feat(loadbalancer): set custom user-agent header for STACKIT API calls (#843)

relates to STACKITTPR-184

stackit/internal/services/loadbalancer/loadbalancer/datasource.go

@@ -5,6 +5,9 @@ import (
 	"fmt"
 	"net/http"
 
+	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/conversion"
+	loadbalancerUtils "github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/loadbalancer/utils"
+
 	"github.com/hashicorp/terraform-plugin-framework-validators/listvalidator"
 	"github.com/hashicorp/terraform-plugin-framework-validators/setvalidator"
 	"github.com/hashicorp/terraform-plugin-framework-validators/stringvalidator"
@@ -17,7 +20,6 @@ import (
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/validate"
 
 	"github.com/hashicorp/terraform-plugin-framework/datasource/schema"
-	"github.com/stackitcloud/stackit-sdk-go/core/config"
 	"github.com/stackitcloud/stackit-sdk-go/services/loadbalancer"
 )
 
@@ -44,36 +46,16 @@ func (r *loadBalancerDataSource) Metadata(_ context.Context, req datasource.Meta
 
 // Configure adds the provider configured client to the data source.
 func (r *loadBalancerDataSource) Configure(ctx context.Context, req datasource.ConfigureRequest, resp *datasource.ConfigureResponse) {
-	// Prevent panic if the provider has not been configured.
-	if req.ProviderData == nil {
-		return
-	}
-
 	var ok bool
-	r.providerData, ok = req.ProviderData.(core.ProviderData)
+	r.providerData, ok = conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
 	if !ok {
-		core.LogAndAddError(ctx, &resp.Diagnostics, "Error configuring API client", fmt.Sprintf("Expected configure type stackit.ProviderData, got %T", req.ProviderData))
 		return
 	}
 
-	var apiClient *loadbalancer.APIClient
+	apiClient := loadbalancerUtils.ConfigureClient(ctx, &r.providerData, &resp.Diagnostics)
-	var err error
+	if resp.Diagnostics.HasError() {
-	if r.providerData.LoadBalancerCustomEndpoint != "" {
-		apiClient, err = loadbalancer.NewAPIClient(
-			config.WithCustomAuth(r.providerData.RoundTripper),
-			config.WithEndpoint(r.providerData.LoadBalancerCustomEndpoint),
-		)
-	} else {
-		apiClient, err = loadbalancer.NewAPIClient(
-			config.WithCustomAuth(r.providerData.RoundTripper),
-		)
-	}
-
-	if err != nil {
-		core.LogAndAddError(ctx, &resp.Diagnostics, "Error configuring API client", fmt.Sprintf("Configuring client: %v. This is an error related to the provider configuration, not to the data source configuration", err))
 		return
 	}
-
 	r.client = apiClient
 	tflog.Info(ctx, "Load balancer client configured")
 }

stackit/internal/services/loadbalancer/loadbalancer/resource.go

@@ -7,6 +7,8 @@ import (
 	"strings"
 	"time"
 
+	loadbalancerUtils "github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/loadbalancer/utils"
+
 	"github.com/google/uuid"
 	"github.com/hashicorp/terraform-plugin-framework-validators/listvalidator"
 	"github.com/hashicorp/terraform-plugin-framework-validators/setvalidator"
@@ -26,7 +28,6 @@ import (
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/hashicorp/terraform-plugin-framework/types/basetypes"
 	"github.com/hashicorp/terraform-plugin-log/tflog"
-	"github.com/stackitcloud/stackit-sdk-go/core/config"
 	"github.com/stackitcloud/stackit-sdk-go/core/oapierror"
 	sdkUtils "github.com/stackitcloud/stackit-sdk-go/core/utils"
 	"github.com/stackitcloud/stackit-sdk-go/services/loadbalancer"
@@ -238,37 +239,16 @@ func (r *loadBalancerResource) ModifyPlan(ctx context.Context, req resource.Modi
 
 // Configure adds the provider configured client to the resource.
 func (r *loadBalancerResource) Configure(ctx context.Context, req resource.ConfigureRequest, resp *resource.ConfigureResponse) {
-	// Prevent panic if the provider has not been configured.
-	if req.ProviderData == nil {
-		return
-	}
-
 	var ok bool
-	r.providerData, ok = req.ProviderData.(core.ProviderData)
+	r.providerData, ok = conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
 	if !ok {
-		core.LogAndAddError(ctx, &resp.Diagnostics, "Error configuring API client", fmt.Sprintf("Expected configure type stackit.ProviderData, got %T", req.ProviderData))
 		return
 	}
 
