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Merge pull request #6 from PraneethChandraThota/retry-logic
LU-47 Java Retry Logic
2 parents dd034e1 + fc25912 commit 2366667

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‎README.md‎

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@@ -54,11 +54,11 @@ repositories {
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You can just drop the jar file in.
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[injectionApi-1.1.1.jar](https://github.com/socketlabs/socketlabs-java/releases/download/1.1.1/injectionApi-1.1.1.jar)
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[injectionApi-1.2.1.jar](https://github.com/socketlabs/socketlabs-java/releases/download/1.2.1/injectionApi-1.2.1.jar)
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[injectionApi-1.1.1-sources.jar](https://github.com/socketlabs/socketlabs-java/releases/download/1.1.1/injectionApi-1.1.1-sources.jar)
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[injectionApi-1.2.1-sources.jar](https://github.com/socketlabs/socketlabs-java/releases/download/1.2.1/injectionApi-1.2.1-sources.jar)
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[injectionApi-1.1.1-javadoc.jar](https://github.com/socketlabs/socketlabs-java/releases/download/1.1.1/injectionApi-1.1.1-javadoc.jar)
61+
[injectionApi-1.2.1-javadoc.jar](https://github.com/socketlabs/socketlabs-java/releases/download/1.2.1/injectionApi-1.2.1-javadoc.jar)
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Alternately, you can simply [clone this repository](https://github.com/socketlabs/socketlabs-java.git) directly to include the source code in your project.
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@@ -191,6 +191,9 @@ This example demonstrates how to embed an image in your message.
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### [Basic send with a web proxy](https://github.com/socketlabs/socketlabs-java/tree/master/examples/src/main/java/examples/basic/BasicSendWithProxy.java)
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This example demonstrates how to use a proxy with your HTTP client.
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### [Basic send with retry enabled](https://github.com/socketlabs/socketlabs-java/tree/master/examples/src/main/java/examples/basic/BasicSendWithRetry.java)
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This example demonstrates how to use the retry logic with your HTTP client.
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### [Basic send with invalid file attachment](https://github.com/socketlabs/socketlabs-java/tree/master/examples/src/main/java/examples/basic/invalid/BasicSendWithInvalidAttachment.java)
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This example demonstrates the results of attempting to do a send with an invalid attachment.
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@@ -229,6 +232,7 @@ For more information about AMP please see [AMP Project](https://amp.dev/document
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<a name="version"></a>
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# Version
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* 1.2.1 - Adding optional retry logic for Http requests. If configured, the request will retry when certain 500 errors occur (500, 502, 503, 504)
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* 1.1.1 - Adding request timeout value on the client for Http requests
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* 1.1.0 - Adds Amp Html Support
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* 1.0.0 - Initial Release

‎examples/build.gradle‎

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@@ -16,5 +16,5 @@ dependencies {
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testCompile group: 'junit', name: 'junit', version: '4.12'
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compile 'com.fasterxml.jackson.core:jackson-core:2.11.0'
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compile 'com.fasterxml.jackson.core:jackson-databind:2.11.0'
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compile group: 'com.socketlabs', name: 'injectionApi', version: '1.1.1'
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compile group: 'com.socketlabs', name: 'injectionApi', version: '1.2.1 '
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}

