Very simple setup:
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>demo-rest-client</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo-rest-client</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-all</artifactId>
<version>4.1.5.Final</version>
</dependency>
<dependency>
<groupId>io.netty</groupId>
<artifactId>netty-buffer</artifactId>
<version>4.1.5.Final</version>
</dependency>
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>io.github.openfeign</groupId>
<artifactId>feign-core</artifactId>
<version>9.3.1</version>
</dependency>
<dependency>
<groupId>io.github.openfeign</groupId>
<artifactId>feign-hystrix</artifactId>
<version>9.3.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
And a test case to demonstrate different usages of AsyncRestTemplate:
SampleTests.java
package com.example;
import com.netflix.hystrix.HystrixCommand;
import com.netflix.hystrix.HystrixCommandProperties;
import feign.RequestLine;
import feign.hystrix.HystrixFeign;
import feign.hystrix.SetterFactory;
import org.junit.Test;
import org.springframework.http.ResponseEntity;
import org.springframework.http.client.Netty4ClientHttpRequestFactory;
import org.springframework.http.client.OkHttp3ClientHttpRequestFactory;
import org.springframework.util.concurrent.ListenableFuture;
import org.springframework.web.client.AsyncRestTemplate;
import org.springframework.web.client.RestTemplate;
public class SampleTests {
private static final String URL = "https://api.github.com/users/octocat";
private static final int DEFAULT_SLEEP_MILLIS = 20;
private static final int DEFAULT_TIMEOUT = 10000;
#Test(timeout = DEFAULT_TIMEOUT)
public void syncRestNetty() throws Exception {
RestTemplate restTemplate = new RestTemplate(new Netty4ClientHttpRequestFactory());
ResponseEntity<String> response = restTemplate.getForEntity(URL, String.class);
System.out.println("response = " + response);
}
#Test(timeout = DEFAULT_TIMEOUT)
public void asyncRestNetty() throws Exception {
AsyncRestTemplate restTemplate = new AsyncRestTemplate(new Netty4ClientHttpRequestFactory());
ListenableFuture<ResponseEntity<String>> listenableFuture = restTemplate.getForEntity(URL, String.class);
listenableFuture.addCallback(result -> System.out.println("result = " + result), Throwable::printStackTrace);
while (!listenableFuture.isDone()) {
Thread.sleep(DEFAULT_SLEEP_MILLIS);
}
System.out.println("the end");
}
#Test
public void asyncRestOkHttp() throws Exception {
AsyncRestTemplate restTemplate = new AsyncRestTemplate(new OkHttp3ClientHttpRequestFactory());
ListenableFuture<ResponseEntity<String>> listenableFuture = restTemplate.getForEntity(URL, String.class);
listenableFuture.addCallback(result -> System.out.println("result = " + result), Throwable::printStackTrace);
while (!listenableFuture.isDone()) {
Thread.sleep(DEFAULT_SLEEP_MILLIS);
}
System.out.println("the end");
}
#Test
public void asyncRestHystrixFeign() throws Exception {
GitHub gitHub = HystrixFeign.builder()
.setterFactory((target, method) -> new SetterFactory.Default().create(target, method).andCommandPropertiesDefaults(HystrixCommandProperties.defaultSetter().withExecutionTimeoutInMilliseconds(10000)))
.target(GitHub.class, "https://api.github.com");
HystrixCommand<String> command = gitHub.octocatAsync();
command.toObservable().subscribe(result -> System.out.println("result = " + result), Throwable::printStackTrace);
while (!command.isExecutionComplete()) {
Thread.sleep(DEFAULT_SLEEP_MILLIS);
}
System.out.println("command.getExecutionTimeInMilliseconds() = " + command.getExecutionTimeInMilliseconds());
System.out.println("the end");
}
interface GitHub {
#RequestLine("GET /users/octocat")
HystrixCommand<String> octocatAsync();
}
}
When trying to run the tests which use Netty they just hang forever. (To see this please remove the JUnit timeout constraint). But if I run the exact same code with other clients everything works as expected.
I have tried different versions of Spring Boot and Netty but did not succeed. And from the logs everything looks ok.
What am I missing here?
EDIT:
Opened a ticket https://jira.spring.io/browse/SPR-14744 as suggested on Spring Gitter
EDIT-2:
Answer from Brian Clozel helped me find the issue which is related to Netty not realizing the server sent an empty response (a particular case with Github API and plain http) so I am marking it as accepted.
Can you try to configure your request factory with a Netty Sslcontext?
Netty4ClientHttpRequestFactory nettyFactory = new Netty4ClientHttpRequestFactory();
nettyFactory.setSslContext(SslContextBuilder.forClient().build());
AsyncRestTemplate restTemplate = new AsyncRestTemplate(nettyFactory);
Without that context, the client is trying to send plaintext requests to the https endpoint; in that case, you're probably getting an HTTP 400 response.
In your example code, the throwable should be an instance of HttpClientErrorException, and you could get that information by logging the response status or its body with exception.getResponseBodyAsString().
Related
Eureka configuration is pulled perfectly from the config server but the endpoints are not pulled from config-server.
Please let me know if I am missing something.