-	var apiClient *loadbalancer.APIClient
+	apiClient := loadbalancerUtils.ConfigureClient(ctx, &r.providerData, &resp.Diagnostics)
-	var err error
+	if resp.Diagnostics.HasError() {
-	if r.providerData.LoadBalancerCustomEndpoint != "" {
-		ctx = tflog.SetField(ctx, "loadbalancer_custom_endpoint", r.providerData.LoadBalancerCustomEndpoint)
-		apiClient, err = loadbalancer.NewAPIClient(
-			config.WithCustomAuth(r.providerData.RoundTripper),
-			config.WithEndpoint(r.providerData.LoadBalancerCustomEndpoint),
-		)
-	} else {
-		apiClient, err = loadbalancer.NewAPIClient(
-			config.WithCustomAuth(r.providerData.RoundTripper),
-		)
-	}
-
-	if err != nil {
-		core.LogAndAddError(ctx, &resp.Diagnostics, "Error configuring API client", fmt.Sprintf("Configuring client: %v. This is an error related to the provider configuration, not to the resource configuration", err))
 		return
 	}
-
 	r.client = apiClient
 	tflog.Info(ctx, "Load Balancer client configured")
 }

stackit/internal/services/loadbalancer/observability-credential/resource.go

@@ -6,6 +6,8 @@ import (
 	"net/http"
 	"strings"
 
+	loadbalancerUtils "github.com/stackitcloud/terraform-provider-stackit/stackit/internal/services/loadbalancer/utils"
+
 	"github.com/google/uuid"
 	"github.com/hashicorp/terraform-plugin-framework/path"
 	"github.com/hashicorp/terraform-plugin-framework/resource"
@@ -15,7 +17,6 @@ import (
 	"github.com/hashicorp/terraform-plugin-framework/schema/validator"
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/hashicorp/terraform-plugin-log/tflog"
-	"github.com/stackitcloud/stackit-sdk-go/core/config"
 	"github.com/stackitcloud/stackit-sdk-go/core/oapierror"
 	"github.com/stackitcloud/stackit-sdk-go/services/loadbalancer"
 	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/conversion"
@@ -90,37 +91,16 @@ func (r *observabilityCredentialResource) ModifyPlan(ctx context.Context, req re
 
 // Configure adds the provider configured client to the resource.
 func (r *observabilityCredentialResource) Configure(ctx context.Context, req resource.ConfigureRequest, resp *resource.ConfigureResponse) {
-	// Prevent panic if the provider has not been configured.
-	if req.ProviderData == nil {
-		return
-	}
-
 	var ok bool
-	r.providerData, ok = req.ProviderData.(core.ProviderData)
+	r.providerData, ok = conversion.ParseProviderData(ctx, req.ProviderData, &resp.Diagnostics)
 	if !ok {
-		core.LogAndAddError(ctx, &resp.Diagnostics, "Error configuring API client", fmt.Sprintf("Expected configure type stackit.ProviderData, got %T", req.ProviderData))
 		return
 	}
 
-	var apiClient *loadbalancer.APIClient
+	apiClient := loadbalancerUtils.ConfigureClient(ctx, &r.providerData, &resp.Diagnostics)
-	var err error
+	if resp.Diagnostics.HasError() {
-	if r.providerData.LoadBalancerCustomEndpoint != "" {
-		ctx = tflog.SetField(ctx, "loadbalancer_custom_endpoint", r.providerData.LoadBalancerCustomEndpoint)
-		apiClient, err = loadbalancer.NewAPIClient(
-			config.WithCustomAuth(r.providerData.RoundTripper),
-			config.WithEndpoint(r.providerData.LoadBalancerCustomEndpoint),
-		)
-	} else {
-		apiClient, err = loadbalancer.NewAPIClient(
-			config.WithCustomAuth(r.providerData.RoundTripper),
-		)
-	}
-
-	if err != nil {
-		core.LogAndAddError(ctx, &resp.Diagnostics, "Error configuring API client", fmt.Sprintf("Configuring client: %v. This is an error related to the provider configuration, not to the resource configuration", err))
 		return
 	}
-
 	r.client = apiClient
 	tflog.Info(ctx, "Load Balancer client configured")
 }

