func main() {
// Parse arguments
kingpin.Version(Version)
kingpin.CommandLine.Help = "Search for logs in a Logstash Elasticsearch index."
kingpin.Parse()
errorLog = log.New(os.Stderr, "ERROR ", log.Ltime|log.Lshortfile)
if *verboseFlag || *debugFlag {
infoLog = log.New(os.Stderr, "INFO ", log.Ltime|log.Lshortfile)
}
if *debugFlag {
debugLog = log.New(os.Stderr, "TRACE ", log.Ltime|log.Lshortfile)
}
// Connect to the Elasticsearch cluster
logInfo("Creating client...\n")
client, err := elastic.NewClient(
elastic.SetURL((*urlFlag).String()),
elastic.SetSniff(false),
elastic.SetHealthcheck(false),
elastic.SetErrorLog(errorLog),
elastic.SetInfoLog(infoLog),
elastic.SetTraceLog(debugLog))
exitIfErr(err)
if *tailFlag {
Tail(client)
} else {
Search(client)
}
}
func (es *ElasticSearch) Conn() error {
client, err := elastic.NewClient(
elastic.SetURL(es.uri),
elastic.SetSniff(false),
elastic.SetHealthcheckInterval(10*time.Second),
elastic.SetMaxRetries(5))
if err != nil {
// Handle error
return err
}
exists, err := client.IndexExists(es.index).Do()
if err != nil {
// Handle error
return err
}
if !exists {
// Create a new index.
createIndex, err := client.CreateIndex(es.index).Do()
if err != nil {
// Handle error
return err
}
if !createIndex.Acknowledged {
// Not acknowledged
}
}
es.client = client
return nil
}
func runIndices(cmd *Command, args []string) {
var pattern = ""
if len(args) > 0 {
pattern = args[0]
}
// Get a client
client, err := elastic.NewClient(elastic.SetURL(esUrl))
if err != nil {
log.Fatal("%v", err)
}
indices, err := client.IndexNames()
if err != nil {
log.Fatal("%v", err)
}
// Sort by default
sort.Strings(indices)
for _, index := range indices {
if len(pattern) > 0 {
matched, err := regexp.MatchString(pattern, index)
if err != nil {
log.Fatal("invalid pattern")
}
if matched {
fmt.Println(index)
}
} else {
fmt.Println(index)
}
}
}
func checkClient() {
// Create a client and connect to http://192.1.199.81:9200
// client, err := elastic.NewClient(elastic.SetURL("http://192.1.199.81:9200"))
client, err := elastic.NewClient(elastic.SetURL("http://127.0.0.1:9200"))
if err != nil {
// Handle error
panic(err)
}
// Ping the Elasticsearch server to get e.g. the version number
info, code, err := client.Ping().Do()
if err != nil {
// Handle error
panic(err)
}
fmt.Printf("Elasticsearch returned with code %d and version %s\n", code, info.Version.Number)
// Getting the ES version number
esversion, err := client.ElasticsearchVersion("http://127.0.0.1:9200")
if err != nil {
// Handle error
panic(err)
}
fmt.Printf("Elasticsearch version %s\n", esversion)
}
func CreateElasticSearchConfig(uri *url.URL) (*ElasticSearchConfig, error) {
var esConfig ElasticSearchConfig
opts, err := url.ParseQuery(uri.RawQuery)
if err != nil {
return nil, fmt.Errorf("failed to parser url's query string: %s", err)
}
// set the index for es,the default value is "heapster"
esConfig.Index = ESIndex
if len(opts["index"]) > 0 {
esConfig.Index = opts["index"][0]
}
// If the ES cluster needs authentication, the username and secret
// should be set in sink config.Else, set the Authenticate flag to false
esConfig.NeedAuthen = false
if len(opts["esUserName"]) > 0 && len(opts["esUserSecret"]) > 0 {
esConfig.EsUserName = opts["esUserName"][0]
esConfig.NeedAuthen = true
}
// set the URL endpoints of the ES's nodes. Notice that
// when sniffing is enabled, these URLs are used to initially sniff the
// cluster on startup.
if len(opts["nodes"]) < 1 {
return nil, fmt.Errorf("There is no node assigned for connecting ES cluster")
}
esConfig.EsNodes = append(esConfig.EsNodes, opts["nodes"]...)
glog.V(2).Infof("configing elasticsearch sink with ES's nodes - %v", esConfig.EsNodes)
var client *(elastic.Client)
if esConfig.NeedAuthen == false {
client, err = elastic.NewClient(elastic.SetURL(esConfig.EsNodes...))
