api: Implement bucket notification. (#2271)

* Implement basic S3 notifications through queues

Supports multiple queues and three basic queue types:

1. NilQueue -- messages don't get sent anywhere
2. LogQueue -- messages get logged
3. AmqpQueue -- messages are sent to an AMQP queue

* api: Implement bucket notification.

Supports two different queue types

- AMQP
- ElasticSearch.

* Add support for redis

vendor/gopkg.in/olivere/elastic.v3/indices_create.go

@@ -0,0 +1,128 @@
+// 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 (
+	"errors"
+	"net/url"
+
+	"gopkg.in/olivere/elastic.v3/uritemplates"
+)
+
+// IndicesCreateService creates a new index.
+//
+// See https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-create-index.html
+// for details.
+type IndicesCreateService struct {
+	client        *Client
+	pretty        bool
+	index         string
+	timeout       string
+	masterTimeout string
+	bodyJson      interface{}
+	bodyString    string
+}
+
+// NewIndicesCreateService returns a new IndicesCreateService.
+func NewIndicesCreateService(client *Client) *IndicesCreateService {
+	return &IndicesCreateService{client: client}
+}
+
+// Index is the name of the index to create.
+func (b *IndicesCreateService) Index(index string) *IndicesCreateService {
+	b.index = index
+	return b
+}
+
+// Timeout the explicit operation timeout, e.g. "5s".
+func (s *IndicesCreateService) Timeout(timeout string) *IndicesCreateService {
+	s.timeout = timeout
+	return s
+}
+
+// MasterTimeout specifies the timeout for connection to master.
+func (s *IndicesCreateService) MasterTimeout(masterTimeout string) *IndicesCreateService {
+	s.masterTimeout = masterTimeout
+	return s
+}
+
+// Body specifies the configuration of the index as a string.
+// It is an alias for BodyString.
+func (b *IndicesCreateService) Body(body string) *IndicesCreateService {
+	b.bodyString = body
+	return b
+}
+
+// BodyString specifies the configuration of the index as a string.
+func (b *IndicesCreateService) BodyString(body string) *IndicesCreateService {
+	b.bodyString = body
+	return b
+}
+
+// BodyJson specifies the configuration of the index. The interface{} will
+// be serializes as a JSON document, so use a map[string]interface{}.
+func (b *IndicesCreateService) BodyJson(body interface{}) *IndicesCreateService {
+	b.bodyJson = body
+	return b
+}
+
+// Pretty indicates that the JSON response be indented and human readable.
+func (b *IndicesCreateService) Pretty(pretty bool) *IndicesCreateService {
+	b.pretty = pretty
+	return b
+}
+
+// Do executes the operation.
+func (b *IndicesCreateService) Do() (*IndicesCreateResult, error) {
+	if b.index == "" {
+		return nil, errors.New("missing index name")
+	}
+
+	// Build url
+	path, err := uritemplates.Expand("/{index}", map[string]string{
+		"index": b.index,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	params := make(url.Values)
+	if b.pretty {
+		params.Set("pretty", "1")
+	}
+	if b.masterTimeout != "" {
+		params.Set("master_timeout", b.masterTimeout)
+	}
+	if b.timeout != "" {
+		params.Set("timeout", b.timeout)
+	}
+
+	// Setup HTTP request body
+	var body interface{}
+	if b.bodyJson != nil {
+		body = b.bodyJson
+	} else {
+		body = b.bodyString
+	}
+
+	// Get response
+	res, err := b.client.PerformRequest("PUT", path, params, body)
+	if err != nil {
+		return nil, err
+	}
+
+	ret := new(IndicesCreateResult)
+	if err := b.client.decoder.Decode(res.Body, ret); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+// -- Result of a create index request.
+
+// IndicesCreateResult is the outcome of creating a new index.
+type IndicesCreateResult struct {
+	Acknowledged bool `json:"acknowledged"`
+}