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@ -29,6 +29,7 @@ Table captions:
| [InfluxDB]({{< ref influxdb.md >}}) | | ✅ | Alpha | v1 | 1.0 |
| [Kafka]({{< ref kafka.md >}}) | ✅ | ✅ | Alpha | v1 | 1.0 |
| [Kubernetes Events]({{< ref "kubernetes-binding.md" >}}) | ✅ | | Alpha | v1 | 1.0 |
| [Local Storage]({{< ref localstorage.md >}}) | | ✅ | Alpha | v1 | 1.1 |
| [MQTT]({{< ref mqtt.md >}}) | ✅ | ✅ | Alpha | v1 | 1.0 |
| [MySQL]({{< ref mysql.md >}}) | | ✅ | Alpha | v1 | 1.0 |
| [PostgreSql]({{< ref postgres.md >}}) | | ✅ | Alpha | v1 | 1.0 |

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---
type: docs
title: "Local Storage binding spec"
linkTitle: "Local Storage"
description: "Detailed documentation on the Local Storage binding component"
---
## Component format
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.
```yaml
apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
name: <NAME>
namespace: <NAMESPACE>
spec:
type: bindings.localstorage
version: v1
metadata:
- name: rootPath
value: <string>
```
## Spec metadata fields
| Field | Required | Binding support | Details | Example |
|--------------------|:--------:|--------|---------|---------|
| rootPath | Y | Input / Output | The root path anchor to which files can be read / saved | `"/temp/files"` |
## Binding support
This component supports **output binding** with the following operations:
- `create` : [Create file](#create-file)
- `get` : [Get file](#get-file)
- `list` : [List files](#list-files)
- `delete` : [Delete file](#delete-file)
### Create file
To perform a create file operation, invoke the Local Storage binding with a `POST` method and the following JSON body:
> Note: by default, a random UUID is generated. See below for Metadata support to set the name
```json
{
"operation": "create",
"data": "YOUR_CONTENT"
}
```
#### Examples
##### Save text to a random generated UUID file
{{< tabs Windows Linux >}}
{{% codetab %}}
On Windows, utilize cmd prompt (PowerShell has different escaping mechanism)
```bash
curl -d "{ \"operation\": \"create\", \"data\": \"Hello World\" }" http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{% codetab %}}
```bash
curl -d '{ "operation": "create", "data": "Hello World" }' \
http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{< /tabs >}}
##### Save text to a specific file
{{< tabs Windows Linux >}}
{{% codetab %}}
```bash
curl -d "{ \"operation\": \"create\", \"data\": \"Hello World\", \"metadata\": { \"fileName\": \"my-test-file.txt\" } }" \
http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{% codetab %}}
```bash
curl -d '{ "operation": "create", "data": "Hello World", "metadata": { "fileName": "my-test-file.txt" } }' \
http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{< /tabs >}}
##### Save a binary file
To upload a file, encode it as Base64. The binding should automatically detect the Base64 encoding.
{{< tabs Windows Linux >}}
{{% codetab %}}
```bash
curl -d "{ \"operation\": \"create\", \"data\": \"YOUR_BASE_64_CONTENT\", \"metadata\": { \"fileName\": \"my-test-file.jpg\" } }" http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{% codetab %}}
```bash
curl -d '{ "operation": "create", "data": "YOUR_BASE_64_CONTENT", "metadata": { "fileName": "my-test-file.jpg" } }' \
http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{< /tabs >}}
#### Response
The response body will contain the following JSON:
```json
{
"fileName": "<filename>"
}
```
### Get file
To perform a get file operation, invoke the Local Storage binding with a `POST` method and the following JSON body:
```json
{
"operation": "get",
"metadata": {
"fileName": "myfile"
}
}
```
#### Example
{{< tabs Windows Linux >}}
{{% codetab %}}
```bash
curl -d '{ \"operation\": \"get\", \"metadata\": { \"fileName\": \"myfile\" }}' http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{% codetab %}}
```bash
curl -d '{ "operation": "get", "metadata": { "fileName": "myfile" }}' \
http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{< /tabs >}}
#### Response
The response body contains the value stored in the file.
### List files
To perform a list files operation, invoke the Local Storage binding with a `POST` method and the following JSON body:
```json
{
"operation": "list"
}
```
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.
```json
{
"operation": "list",
"metadata": {
"fileName": "my/cool/directory"
}
}
```
#### Example
{{< tabs Windows Linux >}}
{{% codetab %}}
```bash
curl -d '{ \"operation\": \"list\", \"metadata\": { \"fileName\": \"my/cool/directory\" }}' http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{% codetab %}}
```bash
curl -d '{ "operation": "list", "metadata": { "fileName": "my/cool/directory" }}' \
http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{< /tabs >}}
#### Response
The response is a JSON array of file names.
### Delete file
To perform a delete file operation, invoke the Local Storage binding with a `POST` method and the following JSON body:
```json
{
"operation": "delete",
"metadata": {
"fileName": "myfile"
}
}
```
#### Example
{{< tabs Windows Linux >}}
{{% codetab %}}
```bash
curl -d '{ \"operation\": \"delete\", \"metadata\": { \"fileName\": \"myfile\" }}' http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{% codetab %}}
```bash
curl -d '{ "operation": "delete", "metadata": { "fileName": "myfile" }}' \
http://localhost:<dapr-port>/v1.0/bindings/<binding-name>
```
{{% /codetab %}}
{{< /tabs >}}
#### Response
An HTTP 204 (No Content) and empty body will be returned if successful.
## Metadata information
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.
```json
{
"data": "file content",
"metadata": {
"fileName": "filename.txt"
},
"operation": "create"
}
```
## Related links
- [Basic schema for a Dapr component]({{< ref component-schema >}})
- [Bindings building block]({{< ref bindings >}})
- [How-To: Trigger application with input binding]({{< ref howto-triggers.md >}})
- [How-To: Use bindings to interface with external resources]({{< ref howto-bindings.md >}})
- [Bindings API reference]({{< ref bindings_api.md >}})