} else {
client, err = elastic.NewClient(elastic.SetBasicAuth(esConfig.EsUserName, esConfig.EsUserSecret), elastic.SetURL(esConfig.EsNodes...))
}
if err != nil {
return nil, fmt.Errorf("failed to create ElasticSearch client: %v", err)
}
esConfig.EsClient = client
glog.V(2).Infof("elasticsearch sink configure successfully")
return &esConfig, nil
}
func elasticInsert() {
// Create a client and connect to http://127.0.0.1:9200
client, err := elastic.NewClient(elastic.SetURL("http://127.0.0.1:9200"))
if err != nil {
// Handle error
panic(err)
}
// Use the IndexExists service to check if a specified index exists.
exists, err := client.IndexExists("products").Do()
if err != nil {
// Handle error
panic(err)
}
if !exists {
// Create a new index.
createIndex, err := client.CreateIndex("products").Do()
if err != nil {
// Handle error
panic(err)
}
if !createIndex.Acknowledged {
// Not acknowledged
}
}
var product = "name"
// Index a product (using JSON serialization)
put1, err := client.Index().
Index("products").
Type("product").
Id("1").
BodyJson(product).
Do()
if err != nil {
// Handle error
panic(err)
}
fmt.Printf("Indexed product %s to index %s, type %s\n", put1.Id, put1.Index, put1.Type)
//Get product with specified ID
get1, err := client.Get().
Index("products").
Type("product").
Id("1").
Do()
if err != nil {
// Handle error
panic(err)
}
if get1.Found {
fmt.Printf("Got document %s in version %d from index %s, type %s\n", get1.Id, get1.Version, get1.Index, get1.Type)
}
}
// InitClient sets up the elastic client. If the client has already been
// initalized it is a noop
func (e LogstashElasticHosts) InitClient() error {
if lsClient == nil {
var err error
lsClient, err = elastic.NewClient(elastic.SetURL(e...), elastic.SetMaxRetries(10))
if err != nil {
return err
}
}
return nil
}
func elasticDel() {
client, err := elastic.NewClient(elastic.SetURL("http://127.0.0.1:9200"))
// Delete the index again
_, err = client.DeleteIndex("products").Do()
if err != nil {
// Handle error
panic(err)
}
}
func ExampleClient_NewClient_cluster() {
// Obtain a client for an Elasticsearch cluster of two nodes,
// running on 10.0.1.1 and 10.0.1.2.
client, err := elastic.NewClient(elastic.SetURL("http://10.0.1.1:9200", "http://10.0.1.2:9200"))
if err != nil {
// Handle error
panic(err)
}
_ = client
}
func elasticQuery() {
client, err := elastic.NewClient(elastic.SetURL("http://127.0.0.1:9200"))
// Flush to make sure the documents got written.
_, err = client.Flush().Index("products").Do()
if err != nil {
panic(err)
}
// Search with a term query
termQuery := elastic.NewTermQuery("name", "annual_fee")
searchResult, err := client.Search().
Index("products"). // search in index "products"
Query(&termQuery). // specify the query
Sort("name", true). // sort by "name" field, ascending
From(0).Size(10). // take documents 0-9
Pretty(true). // pretty print request and response JSON
Do() // execute
if err != nil {
// Handle error
panic(err)
}
// searchResult is of type SearchResult and returns hits, suggestions,
// and all kinds of other information from Elasticsearch.
fmt.Printf("Query took %d milliseconds\n", searchResult.TookInMillis)
// // TotalHits is another convenience function that works even when something goes wrong.
fmt.Printf("Found a total of %d products\n", searchResult.TotalHits())
// Here's how you iterate through results with full control over each step.
if searchResult.Hits != nil {
fmt.Printf("Found a total of %d products\n", searchResult.Hits.TotalHits)
// Iterate through results
for _, hit := range searchResult.Hits.Hits {
// hit.Index contains the name of the index
// Deserialize hit.Source into a Tweet (could also be just a map[string]interface{}).
var p models.Product
err := json.Unmarshal(*hit.Source, &p)
if err != nil {
// Deserialization failed
}
// Work with product
fmt.Printf("The new product is %s: %s\n", p.Name, p.Description)
}
} else {
// No hits
fmt.Print("Found no products\n")
}
}
func (shell *Shell) refreshClient() {
url := fmt.Sprint("http://", shell.prompt.Host, ":", strconv.Itoa(shell.prompt.Port), "/")
util.LogInfo(fmt.Sprint("Connecting to ", url, "..."))