‎examples/src/main/java/examples/Main.java‎

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@@ -56,23 +56,27 @@ private static void DisplayTheMenu() {
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System.out.println(" 7: Basic Send With Embedded Image ");
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System.out.println(" 8: Basic Send With Proxy ");
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System.out.println(" 9: Basic Async Send ");
59-
System.out.println(" 10: Basic Send Complex Example ");
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System.out.println(" 10: Basic Async With Retry");
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System.out.println(" 11: Basic Send With Retry ");
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System.out.println(" 12: Basic Send Complex Example ");
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System.out.println();
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System.out.println(" Validation Error Handling Examples: ");
62-
System.out.println(" 11: Basic Send With Invalid Attachment");
63-
System.out.println(" 12: Basic Send With Invalid From ");
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System.out.println(" 13: Basic Send With Invalid Recipients ");
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System.out.println(" 13: Basic Send With Invalid Attachment");
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System.out.println(" 14: Basic Send With Invalid From ");
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System.out.println(" 15: Basic Send With Invalid Recipients ");
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System.out.println();
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System.out.println(" Bulk Send Examples: ");
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System.out.println(" 14: Bulk Send ");
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System.out.println(" 15: Bulk Send With MergeData ");
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System.out.println(" 16: Bulk Send With ASCII Charset And Merge Data ");
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System.out.println(" 17: Bulk Send From DataSource With Merge Data ");
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System.out.println(" 18: Bulk Send Complex Example ");
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System.out.println(" 16: Bulk Send ");
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System.out.println(" 17: Bulk Send With MergeData ");
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System.out.println(" 18: Bulk Send With ASCII Charset And Merge Data ");
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System.out.println(" 19: Bulk Send From DataSource With Merge Data ");
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System.out.println(" 20: Bulk Send Complex Example ");
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System.out.println();
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System.out.println(" AMP Html Examples: ");
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System.out.println(" 19: Basic Send With Amp Body Example ");
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System.out.println(" 20: Bulk Send With Amp Body Example ");
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System.out.println(" 21: Basic Send With Amp Body Example ");
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System.out.println(" 22: Bulk Send With Amp Body Example ");
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System.out.println();
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System.out.println("-------------------------------------------------------------------------");
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}
@@ -97,17 +101,20 @@ private static String GetExampleName(String selection) {
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case 7: return "examples.basic.BasicSendWithEmbeddedImage";
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case 8: return "examples.basic.BasicSendWithProxy";
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case 9: return "examples.basic.BasicAsync";
100-
case 10: return "examples.basic.BasicSendComplexExample";
101-
case 11: return "examples.basic.invalid.BasicSendWithInvalidAttachment";
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case 12: return "examples.basic.invalid.BasicSendWithInvalidFrom";
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case 13: return "examples.basic.invalid.BasicSendWithInvalidRecipients";
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case 14: return "examples.bulk.BulkSend";
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case 15: return "examples.bulk.BulkSendWithMergeData";
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case 16: return "examples.bulk.BulkSendWithASCIICharsetMergeData";
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case 17: return "examples.bulk.BulkSendFromDataSourceWithMerge";
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case 18: return "examples.bulk.BulkSendComplexExample";
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case 19: return "examples.basic.BasicSendWithAmpBodyExample";
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case 20: return "examples.bulk.BulkSendWithAmpBodyExample";
104+
case 10: return "examples.basic.BasicAsyncWithRetry";
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case 11: return "examples.basic.BasicSendWithRetry";
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case 12: return "examples.basic.BasicSendComplexExample";
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case 13: return "examples.basic.invalid.BasicSendWithInvalidAttachment";
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case 14: return "examples.basic.invalid.BasicSendWithInvalidFrom";
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case 15: return "examples.basic.invalid.BasicSendWithInvalidRecipients";
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case 16: return "examples.bulk.BulkSend";
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case 17: return "examples.bulk.BulkSendWithMergeData";
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case 18: return "examples.bulk.BulkSendWithASCIICharsetMergeData";
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case 19: return "examples.bulk.BulkSendFromDataSourceWithMerge";
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case 20: return "examples.bulk.BulkSendComplexExample";
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case 21: return "examples.basic.BasicSendWithAmpBodyExample";
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case 22: return "examples.bulk.BulkSendWithAmpBodyExample";
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default:
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System.out.println("Invalid Input (Out of Range)");
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return null;

‎examples/src/main/java/examples/basic/BasicAsync.java‎

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@@ -8,6 +8,7 @@
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import com.socketLabs.injectionApi.message.BasicMessage;
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import com.socketLabs.injectionApi.message.EmailAddress;
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import examples.*;
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import okhttp3.Call;
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import java.io.IOException;
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‎examples/src/main/java/examples/basic/BasicAsyncWithRetry.java‎

