0f4df23290
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62 lines
860 B
Go
62 lines
860 B
Go
package poolcache
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import (
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"context"
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"fmt"
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"sync"
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"github.com/jackc/pgx/v5/pgxpool"
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)
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type Cache struct {
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lock sync.RWMutex
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closed bool
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pools map[string]*pgxpool.Pool
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}
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func New() *Cache {
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return &Cache{
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pools: map[string]*pgxpool.Pool{},
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}
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}
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func (c *Cache) Open(ctx context.Context, uri string) (*pgxpool.Pool, error) {
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if c.closed {
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return nil, fmt.Errorf("poolcache is closed")
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}
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c.lock.RLock()
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existing, found := c.pools[uri]
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c.lock.RUnlock()
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if found {
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return existing, nil
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}
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pool, err := pgxpool.New(ctx, uri)
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if err != nil {
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return nil, err
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}
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c.lock.Lock()
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c.pools[uri] = pool
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c.lock.Unlock()
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return pool, nil
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}
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func (c *Cache) Close() error {
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c.lock.Lock()
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defer c.lock.Unlock()
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var closeErr error
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for _, pool := range c.pools {
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pool.Close()
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}
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c.closed = true
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clear(c.pools)
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return closeErr
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}
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