client, err := elastic.NewClient(
elastic.SetURL(url),
)
if err == nil {
shell.client = client
} else {
util.LogError(err.Error())
}
}
func ExampleClusterStateService() {
client, err := elastic.NewClient()
if err != nil {
panic(err)
}
// Get cluster state
res, err := client.ClusterState().Metric("version").Do()
if err != nil {
panic(err)
}
fmt.Printf("Cluster %q has version %d", res.ClusterName, res.Version)
}
func ExampleClient_NewClient_default() {
// Obtain a client to the Elasticsearch instance on http://localhost:9200.
client, err := elastic.NewClient()
if err != nil {
// Handle error
fmt.Printf("connection failed: %v\n", err)
} else {
fmt.Println("connected")
}
_ = client
// Output:
// connected
}
func ExampleGetTemplateService() {
client, err := elastic.NewClient()
if err != nil {
panic(err)
}
// Get template stored under "my-search-template"
resp, err := client.GetTemplate().Id("my-search-template").Do()
if err != nil {
panic(err)
}
fmt.Printf("search template is: %q\n", resp.Template)
}
func ExampleSearchResult() {
client, err := elastic.NewClient()
if err != nil {
panic(err)
}
// Do a search
searchResult, err := client.Search().Index("twitter").Query(elastic.NewMatchAllQuery()).Do()
if err != nil {
panic(err)
}
// searchResult is of type SearchResult and returns hits, suggestions,
// and all kinds of other information from Elasticsearch.
fmt.Printf("Query took %d milliseconds\n", searchResult.TookInMillis)
// Each is a utility function that iterates over hits in a search result.
// It makes sure you don't need to check for nil values in the response.
// However, it ignores errors in serialization. If you want full control
// over iterating the hits, see below.
var ttyp Tweet
for _, item := range searchResult.Each(reflect.TypeOf(ttyp)) {
t := item.(Tweet)
fmt.Printf("Tweet by %s: %s\n", t.User, t.Message)
}
fmt.Printf("Found a total of %d tweets\n", searchResult.TotalHits())
// Here's how you iterate hits with full control.
if searchResult.Hits != nil {
fmt.Printf("Found a total of %d tweets\n", searchResult.Hits.TotalHits)
// Iterate through results
for _, hit := range searchResult.Hits.Hits {
// hit.Index contains the name of the index
// Deserialize hit.Source into a Tweet (could also be just a map[string]interface{}).
var t Tweet
err := json.Unmarshal(*hit.Source, &t)
if err != nil {
// Deserialization failed
}
// Work with tweet
fmt.Printf("Tweet by %s: %s\n", t.User, t.Message)
}
} else {
// No hits
fmt.Print("Found no tweets\n")
}
}
func (f *Factory) New(uri *url.URL) bridge.RegistryAdapter {
urls := "http://127.0.0.1:9200"
if uri.Host != "" {
urls = "http://" + uri.Host
}
client, err := elasticapi.NewClient(elasticapi.SetURL(urls))
if err != nil {
log.Fatal("elastic: ", uri.Scheme)
}
return &ElasticAdapter{client: client}
}
func ExampleSearchService() {
// Get a client to the local Elasticsearch instance.
client, err := elastic.NewClient()
if err != nil {
// Handle error
panic(err)
}
// Search with a term query
termQuery := elastic.NewTermQuery("user", "olivere")
searchResult, err := client.Search().
Index("twitter"). // search in index "twitter"
Query(&termQuery). // specify the query
Sort("user", true). // sort by "user" field, ascending
From(0).Size(10). // take documents 0-9
Pretty(true). // pretty print request and response JSON
Do() // execute
if err != nil {
// Handle error
panic(err)
}
// searchResult is of type SearchResult and returns hits, suggestions,
// and all kinds of other information from Elasticsearch.
fmt.Printf("Query took %d milliseconds\n", searchResult.TookInMillis)
// Number of hits
if searchResult.Hits != nil {
fmt.Printf("Found a total of %d tweets\n", searchResult.Hits.TotalHits)
// Iterate through results
for _, hit := range searchResult.Hits.Hits {
// hit.Index contains the name of the index
// Deserialize hit.Source into a Tweet (could also be just a map[string]interface{}).
