mirror of https://github.com/dapr/docs.git
Merge pull request #1340 from lynn-orrell/v1.1
Added docs for Local Storage binding
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@ -29,6 +29,7 @@ Table captions:
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| [InfluxDB]({{< ref influxdb.md >}}) | | ✅ | Alpha | v1 | 1.0 |
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| [InfluxDB]({{< ref influxdb.md >}}) | | ✅ | Alpha | v1 | 1.0 |
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| [Kafka]({{< ref kafka.md >}}) | ✅ | ✅ | Alpha | v1 | 1.0 |
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| [Kafka]({{< ref kafka.md >}}) | ✅ | ✅ | Alpha | v1 | 1.0 |
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| [Kubernetes Events]({{< ref "kubernetes-binding.md" >}}) | ✅ | | Alpha | v1 | 1.0 |
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| [Kubernetes Events]({{< ref "kubernetes-binding.md" >}}) | ✅ | | Alpha | v1 | 1.0 |
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| [Local Storage]({{< ref localstorage.md >}}) | | ✅ | Alpha | v1 | 1.1 |
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| [MQTT]({{< ref mqtt.md >}}) | ✅ | ✅ | Alpha | v1 | 1.0 |
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| [MQTT]({{< ref mqtt.md >}}) | ✅ | ✅ | Alpha | v1 | 1.0 |
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| [MySQL]({{< ref mysql.md >}}) | | ✅ | Alpha | v1 | 1.0 |
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| [MySQL]({{< ref mysql.md >}}) | | ✅ | Alpha | v1 | 1.0 |
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| [PostgreSql]({{< ref postgres.md >}}) | | ✅ | Alpha | v1 | 1.0 |
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| [PostgreSql]({{< ref postgres.md >}}) | | ✅ | Alpha | v1 | 1.0 |
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---
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type: docs
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title: "Local Storage binding spec"
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linkTitle: "Local Storage"
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description: "Detailed documentation on the Local Storage binding component"
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---
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## Component format
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To set up the Local Storage binding, create a component of type `bindings.localstorage`. See [this guide]({{< ref "howto-bindings.md#1-create-a-binding" >}}) on how to create and apply a binding configuration.
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```yaml
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apiVersion: dapr.io/v1alpha1
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kind: Component
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metadata:
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name: <NAME>
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namespace: <NAMESPACE>
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spec:
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type: bindings.localstorage
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version: v1
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metadata:
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- name: rootPath
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value: <string>
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```
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## Spec metadata fields
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| Field | Required | Binding support | Details | Example |
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|--------------------|:--------:|--------|---------|---------|
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| rootPath | Y | Input / Output | The root path anchor to which files can be read / saved | `"/temp/files"` |
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## Binding support
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This component supports **output binding** with the following operations:
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- `create` : [Create file](#create-file)
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- `get` : [Get file](#get-file)
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- `list` : [List files](#list-files)
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- `delete` : [Delete file](#delete-file)
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### Create file
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To perform a create file operation, invoke the Local Storage binding with a `POST` method and the following JSON body:
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> Note: by default, a random UUID is generated. See below for Metadata support to set the name
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```json
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{
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"operation": "create",
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"data": "YOUR_CONTENT"
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}
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```
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#### Examples
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##### Save text to a random generated UUID file
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{{< tabs Windows Linux >}}
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{{% codetab %}}
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On Windows, utilize cmd prompt (PowerShell has different escaping mechanism)
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```bash
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curl -d "{ \"operation\": \"create\", \"data\": \"Hello World\" }" http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{% codetab %}}
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```bash
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curl -d '{ "operation": "create", "data": "Hello World" }' \
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http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{< /tabs >}}
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##### Save text to a specific file
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{{< tabs Windows Linux >}}
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{{% codetab %}}
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```bash
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curl -d "{ \"operation\": \"create\", \"data\": \"Hello World\", \"metadata\": { \"fileName\": \"my-test-file.txt\" } }" \
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http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{% codetab %}}
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```bash
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curl -d '{ "operation": "create", "data": "Hello World", "metadata": { "fileName": "my-test-file.txt" } }' \
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http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{< /tabs >}}
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##### Save a binary file
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To upload a file, encode it as Base64. The binding should automatically detect the Base64 encoding.
