Add example for GetBlockTransactionEvents (#254)

* Add example for GetBlockTransactionEvents.
Concordium · Jul 31, 2023 · 09c4a16 · 09c4a16
1 parent 443fddb
commit 09c4a16
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Showing 3 changed files with 51 additions and 3 deletions.
diff --git a/...ium-sdk-examples/src/main/java/com/concordium/sdk/examples/GetBlockTransactionEvents.java b/...ium-sdk-examples/src/main/java/com/concordium/sdk/examples/GetBlockTransactionEvents.java
@@ -0,0 +1,51 @@
+package com.concordium.sdk.examples;
+
+import com.concordium.sdk.ClientV2;
+import com.concordium.sdk.Connection;
+import com.concordium.sdk.exceptions.ClientInitializationException;
+import com.concordium.sdk.requests.BlockQuery;
+import com.concordium.sdk.responses.blockitemsummary.Summary;
+import picocli.CommandLine;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.Iterator;
+import java.util.concurrent.Callable;
+
+/**
+ * Gets the block transaction events by {@link com.concordium.sdk.examples.GetBlockTransactionEvents} and prints it to the console.
+ */
+@CommandLine.Command(name = "GetBlockTransactionEvents", mixinStandardHelpOptions = true)
+public class GetBlockTransactionEvents implements Callable<Integer> {
+    @CommandLine.Option(
+            names = {"--endpoint"},
+            description = "GRPC interface of the node.",
+            defaultValue = "http://localhost:20000")
+    private String endpoint;
+
+
+    @Override
+    public Integer call() throws ClientInitializationException, MalformedURLException {
+        URL endpointUrl = new URL(this.endpoint);
+        Connection connection = Connection.newBuilder()
+                .host(endpointUrl.getHost())
+                .port(endpointUrl.getPort())
+                .build();
+
+        Iterator<Summary> blockTransactionEvents = ClientV2
+                .from(connection)
+                .getBlockTransactionEvents(BlockQuery.LAST_FINAL);
+
+        while(blockTransactionEvents.hasNext()) {
+            Summary event = blockTransactionEvents.next();
+            System.out.println(event);
+        }
+
+        return 0;
+    }
+
+    public static void main(String[] args) {
+        int exitCode = new CommandLine(new com.concordium.sdk.examples.GetBlockTransactionEvents()).execute(args);
+        System.exit(exitCode);
+    }
+}
diff --git a/concordium-sdk-examples/src/main/java/com/concordium/sdk/examples/GetModuleSource.java b/concordium-sdk-examples/src/main/java/com/concordium/sdk/examples/GetModuleSource.java
@@ -2,7 +2,6 @@
 
 import com.concordium.sdk.ClientV2;
 import com.concordium.sdk.Connection;
-import com.concordium.sdk.Credentials;
 import com.concordium.sdk.exceptions.ClientInitializationException;
 import com.concordium.sdk.requests.BlockQuery;
 import com.concordium.sdk.responses.modulelist.ModuleRef;
@@ -38,7 +37,6 @@ public Integer call() throws ClientInitializationException, MalformedURLExceptio
         Connection connection = Connection.newBuilder()
                 .host(endpointUrl.getHost())
                 .port(endpointUrl.getPort())
-                .credentials(new Credentials())
                 .build();
 
         WasmModule moduleSource = ClientV2

diff --git a/concordium-sdk-examples/src/main/java/com/concordium/sdk/examples/InstanceStateLookup.java b/concordium-sdk-examples/src/main/java/com/concordium/sdk/examples/InstanceStateLookup.java
@@ -2,7 +2,6 @@
 
 import com.concordium.sdk.ClientV2;
 import com.concordium.sdk.Connection;
-import com.concordium.sdk.Credentials;
 import com.concordium.sdk.exceptions.ClientInitializationException;
 import com.concordium.sdk.requests.BlockQuery;
 import com.concordium.sdk.types.ContractAddress;