**New Data Source**: azurerm_container_app_environment_storage

internal/services/containerapps/container_app_environment_storage_data_source.go

@@ -0,0 +1,141 @@
+// Copyright IBM Corp. 2014, 2025
+// SPDX-License-Identifier: MPL-2.0
+
+package containerapps
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/hashicorp/go-azure-helpers/lang/pointer"
+	"github.com/hashicorp/go-azure-helpers/lang/response"
+	"github.com/hashicorp/go-azure-sdk/resource-manager/containerapps/2025-07-01/managedenvironmentsstorages"
+	"github.com/hashicorp/terraform-provider-azurerm/internal/sdk"
+	"github.com/hashicorp/terraform-provider-azurerm/internal/services/containerapps/validate"
+	"github.com/hashicorp/terraform-provider-azurerm/internal/tf/pluginsdk"
+)
+
+type ContainerAppEnvironmentStorageDataSource struct{}
+
+type ContainerAppEnvironmentStorageDataSourceModel struct {
+	Name                      string `tfschema:"name"`
+	ContainerAppEnvironmentId string `tfschema:"container_app_environment_id"`
+
+	AccountName  string `tfschema:"account_name"`
+	ShareName    string `tfschema:"share_name"`
+	AccessMode   string `tfschema:"access_mode"`
+	NfsServerUrl string `tfschema:"nfs_server_url"`
+}
+
+var _ sdk.DataSource = ContainerAppEnvironmentStorageDataSource{}
+
+func (r ContainerAppEnvironmentStorageDataSource) ModelObject() interface{} {
+	return &ContainerAppEnvironmentStorageDataSourceModel{}
+}
+
+func (r ContainerAppEnvironmentStorageDataSource) ResourceType() string {
+	return "azurerm_container_app_environment_storage"
+}
+
+func (r ContainerAppEnvironmentStorageDataSource) Arguments() map[string]*pluginsdk.Schema {
+	return map[string]*pluginsdk.Schema{
+		"name": {
+			Type:         pluginsdk.TypeString,
+			Required:     true,
+			ForceNew:     true,
+			ValidateFunc: validate.ManagedEnvironmentStorageName,
+			Description:  "The name for this Container App Environment Storage.",
+		},
+
+		"container_app_environment_id": {
+			Type:         pluginsdk.TypeString,
+			Required:     true,
+			ForceNew:     true,
+			ValidateFunc: managedenvironmentsstorages.ValidateManagedEnvironmentID,
+			Description:  "The ID of the Container App Environment to which this storage belongs.",
+		},
+	}
+}
+
+func (r ContainerAppEnvironmentStorageDataSource) Attributes() map[string]*pluginsdk.Schema {
+	return map[string]*pluginsdk.Schema{
+		"account_name": {
+			Type:        pluginsdk.TypeString,
+			Computed:    true,
+			Description: "The Azure Storage Account in which the Share is located.",
+		},
+
+		"share_name": {
+			Type:        pluginsdk.TypeString,
+			Computed:    true,
+			Description: "The name of the Azure Storage Share.",
+		},
+
+		"access_mode": {
+			Type:        pluginsdk.TypeString,
+			Computed:    true,
+			Description: "The access mode to connect this storage to the Container App.",
+		},
+
+		"nfs_server_url": {
+			Type:        pluginsdk.TypeString,
+			Computed:    true,
+			Description: "The NFS server URL for the Azure File Share.",
+		},
+	}
+}
+
+func (r ContainerAppEnvironmentStorageDataSource) Read() sdk.ResourceFunc {
+	return sdk.ResourceFunc{
+		Timeout: 5 * time.Minute,
+		Func: func(ctx context.Context, metadata sdk.ResourceMetaData) error {
+			client := metadata.Client.ContainerApps.StorageClient
+
+			var state ContainerAppEnvironmentStorageDataSourceModel
+			if err := metadata.Decode(&state); err != nil {
+				return err
+			}
+
+			envId, err := managedenvironmentsstorages.ParseManagedEnvironmentID(state.ContainerAppEnvironmentId)
+			if err != nil {
+				return err
+			}
+
+			id := managedenvironmentsstorages.NewStorageID(envId.SubscriptionId, envId.ResourceGroupName, envId.ManagedEnvironmentName, state.Name)
+
+			existing, err := client.Get(ctx, id)
+			if err != nil {
+				if response.WasNotFound(existing.HttpResponse) {
+					return fmt.Errorf("%s was not found", id)
+				}
+				return fmt.Errorf("reading %s: %+v", id, err)
+			}
+
+			state.Name = id.StorageName
+			state.ContainerAppEnvironmentId = envId.ID()
+
+			if model := existing.Model; model != nil {
+				if props := model.Properties; props != nil {
+					if azureFile := props.AzureFile; azureFile != nil {
+						state.AccountName = pointer.From(azureFile.AccountName)
+						if azureFile.AccessMode != nil {
+							state.AccessMode = string(*azureFile.AccessMode)
+						}
+						state.ShareName = pointer.From(azureFile.ShareName)
+					} else if nfsAzureFile := props.NfsAzureFile; nfsAzureFile != nil {
+						state.NfsServerUrl = pointer.From(nfsAzureFile.Server)
+						if nfsAzureFile.AccessMode != nil {
+							state.AccessMode = string(*nfsAzureFile.AccessMode)
+						}
+						state.ShareName = pointer.From(nfsAzureFile.ShareName)
+					}
+				}
+			}
+
+			metadata.SetID(id)
+
+			return metadata.Encode(&state)
+		},
+	}
+}

