flipt_go_sdk_feature_flag_evaluation_quickstart.go

1package main
2
3import (
4	"context"
5	"fmt"
6	"log"
7
8	"go.flipt.io/flipt/sdk/go"
9	"go.flipt.io/flipt/rpc/flipt"
10)
11
12func main() {
13	// Initialize the Flipt client
14	// Default address is http://localhost:8080
15	client, err := sdk.NewClient(sdk.WithAddress("http://localhost:8080"))
16	if err != nil {
17		log.Fatalf("could not initialize flipt client: %v", err)
18	}
19
20	// Evaluate a variant flag
21	variant, err := client.Flipt().Evaluate(context.Background(), &flipt.EvaluationRequest{
22		NamespaceKey: "default",
23		FlagKey:      "my-feature-flag",
24		EntityId:     "user-123",
25		Context: map[string]string{
26			"plan": "premium",
27		},
28	})
29
30	if err != nil {
31		log.Fatalf("could not evaluate flag: %v", err)
32	}
33
34	if variant.Match {
35		fmt.Printf("Flag is enabled! Variant: %s\n", variant.VariantKey)
36	} else {
37		fmt.Println("Flag is disabled or no match found.")
38	}
39}