Merge pull request #2000 from amulyavarote/feature/state_management

Provide consistent examples of state management for all SDKs

daprdocs/content/en/developing-applications/building-blocks/service-invocation/howto-invoke-discover-services.md

@@ -10,9 +10,9 @@ This article describe how to deploy services each with an unique application ID,
 
 ## Example:
 
-The below code examples loosely describe an application that processes orders. In the examples, there are two services - an order processing service and a checkout service. Both services have Dapr sidecars and the order processing service uses Dapr to invoke the checkout method in the checkout service.
+The below code examples loosely describes an application that processes orders. In the examples, there are two services - an order processing service and a checkout service. Both services have Dapr sidecars and the order processing service uses Dapr to invoke the checkout method in the checkout service.
 
-<img src="/images/service_invocation_eg.png" width=1000 height=500 alt="Diagram showing service invocation of example service">
+<img src="/images/building-block-service-invocation-example.png" width=1000 height=500 alt="Diagram showing service invocation of example service">
 
 ## Step 1: Choose an ID for your service
 
@@ -184,18 +184,26 @@ Below are code examples that leverage Dapr SDKs for service invocation.
 {{% codetab %}}
 ```csharp
 
-//headers
-
+//dependencies
 using Dapr.Client;
-using System.Net.Http;
 
 //code
-
-CancellationTokenSource source = new CancellationTokenSource();
-CancellationToken cancellationToken = source.Token;
-using var client = new DaprClientBuilder().Build();
-var result = client.CreateInvokeMethodRequest(HttpMethod.Get, "checkout", "checkout/" + orderId, cancellationToken);
-await client.InvokeMethodAsync(result);
+namespace EventService
+{
+    class Program
+    {
+        static async Task Main(string[] args)
+        {
+          int orderId = 100;
+          CancellationTokenSource source = new CancellationTokenSource();
+          CancellationToken cancellationToken = source.Token;
+          //Using Dapr SDK to invoke a method
+          using var client = new DaprClientBuilder().Build();
+          var result = client.CreateInvokeMethodRequest(HttpMethod.Get, "checkout", "checkout/" + orderId, cancellationToken);
+          await client.InvokeMethodAsync(result);
+        }
+    }
+}
 
 ```
 {{% /codetab %}}
@@ -204,22 +212,27 @@ await client.InvokeMethodAsync(result);
 {{% codetab %}}
 ```java
 
-//headers
-
+//dependencies
 import io.dapr.client.DaprClient;
 import io.dapr.client.DaprClientBuilder;
 import io.dapr.client.domain.HttpExtension;
 
 //code
-
-DaprClient daprClient = new DaprClientBuilder().build();
-var result = daprClient.invokeMethod(
-    "checkout",
-    "checkout/" + orderId,
-    null,
-    HttpExtension.GET,
-    String.class
-);
+@SpringBootApplication
+public class OrderProcessingServiceApplication {
+	public static void main(String[] args) throws InterruptedException {
+      int orderId = 100;
+      //Using Dapr SDK to invoke a method
+      DaprClient client = new DaprClientBuilder().build();
+      var result = client.invokeMethod(
+          "checkout",
+          "checkout/" + orderId,
+          null,
+          HttpExtension.GET,
+          String.class
+      );
+	}
+}
 
 ```
 {{% /codetab %}}
@@ -227,19 +240,19 @@ var result = daprClient.invokeMethod(
 {{% codetab %}}
 ```python
 
-//headers
-
+#dependencies
 from dapr.clients import DaprClient
 
-//code
-
-with DaprClient() as daprClient:
-  result = daprClient.invoke_method(
-      "checkout",
-          f"checkout/{orderId}",
-          data=b'',
-          http_verb="GET"
-  )    
+#code
+orderId = 100
+#Using Dapr SDK to invoke a method
+with DaprClient() as client:
+    result = client.invoke_method(
+        "checkout",
+            f"checkout/{orderId}",
+            data=b'',
+            http_verb="GET"
+    ) 
 
 ```
 {{% /codetab %}}
@@ -247,21 +260,25 @@ with DaprClient() as daprClient:
 {{% codetab %}}
 ```go
 
-//headers
+//dependencies
 import (
-  dapr "github.com/dapr/go-sdk/client"
+	"strconv"
+	dapr "github.com/dapr/go-sdk/client"
+
 )
 
 //code
-
-client, err := dapr.NewClient()
-if err != nil {
-  panic(err)
+func main() {
+  orderId := 100
+  //Using Dapr SDK to invoke a method
+  client, err := dapr.NewClient()
+  if err != nil {
+    panic(err)
+  }
+  defer client.Close()
+  ctx := context.Background()
+  result, err := client.InvokeMethod(ctx, "checkout", "checkout/" + strconv.Itoa(orderId), "get")
 }
-defer client.Close()
-ctx := context.Background()
-
-result, err := client.InvokeMethod(ctx, "checkout", "checkout/" + strconv.Itoa(orderId), "get") 
 
