diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 12:08:03 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 12:08:18 +0000 |
commit | 5da14042f70711ea5cf66e034699730335462f66 (patch) | |
tree | 0f6354ccac934ed87a2d555f45be4c831cf92f4a /src/go/collectors/go.d.plugin/pkg/matcher/cache.go | |
parent | Releasing debian version 1.44.3-2. (diff) | |
download | netdata-5da14042f70711ea5cf66e034699730335462f66.tar.xz netdata-5da14042f70711ea5cf66e034699730335462f66.zip |
Merging upstream version 1.45.3+dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/go/collectors/go.d.plugin/pkg/matcher/cache.go')
-rw-r--r-- | src/go/collectors/go.d.plugin/pkg/matcher/cache.go | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/pkg/matcher/cache.go b/src/go/collectors/go.d.plugin/pkg/matcher/cache.go new file mode 100644 index 000000000..4594fa06f --- /dev/null +++ b/src/go/collectors/go.d.plugin/pkg/matcher/cache.go @@ -0,0 +1,56 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +package matcher + +import "sync" + +type ( + cachedMatcher struct { + matcher Matcher + + mux sync.RWMutex + cache map[string]bool + } +) + +// WithCache adds cache to the matcher. +func WithCache(m Matcher) Matcher { + switch m { + case TRUE(), FALSE(): + return m + default: + return &cachedMatcher{matcher: m, cache: make(map[string]bool)} + } +} + +func (m *cachedMatcher) Match(b []byte) bool { + s := string(b) + if result, ok := m.fetch(s); ok { + return result + } + result := m.matcher.Match(b) + m.put(s, result) + return result +} + +func (m *cachedMatcher) MatchString(s string) bool { + if result, ok := m.fetch(s); ok { + return result + } + result := m.matcher.MatchString(s) + m.put(s, result) + return result +} + +func (m *cachedMatcher) fetch(key string) (result bool, ok bool) { + m.mux.RLock() + result, ok = m.cache[key] + m.mux.RUnlock() + return +} + +func (m *cachedMatcher) put(key string, result bool) { + m.mux.Lock() + m.cache[key] = result + m.mux.Unlock() +} |