internal/services/containerapps/container_app_environment_storage_data_source_test.go

@@ -0,0 +1,41 @@
+// Copyright IBM Corp. 2014, 2025
+// SPDX-License-Identifier: MPL-2.0
+
+package containerapps_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform-provider-azurerm/internal/acceptance"
+	"github.com/hashicorp/terraform-provider-azurerm/internal/acceptance/check"
+)
+
+type ContainerAppEnvironmentStorageDataSource struct{}
+
+func TestAccContainerAppEnvironmentStorageDataSource_basic(t *testing.T) {
+	data := acceptance.BuildTestData(t, "data.azurerm_container_app_environment_storage", "test")
+	r := ContainerAppEnvironmentStorageDataSource{}
+
+	data.DataSourceTest(t, []acceptance.TestStep{
+		{
+			Config: r.basic(data),
+			Check: acceptance.ComposeTestCheckFunc(
+				check.That(data.ResourceName).Key("account_name").IsSet(),
+				check.That(data.ResourceName).Key("share_name").IsSet(),
+				check.That(data.ResourceName).Key("access_mode").IsSet(),
+			),
+		},
+	})
+}
+
+func (d ContainerAppEnvironmentStorageDataSource) basic(data acceptance.TestData) string {
+	return fmt.Sprintf(`
+%s
+
+data "azurerm_container_app_environment_storage" "test" {
+  name                         = azurerm_container_app_environment_storage.test.name
+  container_app_environment_id = azurerm_container_app_environment_storage.test.container_app_environment_id
+}
+`, ContainerAppEnvironmentStorageResource{}.basic(data))
+}

internal/services/containerapps/registration.go

@@ -35,6 +35,7 @@ func (r Registration) DataSources() []sdk.DataSource {
 		ContainerAppDataSource{},
 		ContainerAppEnvironmentDataSource{},
 		ContainerAppEnvironmentCertificateDataSource{},
+		ContainerAppEnvironmentStorageDataSource{},
 	}
 }
 

website/docs/d/container_app_environment_storage.html.markdown

@@ -0,0 +1,59 @@
+---
+subcategory: "Container Apps"
+layout: "azurerm"
+page_title: "Azure Resource Manager: azurerm_container_app_environment_storage"
+description: |-
+  Gets information about a Container App Environment Storage.
+---
+
+# Data Source: azurerm_container_app_environment_storage
+
+Use this data source to access information about an existing Container App Environment Storage.
+
+## Example Usage
+
+```hcl
+data "azurerm_container_app_environment" "example" {
+  name                = "existing-environment"
+  resource_group_name = "existing-resources"
+}
+
+data "azurerm_container_app_environment_storage" "example" {
+  name                         = "existing-storage"
+  container_app_environment_id = data.azurerm_container_app_environment.example.id
+}
+```
+
+## Arguments Reference
+
+The following arguments are supported:
+
+* `name` - (Required) The name of the Container App Environment Storage.
+
+* `container_app_environment_id` - (Required) The ID of the Container App Environment to which this storage belongs.
+
+## Attributes Reference
+
+In addition to the Arguments listed above - the following Attributes are exported:
+
+* `id` - The ID of the Container App Environment Storage.
+
+* `access_mode` - The access mode to connect this storage to the Container App.
+
+* `account_name` - The Azure Storage Account in which the Share is located.
+
+* `nfs_server_url` - The NFS server URL for the Azure File Share.
+
+* `share_name` - The name of the Azure Storage Share.
+
+## Timeouts
+
+The `timeouts` block allows you to specify [timeouts](https://developer.hashicorp.com/terraform/language/resources/configure#define-operation-timeouts) for certain actions:
+
+* `read` - (Defaults to 5 minutes) Used when retrieving the Container App Environment Storage.
+
+## API Providers
+<!-- This section is generated, changes will be overwritten -->
+This data source uses the following Azure API Providers:
+
+* `Microsoft.App` - 2025-07-01