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| package main
import (
"context"
"fmt"
"github.com/elastic/go-elasticsearch/v8/typedapi/core/search"
"github.com/elastic/go-elasticsearch/v8/typedapi/some"
"github.com/elastic/go-elasticsearch/v8/typedapi/types"
"time"
"github.com/elastic/go-elasticsearch/v8"
"github.com/spf13/cast"
)
type Review struct {
ID int64 `json:"id"`
UserID int64 `json:"userID"`
Score uint8 `json:"score"`
Content string `json:"content"`
Tags []Tag `json:"tags"`
Status int `json:"status"`
PublishTime time.Time `json:"publishTime"`
}
type Tag struct {
Code int `json:"code"`
Title string `json:"title"`
}
var cfg = elasticsearch.Config{
Addresses: []string{
"http://localhost:9200",
},
}
func createClient() *elasticsearch.TypedClient {
client, err := elasticsearch.NewTypedClient(cfg)
if err != nil {
fmt.Printf("elasticsearch.NewTypedClient failed,err:", err)
return nil
}
return client
}
func createIndex(client *elasticsearch.TypedClient) {
resp, err := client.Indices.Create("my-review-1").Do(context.Background())
if err != nil {
fmt.Printf("create index failed, err:%v\n", err)
return
}
fmt.Printf("index:%#v\n", resp.Index)
}
func indexDocument(client *elasticsearch.TypedClient) {
d1 := Review{
ID: 1,
UserID: 78123,
Score: 4,
Content: "这是一个好评",
Tags: []Tag{
{
Code: 100,
Title: "好评",
}, {
Code: 1100,
Title: "物超所值",
}, {
Code: 9000,
Title: "有图",
},
},
Status: 2,
PublishTime: time.Now(),
}
resp, err := client.Index("my-review-1").
Id(cast.ToString(d1.ID)).Document(d1).
Do(context.Background())
if err != nil {
fmt.Printf("client.Index failed ,err:%v", err)
return
}
fmt.Printf("result:%#v\n", resp.Result)
}
func getDocument(client *elasticsearch.TypedClient, id string) {
resp, err := client.Get("my-review-id", id).Do(context.Background())
if err != nil {
fmt.Printf("get document by id failed,err:%v\n", err)
}
fmt.Printf("fileds:%s\n", resp.Fields)
}
func searchDocument(client *elasticsearch.TypedClient) {
client.Search().
Index("my-review-1").
Query(&types.Query{
MatchPhrase: map[string]types.MatchPhraseQuery{
"content": {Query: "好评"},
},
}).
Do(context.Background())
}
func aggregationDemo(client *elasticsearch.TypedClient) {
avgScoreAgg, err := client.Search().
Index("my-review-1").
Request(
&search.Request{
Size: some.Int(0),
Aggregations: map[string]types.Aggregations{
"avg_score": {
Avg: &types.AverageAggregation{
Field: some.String("score"),
},
},
},
},
).Do(context.Background())
if err != nil {
fmt.Printf("aggregation failed, err:%v\n", err)
return
}
fmt.Printf("avgScore:%#v\n", avgScoreAgg.Aggregations["avg_score"])
}
func updateDocument(client *elasticsearch.TypedClient) {
d1 := Review{
ID: 1,
UserID: 147982601,
Score: 5,
Content: "这是一个修改后的好评！",
Tags: []Tag{
{1000, "好评"},
{9000, "有图"},
},
Status: 2,
PublishTime: time.Now(),
}
resp, err := client.Update("my-review-1", "1").Doc(d1).Do(context.Background())
if err != nil {
fmt.Printf("update document failed, err:%v\n", err)
return
}
fmt.Printf("result:%v\n", resp.Result)
}
func deleteDocument(client *elasticsearch.TypedClient) {
resp, err := client.Delete("my-review-1", "1").Do(context.Background())
if err != nil {
fmt.Printf("delete document failed, err:%v\n", err)
return
}
fmt.Printf("result:%v\n", resp.Result)
}
func deleteIndex(client *elasticsearch.TypedClient) {
resp, err := client.Indices.
Delete("my-review-1").
Do(context.Background())
if err != nil {
fmt.Printf("delete document failed, err:%v\n", err)
return
}
fmt.Printf("Acknowledged:%v\n", resp.Acknowledged)
}
|