line = 1 } else { - slash := strings.LastIndex(file, "/") - if slash >= 0 { - file = file[slash+1:] + file = trimToImportPath(file) + for _, p := range trimPrefixes { + if strings.HasPrefix(file, p) { + file = file[len(p):] + break + } } + file = file[1:] // drop '/' } return l.formatHeader(s, file, line), file, line } @@ -592,9 +617,7 @@ func (l *loggingT) formatHeader(s severity, file string, line int) *buffer { buf.tmp[14] = '.' buf.nDigits(6, 15, now.Nanosecond()/1000, '0') buf.tmp[21] = ' ' - buf.nDigits(7, 22, pid, ' ') // TODO: should be TID - buf.tmp[29] = ' ' - buf.Write(buf.tmp[:30]) + buf.Write(buf.tmp[:22]) buf.WriteString(file) buf.tmp[0] = ':' n := buf.someDigits(1, line) @@ -976,15 +999,9 @@ func (lb logBridge) Write(b []byte) (n int, err error) { func (l *loggingT) setV(pc uintptr) Level { fn := runtime.FuncForPC(pc) file, _ := fn.FileLine(pc) - // The file is something like /a/b/c/d.go. We want just the d. - if strings.HasSuffix(file, ".go") { - file = file[:len(file)-3] - } - if slash := strings.LastIndex(file, "/"); slash >= 0 { - file = file[slash+1:] - } + file = trimToImportPath(file) for _, filter := range l.vmodule.filter { - if filter.match(file) { + if filter.pattern.MatchString(file) { l.vmap[pc] = filter.level return filter.level } |