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Live: Add logging to memory cache (#75245)

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Todd Treece 2023-09-21 12:59:01 -04:00 committed by GitHub
parent 70cb87380d
commit 71fe6f8390
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1 changed files with 16 additions and 1 deletions
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17
pkg/services/live/managedstream/cache_memory.go
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@ -6,18 +6,22 @@ import (
"sync" "sync"
"github.com/grafana/grafana-plugin-sdk-go/data" "github.com/grafana/grafana-plugin-sdk-go/data"
"github.com/grafana/grafana/pkg/infra/log"
) )
// MemoryFrameCache ... // MemoryFrameCache ...
type MemoryFrameCache struct { type MemoryFrameCache struct {
mu sync.RWMutex mu sync.RWMutex
frames map[int64]map[string]data.FrameJSONCache frames map[int64]map[string]data.FrameJSONCache
log log.Logger
} }
// NewMemoryFrameCache ... // NewMemoryFrameCache ...
func NewMemoryFrameCache() *MemoryFrameCache { func NewMemoryFrameCache() *MemoryFrameCache {
return &MemoryFrameCache{ return &MemoryFrameCache{
frames: map[int64]map[string]data.FrameJSONCache{}, frames: map[int64]map[string]data.FrameJSONCache{},
log: log.New("live.memoryframecache"),
} }
} }
@ -39,7 +43,13 @@ func (c *MemoryFrameCache) GetFrame(ctx context.Context, orgID int64, channel st
c.mu.RLock() c.mu.RLock()
defer c.mu.RUnlock() defer c.mu.RUnlock()
cachedFrame, ok := c.frames[orgID][channel] cachedFrame, ok := c.frames[orgID][channel]
return cachedFrame.Bytes(data.IncludeAll), ok, nil raw := cachedFrame.Bytes(data.IncludeAll)
c.log.Debug("Cache get",
"orgId", orgID,
"channel", channel,
"length", len(raw),
)
return raw, ok, nil
} }
func (c *MemoryFrameCache) Update(ctx context.Context, orgID int64, channel string, jsonFrame data.FrameJSONCache) (bool, error) { func (c *MemoryFrameCache) Update(ctx context.Context, orgID int64, channel string, jsonFrame data.FrameJSONCache) (bool, error) {
@ -51,5 +61,10 @@ func (c *MemoryFrameCache) Update(ctx context.Context, orgID int64, channel stri
cachedJsonFrame, exists := c.frames[orgID][channel] cachedJsonFrame, exists := c.frames[orgID][channel]
schemaUpdated := !exists || !cachedJsonFrame.SameSchema(&jsonFrame) schemaUpdated := !exists || !cachedJsonFrame.SameSchema(&jsonFrame)
c.frames[orgID][channel] = jsonFrame c.frames[orgID][channel] = jsonFrame
c.log.Debug("Cache update",
"orgId", orgID,
"channel", channel,
"length", len(jsonFrame.Bytes(data.IncludeAll)),
)
return schemaUpdated, nil return schemaUpdated, nil
} }