var t Tweet
err := json.Unmarshal(*hit.Source, &t)
if err != nil {
// Deserialization failed
}
// Work with tweet
fmt.Printf("Tweet by %s: %s\n", t.User, t.Message)
}
} else {
// No hits
fmt.Print("Found no tweets\n")
}
}
func ExampleDeleteTemplateService() {
client, err := elastic.NewClient()
if err != nil {
panic(err)
}
// Delete template
resp, err := client.DeleteTemplate().Id("my-search-template").Do()
if err != nil {
panic(err)
}
if resp != nil && resp.Found {
fmt.Println("template deleted")
}
}
func NewElasticHistory(host string, index string) *ElasticHistory {
var err error
history := new(ElasticHistory)
history.client, err = elastic.NewClient(elastic.SetURL(host))
history.incomingMessages = make(chan *Message)
history.index = strings.Replace(index, "#", "", -1)
if err != nil {
log.Panicf("Failed to connect to elasticsearch : %e", err)
}
go history.incomingLoop()
return history
}
func (a *Appbase) setupClient() error {
var err error
a.client, err = elastic.NewClient(
elastic.SetURL(a.uri.String()),
elastic.SetSniff(false),
)
if err != nil {
return err
}
a.bulkService = a.client.Bulk().Index(a.appName).Type(a.typename)
return nil
}
func ExampleClusterHealthService() {
client, err := elastic.NewClient()
if err != nil {
panic(err)
}
// Get cluster health
res, err := client.ClusterHealth().Index("twitter").Do()
if err != nil {
panic(err)
}
if res == nil {
panic(err)
}
fmt.Printf("Cluster status is %q\n", res.Status)
}
func ExampleClusterHealthService_WaitForGreen() {
client, err := elastic.NewClient()
if err != nil {
panic(err)
}
// Wait for status green
res, err := client.ClusterHealth().WaitForStatus("green").Timeout("15s").Do()
if err != nil {
panic(err)
}
if res.TimedOut {
fmt.Printf("time out waiting for cluster status %q\n", "green")
} else {
fmt.Printf("cluster status is %q\n", res.Status)
}
}
func ExampleDeleteIndexService() {
// Get a client to the local Elasticsearch instance.
client, err := elastic.NewClient()
if err != nil {
// Handle error
panic(err)
}
// Delete an index.
deleteIndex, err := client.DeleteIndex("twitter").Do()
if err != nil {
// Handle error
panic(err)
}
if !deleteIndex.Acknowledged {
// Not acknowledged
}
}
func ExampleIndexExistsService() {
// Get a client to the local Elasticsearch instance.
client, err := elastic.NewClient()
if err != nil {
// Handle error
panic(err)
}
// Use the IndexExists service to check if the index "twitter" exists.
exists, err := client.IndexExists("twitter").Do()
if err != nil {
// Handle error
panic(err)
}
if exists {
// ...
}
}
func processor(ic <-chan string) {
es, err := elastic.NewClient(elastic.SetURL("http://testbox02.chinacloudapp.cn:9200"), elastic.SetSniff(false))
if err != nil {
log.Println(err)
}
for item := range ic {
if item == "" {
break
}
var m media
if err = json.Unmarshal([]byte(item), &m); err == nil {
es_push(es, "fsmedia", "media", m)
}
}
if es != nil {
es.Flush().Do()
}
}
func TestCreateElasticSearchConfig(t *testing.T) {
url, err := url.Parse("?nodes=https://foo.com:20468&nodes=https://bar.com:20468&esUserName=test&esUserSecret=password&maxRetries=10&startupHealthcheckTimeout=30&sniff=false&healthCheck=false")
if err != nil {
t.Fatalf("Error when parsing URL: %s", err.Error())
}
config, err := CreateElasticSearchConfig(url)
if err != nil {
t.Fatalf("Error when creating config: %s", err.Error())
}
expectedClient, err := elastic.NewClient(
elastic.SetURL("https://foo.com:20468", "https://bar.com:20468"),
elastic.SetBasicAuth("test", "password"),
elastic.SetMaxRetries(10),
elastic.SetHealthcheckTimeoutStartup(30*time.Second),
elastic.SetSniff(false), elastic.SetHealthcheck(false))
if err != nil {
t.Fatalf("Error when creating client: %s", err.Error())
}
actualClientRefl := reflect.ValueOf(config.EsClient).Elem()
expectedClientRefl := reflect.ValueOf(expectedClient).Elem()
if actualClientRefl.FieldByName("basicAuthUsername").String() != expectedClientRefl.FieldByName("basicAuthUsername").String() {
t.Fatalf("basicAuthUsername is not equal")
}
if actualClientRefl.FieldByName("basicAuthUsername").String() != expectedClientRefl.FieldByName("basicAuthUsername").String() {
t.Fatalf("basicAuthUsername is not equal")
}
if actualClientRefl.FieldByName("maxRetries").Int() != expectedClientRefl.FieldByName("maxRetries").Int() {
t.Fatalf("maxRetries is not equal")
}
if actualClientRefl.FieldByName("healthcheckTimeoutStartup").Int() != expectedClientRefl.FieldByName("healthcheckTimeoutStartup").Int() {
t.Fatalf("healthcheckTimeoutStartup is not equal")
}
if actualClientRefl.FieldByName("snifferEnabled").Bool() != expectedClientRefl.FieldByName("snifferEnabled").Bool() {
t.Fatalf("snifferEnabled is not equal")
}
if actualClientRefl.FieldByName("healthcheckEnabled").Bool() != expectedClientRefl.FieldByName("healthcheckEnabled").Bool() {
t.Fatalf("healthcheckEnabled is not equal")
}
}
func ExampleAggregations() {
// Get a client to the local Elasticsearch instance.