 ```
 {{% /codetab %}}
@@ -269,15 +286,20 @@ result, err := client.InvokeMethod(ctx, "checkout", "checkout/" + strconv.Itoa(o
 {{% codetab %}}
 ```javascript
 
-//headers
-
+//dependencies
 import { DaprClient, HttpMethod, CommunicationProtocolEnum } from 'dapr-client'; 
 
 //code
+const daprHost = "127.0.0.1";
 
-const daprHost = "127.0.0.1"; 
-const client = new DaprClient(daprHost, process.env.DAPR_HTTP_PORT, CommunicationProtocolEnum.HTTP);
-const result = await client.invoker.invoke('checkout' , "checkout/" + orderId , HttpMethod.GET);   
+var main = function() {
+  var orderId = 100;
+  //Using Dapr SDK to invoke a method
+  const client = new DaprClient(daprHost, process.env.DAPR_HTTP_PORT, CommunicationProtocolEnum.HTTP);
+  const result = await client.invoker.invoke('checkout' , "checkout/" + orderId , HttpMethod.GET);
+}
+
+main();
 
 ```
 {{% /codetab %}}
@@ -341,4 +363,4 @@ For more information on tracing and logs see the [observability]({{< ref observa
  ## Related Links
 
 * [Service invocation overview]({{< ref service-invocation-overview.md >}})
-* [Service invocation API specification]({{< ref service_invocation_api.md >}})
+* [Service invocation API specification]({{< ref service_invocation_api.md >}})

daprdocs/content/en/developing-applications/building-blocks/state-management/state-store-ttl.md

@@ -31,12 +31,38 @@ Please refer to the TTL column in the tables at [state store components]({{< ref
 
 State TTL can be set in the metadata as part of the state store set request:
 
-{{< tabs "HTTP API (Bash)" "HTTP API (PowerShell)" "Python SDK" "PHP SDK">}}
+{{< tabs Python "HTTP API (Bash)" "HTTP API (PowerShell)">}}
+
+{{% codetab %}}
+
+```python
+#dependencies
+
+from dapr.clients import DaprClient
+
+#code
+
+DAPR_STORE_NAME = "statestore"
+
+with DaprClient() as client:
+        client.save_state(DAPR_STORE_NAME, "order_1", str(orderId), metadata=(
+            ('ttlInSeconds', '120')
+        )) 
+
+```
+
+Navigate to the directory containing the above code, then run the following command to launch a Dapr sidecar and run the application:
+
+```bash
+dapr run --app-id orderprocessing --app-port 6001 --dapr-http-port 3601 --dapr-grpc-port 60001 -- python3 OrderProcessingService.py
+```
+
+{{% /codetab %}}
 
 {{% codetab %}}
 
 ```bash
-curl -X POST -H "Content-Type: application/json" -d '[{ "key": "key1", "value": "value1", "metadata": { "ttlInSeconds": "120" } }]' http://localhost:3500/v1.0/state/statestore
+curl -X POST -H "Content-Type: application/json" -d '[{ "key": "order_1", "value": "250", "metadata": { "ttlInSeconds": "120" } }]' http://localhost:3601/v1.0/state/statestore
 ```
 
 {{% /codetab %}}
@@ -44,48 +70,7 @@ curl -X POST -H "Content-Type: application/json" -d '[{ "key": "key1", "value":
 {{% codetab %}}
 
 ```powershell
-Invoke-RestMethod -Method Post -ContentType 'application/json' -Body '[{"key": "key1", "value": "value1", "metadata": {"ttlInSeconds": "120"}}]' -Uri 'http://localhost:3500/v1.0/state/statestore'
-```
-
-{{% /codetab %}}
-
-{{% codetab %}}
-
-```python
-from dapr.clients import DaprClient
-
-with DaprClient() as d:
-    d.save_state(
-        store_name="statestore",
-        key="myFirstKey",
-        value="myFirstValue",
-        metadata=(
-            ('ttlInSeconds', '120')
-        )
-    )
-    print("State has been stored")
-
-```
-
-{{% /codetab %}}
-
-{{% codetab %}}
-
-Save the following in `state-example.php`:
-
-```php
-<?php
-require_once __DIR__.'/vendor/autoload.php';
-
-$app = \Dapr\App::create();
-$app->run(function(\Dapr\State\StateManager $stateManager, \Psr\Log\LoggerInterface $logger) {
-    $stateManager->save_state(store_name: 'statestore', item: new \Dapr\State\StateItem(
-        key: 'myFirstKey',
-        value: 'myFirstValue',
-        metadata: ['ttlInSeconds' => '120']
-    ));
-    $logger->alert('State has been stored');
-});
+Invoke-RestMethod -Method Post -ContentType 'application/json' -Body '[{"key": "order_1", "value": "250", "metadata": {"ttlInSeconds": "120"}}]' -Uri 'http://localhost:3601/v1.0/state/statestore'
 ```
 
 {{% /codetab %}}
@@ -98,4 +83,4 @@ See [this guide]({{< ref state_api.md >}}) for a reference on the state API.
 
 - Learn [how to use key value pairs to persist a state]({{< ref howto-get-save-state.md >}})
 - List of [state store components]({{< ref supported-state-stores >}})
-- Read the [API reference]({{< ref state_api.md >}})
+- Read the [API reference]({{< ref state_api.md >}})