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Added PostgreSQL monitoring and maintenance capabilities to the API, including new endpoints for instance-level metrics, maintenance operations, and job scheduling. Updated the HTTP API to support PostgreSQL monitoring routes and integrated a background scheduler for metrics collection. Enhanced the CLI with database commands for maintenance tasks. Updated documentation to reflect these changes.
38 lines
649 B
Go
38 lines
649 B
Go
package pgmonitor
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import (
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"sync"
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"time"
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)
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type cacheEntry struct {
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at time.Time
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data any
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}
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type ttlCache struct {
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mu sync.RWMutex
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ttl time.Duration
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items map[string]cacheEntry
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}
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func newTTLCache(ttl time.Duration) *ttlCache {
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return &ttlCache{ttl: ttl, items: make(map[string]cacheEntry)}
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}
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func (c *ttlCache) get(key string) (any, bool) {
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c.mu.RLock()
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defer c.mu.RUnlock()
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e, ok := c.items[key]
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if !ok || time.Since(e.at) > c.ttl {
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return nil, false
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}
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return e.data, true
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}
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func (c *ttlCache) set(key string, data any) {
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c.mu.Lock()
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defer c.mu.Unlock()
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c.items[key] = cacheEntry{at: time.Now().UTC(), data: data}
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}
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