client, err := elastic.NewClient()
if err != nil {
// Handle error
panic(err)
}
// Create an aggregation for users and a sub-aggregation for a date histogram of tweets (per year).
timeline := elastic.NewTermsAggregation().Field("user").Size(10).OrderByCountDesc()
histogram := elastic.NewDateHistogramAggregation().Field("created").Interval("year")
timeline = timeline.SubAggregation("history", histogram)
// Search with a term query
searchResult, err := client.Search().
Index("twitter"). // search in index "twitter"
Query(elastic.NewMatchAllQuery()). // return all results, but ...
SearchType("count"). // ... do not return hits, just the count
Aggregation("timeline", timeline). // add our aggregation to the query
Pretty(true). // pretty print request and response JSON
Do() // execute
if err != nil {
// Handle error
panic(err)
}
// Access "timeline" aggregate in search result.
agg, found := searchResult.Aggregations.Terms("timeline")
if !found {
log.Fatalf("we sould have a terms aggregation called %q", "timeline")
}
for _, userBucket := range agg.Buckets {
// Every bucket should have the user field as key.
user := userBucket.Key
// The sub-aggregation history should have the number of tweets per year.
histogram, found := userBucket.DateHistogram("history")
if found {
for _, year := range histogram.Buckets {
fmt.Printf("user %q has %d tweets in %q\n", user, year.DocCount, year.KeyAsString)
}
}
}
}
func ExampleClient_NewClient_manyOptions() {
// Obtain a client for an Elasticsearch cluster of two nodes,
// running on 10.0.1.1 and 10.0.1.2. Do not run the sniffer.
// Set the healthcheck interval to 10s. When requests fail,
// retry 5 times. Print error messages to os.Stderr and informational
// messages to os.Stdout.
client, err := elastic.NewClient(
elastic.SetURL("http://10.0.1.1:9200", "http://10.0.1.2:9200"),
elastic.SetSniff(false),
elastic.SetHealthcheckInterval(10*time.Second),
elastic.SetMaxRetries(5),
elastic.SetErrorLog(log.New(os.Stderr, "ELASTIC ", log.LstdFlags)),
elastic.SetInfoLog(log.New(os.Stdout, "", log.LstdFlags)))
if err != nil {
// Handle error
panic(err)
}
_ = client
}
func main() {
kingpin.Parse()
// Create a client
b, err := elastic.NewClient()
Check(err)
// Found the filesystem.
nfs := pathfs.NewPathNodeFs(&ElasticFs{
Index: *cliIndex,
Backend: b,
FileSystem: pathfs.NewDefaultFileSystem(),
}, nil)
s, _, err := nodefs.MountRoot(*cliDir, nfs.Root(), nil)
if err != nil {
log.Fatalf("Mount fail: %v\n", err)
}
s.Serve()
}
func ExampleWildcardQuery() {
// Get a client to the local Elasticsearch instance.
client, err := elastic.NewClient()
if err != nil {
// Handle error
panic(err)
}
// Define wildcard query
q := elastic.NewWildcardQuery("user", "oli*er?").Boost(1.2)
searchResult, err := client.Search().
Index("twitter"). // search in index "twitter"
Query(q). // use wildcard query defined above
Do() // execute
if err != nil {
// Handle error
panic(err)
}
_ = searchResult
}
