elastigo

A Go (Golang) based Elasticsearch client, implements core api for Indexing and searching. GoDoc http://godoc.org/github.com/hailocab/elastigo

To get the Chef based Vagrantfile working, be sure to pull like so::

# This will pull submodules.
git clone --recursive git@github.com:hailocab/elastigo.git

status updates

• 2013-7-10 Improvments/changes to bulk indexor (includes breaking changes to support TTL), Search dsl supports And/Or/Not
  • SearchDsl should still be considered beta at this point, there will be minor breaking changes as more of the elasticsearch feature set is implemented.
• 2013-1-26 expansion of search dsl for greater coverage
• 2012-12-30 new bulk indexing and search dsl
• 2012-10-12 early in development, not ready for production yet.

Adding content to Elasticsearch

examples:

import "github.com/hailocab/elastigo/api"
import "github.com/hailocab/elastigo/core"

type Tweet struct {
  User     string    `json:"user"`
  Message  string    `json:"message"`
}

// Set the Elasticsearch Host to Connect to
api.Domain = "localhost" 
// api.Port = "9300"

// add single go struct entity
response, _ := core.Index(true, "twitter", "tweet", "1", Tweet{"kimchy", "Search is cool"})

// you have bytes
tw := Tweet{"kimchy", "Search is cool part 2"}
bytesLine, err := json.Marshall(tw)
response, _ := core.Index(true, "twitter", "tweet", "2", bytesLine)

// Bulk Indexing 
core.IndexBulk("twitter", "tweet", "3", &time.Now(), Tweet{"kimchy", "Search is now cooler"})

// Search Using Raw json String
searchJson := `{
    "query" : {
        "term" : { "user" : "kimchy" }
    }
}`
out, err := core.SearchRequest(true, "twitter", "tweet", searchJson, "")
if len(out.Hits.Hits) == 1 {
  fmt.Println(string(out.Hits.Hits[0].Source))
}

Search DSL Examples

A Faceted, ranged Search using the Search DSL :

import "github.com/hailocab/elastigo/api"
import "github.com/hailocab/elastigo/core"

// Set the Elasticsearch Host to Connect to
api.Domain = "localhost" 
// api.Port = "9300"

out, err := Search("github").Size("1").Facet(
  Facet().Fields("actor").Size("500"),
).Query(
  Query().Range(
     Range().Field("created_at").From("2012-12-10T15:00:00-08:00").To("2012-12-10T15:10:00-08:00"),
  ).Search("add"),
).Result()

A Ranged Search using the Search DSL :

out, err := Search("github").Type("Issues").Pretty().Query(
  Query().Range(
     Range().Field("created_at").From("2012-12-10T15:00:00-08:00").To("2012-12-10T15:10:00-08:00"),
  ).Search("add"),
).Result()

A Simple Search using the Search DSL :

out, err := Search("github").Type("Issues").Size("100").Search("add").Result()

A Direct Search using the api :

qry := map[string]interface{}{
  "query":map[string]interface{}{
     "term":map[string]string{"user:"kimchy"},
  },
}
core.SearchRequest(true, "github", "Issues", qry, "", 0)

A Direct Search using the query string Api :

core.SearchUri("github", "Issues", "user:kimchy", "", 0)

A Filtered search Search DSL :

out, err := Search("github").Filter(
  Filter().Exists("repository.name"),
).Result()

Adding content to Elasticsearch in Bulk

example:

import "github.com/hailocab/elastigo/api"
import "github.com/hailocab/elastigo/core"

// Set the Elasticsearch Host to Connect to
api.Domain = "localhost" 
// api.Port = "9300"

indexor := core.NewBulkIndexorErrors(10, 60)
done := make(chan bool)
indexor.Run(done)

go func() {
  for errBuf := range indexor.ErrorChannel {
    // just blissfully print errors forever
    fmt.Println(errBuf.Err)
  }
}()
for i := 0; i < 20; i++ {
  indexor.Index("twitter", "user", strconv.Itoa(i), "", nil, `{"name":"bob"}`)
}
done <- true

license

Copyright 2012 Matthew Baird, Aaron Raddon, and more!

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.