a2a8d54bb6
This change adds `access` format support for notifications to a Elasticsearch server, and it refactors `namespace` format support. In the case of `access` format, for each event in Minio, a JSON document is inserted into Elasticsearch with its timestamp set to the event's timestamp, and with the ID generated automatically by elasticsearch. No events are modified or deleted in this mode. In the case of `namespace` format, for each event in Minio, a JSON document is keyed together by the bucket and object name is updated in Elasticsearch. In the case of an object being created or over-written in Minio, a new document or an existing document is inserted into the Elasticsearch index. If an object is deleted in Minio, the corresponding document is deleted from the Elasticsearch index. Additionally, this change upgrades Elasticsearch support to the 5.x series. This is a breaking change, and users of previous elasticsearch versions should upgrade. Also updates documentation on Elasticsearch notification target usage and has a link to an elasticsearch upgrade guide. This is the last patch that finally resolves #3928.
91 lines
1.9 KiB
Go
91 lines
1.9 KiB
Go
// Copyright 2012-present Oliver Eilhard. All rights reserved.
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// Use of this source code is governed by a MIT-license.
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// See http://olivere.mit-license.org/license.txt for details.
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package elastic
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import (
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"fmt"
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"sync"
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"time"
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)
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// conn represents a single connection to a node in a cluster.
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type conn struct {
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sync.RWMutex
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nodeID string // node ID
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url string
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failures int
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dead bool
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deadSince *time.Time
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}
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// newConn creates a new connection to the given URL.
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func newConn(nodeID, url string) *conn {
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c := &conn{
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nodeID: nodeID,
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url: url,
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}
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return c
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}
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// String returns a representation of the connection status.
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func (c *conn) String() string {
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c.RLock()
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defer c.RUnlock()
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return fmt.Sprintf("%s [dead=%v,failures=%d,deadSince=%v]", c.url, c.dead, c.failures, c.deadSince)
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}
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// NodeID returns the ID of the node of this connection.
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func (c *conn) NodeID() string {
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c.RLock()
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defer c.RUnlock()
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return c.nodeID
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}
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// URL returns the URL of this connection.
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func (c *conn) URL() string {
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c.RLock()
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defer c.RUnlock()
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return c.url
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}
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// IsDead returns true if this connection is marked as dead, i.e. a previous
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// request to the URL has been unsuccessful.
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func (c *conn) IsDead() bool {
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c.RLock()
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defer c.RUnlock()
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return c.dead
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}
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// MarkAsDead marks this connection as dead, increments the failures
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// counter and stores the current time in dead since.
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func (c *conn) MarkAsDead() {
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c.Lock()
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c.dead = true
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if c.deadSince == nil {
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utcNow := time.Now().UTC()
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c.deadSince = &utcNow
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}
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c.failures += 1
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c.Unlock()
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}
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// MarkAsAlive marks this connection as eligible to be returned from the
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// pool of connections by the selector.
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func (c *conn) MarkAsAlive() {
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c.Lock()
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c.dead = false
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c.Unlock()
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}
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// MarkAsHealthy marks this connection as healthy, i.e. a request has been
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// successfully performed with it.
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func (c *conn) MarkAsHealthy() {
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c.Lock()
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c.dead = false
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c.deadSince = nil
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c.failures = 0
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c.Unlock()
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}
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