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package examples.basic;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.SerializationFeature;
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import com.socketLabs.injectionApi.SendResponse;
6+
import com.socketLabs.injectionApi.SocketLabsClient;
7+
import com.socketLabs.injectionApi.core.SendAsyncCallback;
8+
import com.socketLabs.injectionApi.message.BasicMessage;
9+
import com.socketLabs.injectionApi.message.EmailAddress;
10+
import examples.Example;
11+
import examples.ExampleConfig;
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import java.io.IOException;
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import java.net.InetSocketAddress;
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import java.net.Proxy;
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public class BasicAsyncWithRetry implements Example {
18+
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@Override
20+
public SendResponse RunExample() throws Exception {
21+
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BasicMessage message = new BasicMessage();
23+
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message.setSubject("Sending A Test Message (Basic Send Async)");
25+
message.setHtmlBody("<html><body><h1>Sending A Test Message</h1><p>This is the Html Body of my message.</p></body></html>");
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message.setPlainTextBody("This is the Plain Text Body of my message.");
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message.setFrom(new EmailAddress("[email protected]"));
29+
message.addToEmailAddress("[email protected]");
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// create the proxy
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Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("127.0.0.1", 4433));
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// create the client
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SocketLabsClient client = new SocketLabsClient(ExampleConfig.ServerId, ExampleConfig.ApiKey, proxy);
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client.setRequestTimeout(5);
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client.setNumberOfRetries(2);
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// send the message
41+
client.sendAsync(message, new SendAsyncCallback() {
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@Override
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public void onError(Exception ex) {
45+
// Handle Exception here
46+
ex.printStackTrace();
47+
return;
48+
}
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@Override
51+
public void onResponse(SendResponse response) throws IOException {
52+
// Handle SendResponse here
53+
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ObjectMapper mapper = new ObjectMapper().enable(SerializationFeature.INDENT_OUTPUT);
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System.out.println("Response body : ");
57+
System.out.println(mapper.writeValueAsString(response));
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System.out.println();
59+
System.out.println();
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System.out.println("Enter a number (or QUIT to exit):");
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return;
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64+
}
65+
});
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67+
System.out.println("Waiting for response...");
68+
return null;
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}
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}

‎examples/src/main/java/examples/basic/BasicSendWithRetry.java‎

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package examples.basic;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.SerializationFeature;
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import com.socketLabs.injectionApi.SendResponse;
6+
import com.socketLabs.injectionApi.SocketLabsClient;
7+
import com.socketLabs.injectionApi.core.SendAsyncCallback;
8+
import com.socketLabs.injectionApi.message.BasicMessage;
9+
import com.socketLabs.injectionApi.message.EmailAddress;
10+
import examples.Example;
11+
import examples.ExampleConfig;
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import java.io.IOException;
14+
import java.net.InetSocketAddress;
15+
import java.net.Proxy;
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18+
public class BasicSendWithRetry implements Example {
19+
public SendResponse RunExample () throws Exception {
20+
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BasicMessage message = new BasicMessage();
22+
23+
message.setSubject("Sending An Email Through A Proxy");
24+
message.setHtmlBody("<html><body><h1>Sending An Email Through A Proxy</h1><p>This is the Html Body of my message.</p></body></html>");
25+
message.setPlainTextBody("This is the Plain Text Body of my message.");
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27+
message.setFrom(new EmailAddress("[email protected]"));
28+
message.addToEmailAddress("[email protected]");
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// create the proxy
31+
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("127.0.0.1", 4433));
32+
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// create the client
34+
SocketLabsClient client = new SocketLabsClient(ExampleConfig.ServerId, ExampleConfig.ApiKey, proxy);
35+
client.setNumberOfRetries(2);
36+
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// send the message
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SendResponse response = client.send(message);
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return response;
41+
}
42+
}

‎injectionApi/build.gradle‎

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@@ -7,7 +7,7 @@ plugins {
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def baseGroupId = "com.socketlabs"
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def baseArtifactId = 'injectionApi'
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def computeVersion() {
10-
def baseVersion = "1.1.1"
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def baseVersion = "1.2.1"
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def release = true
1212
if (release)
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return "${baseVersion}"

