Update the Get Started tutorial for Go connector

doc/code_snippets/snippets/connectors/go/README.md

@@ -0,0 +1,14 @@
+# Go
+
+A sample application containing requests from the [Connecting from Go](https://www.tarantool.io/en/doc/latest/how-to/getting_started_go) tutorial.
+
+
+## Running
+
+Before running this sample, start an application that allows remote connections to a sample database: [sample_db](../instances.enabled/sample_db).
+
+Then, start this sample by executing the following command in the `go` directory:
+
+```
+$ go run .
+```

doc/code_snippets/snippets/connectors/go/go.mod

@@ -0,0 +1,12 @@
+module example/hello
+
+go 1.22.3
+
+require (
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/shopspring/decimal v1.3.1 // indirect
+	github.com/tarantool/go-iproto v1.0.0 // indirect
+	github.com/tarantool/go-tarantool/v2 v2.1.0 // indirect
+	github.com/vmihailenco/msgpack/v5 v5.3.5 // indirect
+	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
+)

doc/code_snippets/snippets/connectors/go/go.sum

@@ -0,0 +1,18 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/shopspring/decimal v1.3.1 h1:2Usl1nmF/WZucqkFZhnfFYxxxu8LG21F6nPQBE5gKV8=
+github.com/shopspring/decimal v1.3.1/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/tarantool/go-iproto v1.0.0 h1:quC4hdFhCuFYaCqOFgUxH2foRkhAy+TlEy7gQLhdVjw=
+github.com/tarantool/go-iproto v1.0.0/go.mod h1:LNCtdyZxojUed8SbOiYHoc3v9NvaZTB7p96hUySMlIo=
+github.com/tarantool/go-tarantool/v2 v2.1.0 h1:IY33WoS8Kqb+TxNnKbzu/7yVkiCNZGhbG5Gw0/tMfSk=
+github.com/tarantool/go-tarantool/v2 v2.1.0/go.mod h1:cpjGW5FHAXIMf0PKZte70pMOeadw1MA/hrDv1LblWk4=
+github.com/vmihailenco/msgpack/v5 v5.3.5 h1:5gO0H1iULLWGhs2H5tbAHIZTV8/cYafcFOr9znI5mJU=
+github.com/vmihailenco/msgpack/v5 v5.3.5/go.mod h1:7xyJ9e+0+9SaZT0Wt1RGleJXzli6Q/V5KbhBonMG9jc=
+github.com/vmihailenco/tagparser/v2 v2.0.0 h1:y09buUbR+b5aycVFQs/g70pqKVZNBmxwAhO7/IwNM9g=
+github.com/vmihailenco/tagparser/v2 v2.0.0/go.mod h1:Wri+At7QHww0WTrCBeu4J6bNtoV6mEfg5OIWRZA9qds=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

doc/code_snippets/snippets/connectors/go/hello.go

@@ -0,0 +1,134 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"github.com/tarantool/go-tarantool/v2"
+	_ "github.com/tarantool/go-tarantool/v2/datetime"
+	_ "github.com/tarantool/go-tarantool/v2/decimal"
+	_ "github.com/tarantool/go-tarantool/v2/uuid"
+	"time"
+)
+
+func main() {
+	// Connect to the database
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
+	defer cancel()
+	dialer := tarantool.NetDialer{
+		Address:  "127.0.0.1:3301",
+		User:     "sampleuser",
+		Password: "123456",
+	}
+	opts := tarantool.Opts{
+		Timeout: time.Second,
+	}
+
+	conn, err := tarantool.Connect(ctx, dialer, opts)
+	if err != nil {
+		fmt.Println("Connection refused:", err)
+		return
+	}
+
+	// Interact with the database
+	// ...
+	// Insert data
+	tuples := [][]interface{}{
+		{1, "Roxette", 1986},
+		{2, "Scorpions", 1965},
+		{3, "Ace of Base", 1987},
+		{4, "The Beatles", 1960},
+	}
+	var futures []*tarantool.Future
+	for _, tuple := range tuples {
+		request := tarantool.NewInsertRequest("bands").Tuple(tuple)
+		futures = append(futures, conn.Do(request))
+	}
+	fmt.Println("Inserted tuples:")
+	for _, future := range futures {
+		result, err := future.Get()
+		if err != nil {
+			fmt.Println("Got an error:", err)
+		} else {
+			fmt.Println(result)
+		}
+	}
+
+	// Select by primary key
+	data, err := conn.Do(
+		tarantool.NewSelectRequest("bands").
+			Limit(10).
+			Iterator(tarantool.IterEq).
+			Key([]interface{}{uint(1)}),
+	).Get()
+	if err != nil {
+		fmt.Println("Got an error:", err)
+	}
+	fmt.Println("Tuple selected by the primary key value:", data)
+
+	// Select by secondary key
+	data, err = conn.Do(
+		tarantool.NewSelectRequest("bands").
+			Index("band").
+			Limit(10).
+			Iterator(tarantool.IterEq).
+			Key([]interface{}{"The Beatles"}),
+	).Get()
+	if err != nil {
+		fmt.Println("Got an error:", err)
+	}
+	fmt.Println("Tuple selected by the secondary key value:", data)
+
+	// Update
+	data, err = conn.Do(
+		tarantool.NewUpdateRequest("bands").
+			Key(tarantool.IntKey{2}).
+			Operations(tarantool.NewOperations().Assign(1, "Pink Floyd")),
+	).Get()
+	if err != nil {
+		fmt.Println("Got an error:", err)
+	}
+	fmt.Println("Updated tuple:", data)
+
+	// Upsert
+	data, err = conn.Do(
+		tarantool.NewUpsertRequest("bands").
+			Tuple([]interface{}{uint(5), "The Rolling Stones", 1962}).
+			Operations(tarantool.NewOperations().Assign(1, "The Doors")),
+	).Get()
+	if err != nil {
+		fmt.Println("Got an error:", err)
+	}
+
+	// Replace
+	data, err = conn.Do(
+		tarantool.NewReplaceRequest("bands").
+			Tuple([]interface{}{1, "Queen", 1970}),
+	).Get()
+	if err != nil {
+		fmt.Println("Got an error:", err)
+	}
+	fmt.Println("Replaced tuple:", data)
+
+	// Delete
+	data, err = conn.Do(
+		tarantool.NewDeleteRequest("bands").
+			Key([]interface{}{uint(5)}),
+	).Get()
+	if err != nil {
+		fmt.Println("Got an error:", err)
+	}
+	fmt.Println("Deleted tuple:", data)
+
+	// Call
+	data, err = conn.Do(
+		tarantool.NewCallRequest("get_bands_older_than").Args([]interface{}{1966}),
+	).Get()
+	if err != nil {
+		fmt.Println("Got an error:", err)
+	}
+	fmt.Println("Stored procedure result:", data)
+
+	// Close connection
+	conn.CloseGraceful()
+	fmt.Println("Connection is closed")
+}