stackit/internal/services/loadbalancer/utils/util.go

@@ -0,0 +1,30 @@
+package utils
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/stackitcloud/stackit-sdk-go/services/loadbalancer"
+
+	"github.com/hashicorp/terraform-plugin-framework/diag"
+	"github.com/stackitcloud/stackit-sdk-go/core/config"
+	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/core"
+	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/utils"
+)
+
+func ConfigureClient(ctx context.Context, providerData *core.ProviderData, diags *diag.Diagnostics) *loadbalancer.APIClient {
+	apiClientConfigOptions := []config.ConfigurationOption{
+		config.WithCustomAuth(providerData.RoundTripper),
+		utils.UserAgentConfigOption(providerData.Version),
+	}
+	if providerData.LoadBalancerCustomEndpoint != "" {
+		apiClientConfigOptions = append(apiClientConfigOptions, config.WithEndpoint(providerData.LoadBalancerCustomEndpoint))
+	}
+	apiClient, err := loadbalancer.NewAPIClient(apiClientConfigOptions...)
+	if err != nil {
+		core.LogAndAddError(ctx, diags, "Error configuring API client", fmt.Sprintf("Configuring client: %v. This is an error related to the provider configuration, not to the resource configuration", err))
+		return nil
+	}
+
+	return apiClient
+}

stackit/internal/services/loadbalancer/utils/util_test.go

@@ -0,0 +1,93 @@
+package utils
+
+import (
+	"context"
+	"os"
+	"reflect"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-framework/diag"
+	sdkClients "github.com/stackitcloud/stackit-sdk-go/core/clients"
+	"github.com/stackitcloud/stackit-sdk-go/core/config"
+	"github.com/stackitcloud/stackit-sdk-go/services/loadbalancer"
+	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/core"
+	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/utils"
+)
+
+const (
+	testVersion        = "1.2.3"
+	testCustomEndpoint = "https://loadbalancer-custom-endpoint.api.stackit.cloud"
+)
+
+func TestConfigureClient(t *testing.T) {
+	/* mock authentication by setting service account token env variable */
+	os.Clearenv()
+	err := os.Setenv(sdkClients.ServiceAccountToken, "mock-val")
+	if err != nil {
+		t.Errorf("error setting env variable: %v", err)
+	}
+
+	type args struct {
+		providerData *core.ProviderData
+	}
+	tests := []struct {
+		name     string
+		args     args
+		wantErr  bool
+		expected *loadbalancer.APIClient
+	}{
+		{
+			name: "default endpoint",
+			args: args{
+				providerData: &core.ProviderData{
+					Version: testVersion,
+				},
+			},
+			expected: func() *loadbalancer.APIClient {
+				apiClient, err := loadbalancer.NewAPIClient(
+					utils.UserAgentConfigOption(testVersion),
+				)
+				if err != nil {
+					t.Errorf("error configuring client: %v", err)
+				}
+				return apiClient
+			}(),
+			wantErr: false,
+		},
+		{
+			name: "custom endpoint",
+			args: args{
+				providerData: &core.ProviderData{
+					Version:                    testVersion,
+					LoadBalancerCustomEndpoint: testCustomEndpoint,
+				},
+			},
+			expected: func() *loadbalancer.APIClient {
+				apiClient, err := loadbalancer.NewAPIClient(
+					utils.UserAgentConfigOption(testVersion),
+					config.WithEndpoint(testCustomEndpoint),
+				)
+				if err != nil {
+					t.Errorf("error configuring client: %v", err)
+				}
+				return apiClient
+			}(),
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			ctx := context.Background()
+			diags := diag.Diagnostics{}
+
+			actual := ConfigureClient(ctx, tt.args.providerData, &diags)
+			if diags.HasError() != tt.wantErr {
+				t.Errorf("ConfigureClient() error = %v, want %v", diags.HasError(), tt.wantErr)
+			}
+
+			if !reflect.DeepEqual(actual, tt.expected) {
+				t.Errorf("ConfigureClient() = %v, want %v", actual, tt.expected)
+			}
+		})
+	}
+}