‎injectionApi/pom.xml‎

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<modelVersion>4.0.0</modelVersion>
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<groupId>com.socketlabs</groupId>
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<artifactId>injectionApi</artifactId>
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<version>1.1.1</version>
7+
<version>1.2.1</version>
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<name>socketlabs-java</name>
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<description>SocketLabs Email Delivery Java library</description>
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<url>https://github.com/socketlabs/socketlabs-java/</url>
@@ -23,15 +23,15 @@
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<id>david-schrenker</id>
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<name>David Schrenker</name>
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<email>[email protected]</email>
26-
<organization>org.apache.maven.model.Organization@15ba5d1c</organization>
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<organization>org.apache.maven.model.Organization@4d9a0b1c</organization>
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<roles>
2828
<role>Developer</role>
2929
</roles>
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</developer>
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<developer>
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<id>rbrazuk</id>
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<name>Ross Brazuk</name>
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<organization>org.apache.maven.model.Organization@3cf2a6e7</organization>
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<organization>org.apache.maven.model.Organization@201c6b36</organization>
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<roles>
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<role>Developer</role>
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</roles>
@@ -40,7 +40,7 @@
4040
<contributors>
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<contributor>
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<name>Ryan Lydzinski</name>
43-
<organization>org.apache.maven.model.Organization@2e482819</organization>
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<organization>org.apache.maven.model.Organization@6c83948b</organization>
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<roles>
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<role>Intern</role>
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</roles>

‎injectionApi/src/main/java/com/socketLabs/injectionApi/RetrySettings.java‎

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package com.socketLabs.injectionApi;
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import java.time.Duration;
5+
import java.util.Random;
6+
7+
public class RetrySettings {
8+
private final int defaultNumberOfRetries = 0;
9+
private final int maximumAllowedNumberOfRetries = 5;
10+
private Duration minimumRetryTIme = Duration.ofSeconds(1);
11+
private Duration maximumRetryTime = Duration.ofSeconds(10);
12+
private int maximumNumberOfRetries = defaultNumberOfRetries;
13+
14+
/// <summary>
15+
/// Creates a new instance of the <c>RetrySettings</c>.
16+
/// </summary>
17+
/// <param name="maximumRetries"></param>
18+
public RetrySettings(int maximumRetries){
19+
if (maximumRetries < 0)
20+
throw new IllegalArgumentException("maximumNumberOfRetries must be greater than 0");
21+
if (maximumRetries > 5)
22+
throw new IllegalArgumentException("The maximum number of allowed retries is " + maximumAllowedNumberOfRetries);
23+
maximumNumberOfRetries = maximumRetries;
24+
}
25+
26+
/// <summary>
27+
/// The maximum number of retries when sending an Injection API Request before throwing an exception. Default: 0, no retries, you must explicitly enable retry settings
28+
/// </summary>
29+
public int getMaximumNumberOfRetries(){
30+
return maximumNumberOfRetries;
31+
}
32+
33+
34+
/// <summary>
35+
/// Get the time period to wait before next call
36+
/// </summary>
37+
/// <param name="numberOfAttempts"></param>
38+
/// <returns></returns>
39+
public Duration getNextWaitInterval(int numberOfAttempts){
40+
41+
long interval = Math.min(
42+
minimumRetryTIme.toMillis() + getRetryDelta(numberOfAttempts),
43+
maximumRetryTime.toMillis());
44+
return Duration.ofMillis(interval);
45+
46+
}
47+
48+
public int getRetryDelta(int numberOfAttempts){
49+
50+
Random random = new Random();
51+
52+
int min = (int) (Duration.ofSeconds(1).toMillis() * 0.8);
53+
int max = (int) (Duration.ofSeconds(1).toMillis() * 1.2);
54+
int randomNumber = random.nextInt(max - min) + min;
55+
56+
return (int) ((Math.pow(2.0, numberOfAttempts) - 1.0) * randomNumber);
57+
58+
}
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60+
}

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