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{{< tabs Windows Linux >}}
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{{% codetab %}}
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```bash
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curl -d "{ \"operation\": \"create\", \"data\": \"YOUR_BASE_64_CONTENT\", \"metadata\": { \"fileName\": \"my-test-file.jpg\" } }" http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{% codetab %}}
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```bash
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curl -d '{ "operation": "create", "data": "YOUR_BASE_64_CONTENT", "metadata": { "fileName": "my-test-file.jpg" } }' \
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http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{< /tabs >}}
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#### Response
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The response body will contain the following JSON:
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```json
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{
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"fileName": "<filename>"
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}
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```
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### Get file
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To perform a get file operation, invoke the Local Storage binding with a `POST` method and the following JSON body:
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```json
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{
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"operation": "get",
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"metadata": {
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"fileName": "myfile"
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}
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}
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```
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#### Example
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{{< tabs Windows Linux >}}
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{{% codetab %}}
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```bash
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curl -d '{ \"operation\": \"get\", \"metadata\": { \"fileName\": \"myfile\" }}' http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{% codetab %}}
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```bash
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curl -d '{ "operation": "get", "metadata": { "fileName": "myfile" }}' \
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http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{< /tabs >}}
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#### Response
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The response body contains the value stored in the file.
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### List files
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To perform a list files operation, invoke the Local Storage binding with a `POST` method and the following JSON body:
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```json
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{
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"operation": "list"
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}
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```
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If you only want to list the files beneath a particular directory below the `rootPath`, specify the relative directory name as the `fileName` in the metadata.
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```json
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{
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"operation": "list",
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"metadata": {
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"fileName": "my/cool/directory"
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}
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}
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```
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#### Example
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{{< tabs Windows Linux >}}
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{{% codetab %}}
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```bash
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curl -d '{ \"operation\": \"list\", \"metadata\": { \"fileName\": \"my/cool/directory\" }}' http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{% codetab %}}
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```bash
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curl -d '{ "operation": "list", "metadata": { "fileName": "my/cool/directory" }}' \
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http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{< /tabs >}}
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#### Response
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The response is a JSON array of file names.
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### Delete file
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To perform a delete file operation, invoke the Local Storage binding with a `POST` method and the following JSON body:
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```json
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{
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"operation": "delete",
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"metadata": {
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"fileName": "myfile"
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}
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}
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```
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#### Example
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{{< tabs Windows Linux >}}
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{{% codetab %}}
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```bash
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curl -d '{ \"operation\": \"delete\", \"metadata\": { \"fileName\": \"myfile\" }}' http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{% codetab %}}
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```bash
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curl -d '{ "operation": "delete", "metadata": { "fileName": "myfile" }}' \
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http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
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```
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{{% /codetab %}}
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{{< /tabs >}}
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#### Response
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An HTTP 204 (No Content) and empty body will be returned if successful.
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## Metadata information
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By default the Local Storage output binding auto generates a UUID as the file name. It is configurable in the metadata property of the message.
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```json
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{
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"data": "file content",
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"metadata": {
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"fileName": "filename.txt"
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},
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"operation": "create"
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}
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```
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## Related links
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- [Basic schema for a Dapr component]({{< ref component-schema >}})
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- [Bindings building block]({{< ref bindings >}})
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- [How-To: Trigger application with input binding]({{< ref howto-triggers.md >}})
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- [How-To: Use bindings to interface with external resources]({{< ref howto-bindings.md >}})
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- [Bindings API reference]({{< ref bindings_api.md >}})
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