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 NewElasticConnTo(ip, port, indexName, configPath string) (EConn, error) {
log.Debug("")
var outerr error
clientInit.Do(func() {
logTimename := time.Now().Format(logNameTimeFormat)
fo, err := os.Create(os.TempDir() + "/docker-collector-out-" + logTimename + ".log")
if err != nil {
l.Fatalf("Error while creating a log file: %s", err)
}
fe, err := os.Create(os.TempDir() + "/docker-collector-error-" + logTimename + ".log")
if err != nil {
l.Fatalf("Error while creating a log file: %s", err)
}
// ft, err := os.Create(os.TempDir() + "/docker-collector-trace-" + logTimename + ".log")
// if err != nil {
// l.Fatalf("Error while creating a log file: %s", err)
// }
l.Printf("connecting to %s, %s", ip, port)
//Waiting for this to be solved: https://github.com/olivere/elastic/issues/124
wait := time.Second * 1
retries := 10
l.Printf("Trying to connect to ElasticSearch\n")
for {
ec.Client, err = elastic.NewClient(
elastic.SetURL("http://"+ip+":"+port),
elastic.SetMaxRetries(10),
elastic.SetHealthcheckTimeoutStartup(10*time.Second),
elastic.SetSniff(false),
elastic.SetErrorLog(l.New(fe, "", l.LstdFlags)),
elastic.SetInfoLog(l.New(fo, "", l.LstdFlags)),
//elastic.SetTraceLog(l.New(ft, "", l.LstdFlags)),
)
l.Printf("Attempt %d...\n", 11-retries)
if err == elastic.ErrNoClient {
retries--
if retries < 0 {
break
}
time.Sleep(wait)
wait += wait
}
if err == nil {
l.Printf("Success!")
break
}
}
ec.indexName = indexName
ec.configPath = configPath
outerr = err
})
return ec, outerr
}
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 (t *TestCase) setup() error {
var errorlogger *log.Logger
if t.errorlogfile != "" {
f, err := os.OpenFile(t.errorlogfile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0664)
if err != nil {
return err
}
errorlogger = log.New(f, "", log.Ltime|log.Lmicroseconds|log.Lshortfile)
}
var infologger *log.Logger
if t.infologfile != "" {
f, err := os.OpenFile(t.infologfile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0664)
if err != nil {
return err
}
infologger = log.New(f, "", log.LstdFlags)
}
// Trace request and response details like this
var tracelogger *log.Logger
if t.tracelogfile != "" {
f, err := os.OpenFile(t.tracelogfile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0664)
if err != nil {
return err
}
tracelogger = log.New(f, "", log.LstdFlags)
}
client, err := elastic.NewClient(
elastic.SetURL(t.nodes...),
elastic.SetErrorLog(errorlogger),
elastic.SetInfoLog(infologger),
elastic.SetTraceLog(tracelogger),
elastic.SetMaxRetries(t.maxRetries),
elastic.SetSniff(t.sniff),
elastic.SetSnifferInterval(t.snifferInterval),
elastic.SetHealthcheck(t.healthcheck),
elastic.SetHealthcheckInterval(t.healthcheckInterval))
if err != nil {
// Handle error
return err
}
t.client = client
// Use the IndexExists service to check if a specified index exists.
exists, err := t.client.IndexExists(t.index).Do()
if err != nil {
return err
}
if exists {
deleteIndex, err := t.client.DeleteIndex(t.index).Do()
if err != nil {
return err
}
if !deleteIndex.Acknowledged {
return errors.New("delete index not acknowledged")
}
}
// Create a new index.
createIndex, err := t.client.CreateIndex(t.index).Do()
if err != nil {
return err
}
if !createIndex.Acknowledged {
return errors.New("create index not acknowledged")
}
// Index a tweet (using JSON serialization)
tweet1 := Tweet{User: "******", Message: "Take Five", Retweets: 0}
_, err = t.client.Index().
Index(t.index).
Type("tweet").
Id("1").
BodyJson(tweet1).
Do()
if err != nil {
return err
}
// Index a second tweet (by string)
tweet2 := `{"user" : "olivere", "message" : "It's a Raggy Waltz"}`
_, err = t.client.Index().
Index(t.index).
Type("tweet").
Id("2").
BodyString(tweet2).
Do()
if err != nil {
return err
}
// Flush to make sure the documents got written.
_, err = t.client.Flush().Index(t.index).Do()
if err != nil {
return err
}
return nil
}