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connection.go 1.93 KB
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// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
// Use of this source code is governed by a MIT-license.
// See http://olivere.mit-license.org/license.txt for details.
package elastic
import (
"fmt"
"sync"
"time"
)
// conn represents a single connection to a node in a cluster.
type conn struct {
sync.RWMutex
nodeID string // node ID
url string
failures int
dead bool
deadSince *time.Time
}
// newConn creates a new connection to the given URL.
func newConn(nodeID, url string) *conn {
c := &conn{
nodeID: nodeID,
url: url,
}
return c
}
// String returns a representation of the connection status.
func (c *conn) String() string {
c.RLock()
defer c.RUnlock()
return fmt.Sprintf("%s [dead=%v,failures=%d,deadSince=%v]", c.url, c.dead, c.failures, c.deadSince)
}
// NodeID returns the ID of the node of this connection.
func (c *conn) NodeID() string {
c.RLock()
defer c.RUnlock()
return c.nodeID
}
// URL returns the URL of this connection.
func (c *conn) URL() string {
c.RLock()
defer c.RUnlock()
return c.url
}
// IsDead returns true if this connection is marked as dead, i.e. a previous
// request to the URL has been unsuccessful.
func (c *conn) IsDead() bool {
c.RLock()
defer c.RUnlock()
return c.dead
}
// MarkAsDead marks this connection as dead, increments the failures
// counter and stores the current time in dead since.
func (c *conn) MarkAsDead() {
c.Lock()
c.dead = true
if c.deadSince == nil {
utcNow := time.Now().UTC()
c.deadSince = &utcNow
}
c.failures += 1
c.Unlock()
}
// MarkAsAlive marks this connection as eligible to be returned from the
// pool of connections by the selector.
func (c *conn) MarkAsAlive() {
c.Lock()
c.dead = false
c.Unlock()
}
// MarkAsHealthy marks this connection as healthy, i.e. a request has been
// successfully performed with it.
func (c *conn) MarkAsHealthy() {
c.Lock()
c.dead = false
c.deadSince = nil
c.failures = 0
c.Unlock()
}
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https://gitee.com/awol2010ex/github.com-olivere-elastic.git
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github.com-olivere-elastic
github.com-olivere-elastic
v2.0.51

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