#Service
#RefreshScope
public class OrderService {
#Autowired
private OrderRepo orderRepo;
#Autowired
#Lazy
private RestTemplate restTemplate;
#Value("${payment.endpoints}")
private String DO_PAYMENT_URL;
public TransactionResponse saveOrder(TransactionRequest request) {
System.err.println(request);
TransactionResponse response = new TransactionResponse();
Order order = request.getOrder();
Payment payment = request.getPayment();
payment.setOrderId(order.getId());
response.setOrder(orderRepo.save(order));
// rest call
Payment paymentResponse =
// restTemplate.postForObject("http://localhost:8083/payment/doPayment",payment,
// Payment.class);
// restTemplate.postForObject("http://PAYMENT-SERVICE/payment/doPayment",payment,
// Payment.class);
restTemplate.postForObject(DO_PAYMENT_URL + "/doPayment", payment, Payment.class);
response.setMessage(
paymentResponse.getStatus().equalsIgnoreCase("success") ? "payment successful" : "payment failed");
response.setTransactionId(paymentResponse.getTransactionId());
return response;
}
}
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.12.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.hk</groupId>
<artifactId>order-service</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>order-service</name>
<description>order service</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Hoxton.SR11</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
git-config-file :
https://gitlab.com/nickybesra/microservice-cloud-config/-/blob/main/application.yml
ORDER-SERVICE bootstrap.yml:
spring:
cloud:
config:
uri:
- http://localhost:9196
microservice code :
https://gitlab.com/nickybesra/microservice-2021
I'm trying to create a proof of concept Spring Boot application that leverages Thymeleaf to populate a string structure based upon properties and request parameters. I had it working using the Model implementation, but that only works if the populated template is the response. In this case, I want the populated template to be used within the project.
#Controller
#RequestMapping("/poc")
public class InfoController {
#Autowired
ThymeleafService thymeleafService;
#Value("${reportType}")
private String reportType;
// This function works - the reportType variable is populated based upon application.properties
#GetMapping("/map")
public String testMap(#RequestParam(name = "id", required = false, defaultValue = "2")
String id, Model model){
model.addAttribute("reportType", "\"" + reportType + "\"");
return id + ".json";
}
// this function does not work - the reportType variable is null
#RequestMapping(value = "/map2",method= RequestMethod.POST)
public String testMap2(#RequestBody MapRequest request, #RequestParam(name = "id", required = false, defaultValue = "2")
String id, Model model) {
String output = thymeleafService.processTemplate(request, id);
return output;
}
}
The ThymeleafService is pretty simple.
#Component
public class ThymeleafService {
#Value("${reportType}")
private String reportType;
private TemplateEngine templateEngine;
public String processTemplate(MapRequest request, String templateId){
templateEngine = new TemplateEngine();
StringTemplateResolver resolver = new StringTemplateResolver();
resolver.setTemplateMode(TemplateMode.TEXT);
templateEngine.addTemplateResolver(resolver);
// Map<String, Object> attributes = new HashMap<>();
final Context ctxt = new Context(Locale.US);
ctxt.setVariable("reportType", "\"" + reportType + "\"");
// for (String name : ctxt.getVariableNames()){
//// attributes.put(name, ctxt.getVariable(name));
// }
TemplateSpec templateSpec = new TemplateSpec(templateId + ".json", null, TemplateMode.TEXT, attributes);
StringWriter writer = new StringWriter();
templateEngine.process(templateSpec, ctxt, writer);
return writer.toString();
}
}
POM.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.8.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.poc</groupId>
<artifactId>map</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>mappoc</name>
<description>POC</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>Greenwich.SR3</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-xml</artifactId>
</dependency>
<dependency>
<groupId>ognl</groupId>
<artifactId>ognl</artifactId>
<version>3.1.12</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Here is the template:
ReportType: [(${reportType})]
What I end up getting back from map is:
ReportType: "configReportType"
But what I end up getting back from map2 is:
ReportType:
I've tried setting the attributes in the Context, with and without an AttributeMap in the TemplateEngine.process function. I've tried using a TemplateSpec and tried just a string for the template name.
I've debugged the code and confirmed that the reportType variable is getting set and passed into the process function. But for some reason beyond me, it's not actually injecting the data into the response. I feel like I'm missing something really obvious, but I can't figure it. Any help would be greatly appreciated.
NOTE: The reason I can't just use the Model paradigm is because while right now, it returns the data to the caller, the end goal is to USE that data.
I finally managed to get this working - the trick was that I had to:
Use ClassLoaderTemplateResolver instead of StringTemplateResolver
Change the response in the Controller from String to ResponseEntity
Remove Model from the Controller signature
i think the syntax of your variable is incorect
It should be [[${reportType}]] not [(${reportType})]
This is how I make use of it with thymeleaf 3.0
I have a complex Json file made up of several nested objects and array of objects. The first object is an "OptionChain" that has an object called "Result". "Result" has nested objects: "Quote" and "Options". Finally, "Options" has nested array of objects named "Call" and "Put".
I have all the class variables annotated with #JSonProperty and using Spring Boot with Jackson to deal with the Object Mapping. I am new with using Jackson and Object Mapping.
When I run the program, I get this error:
Caused by: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "optionChain" (class com.thompson.OptionsImpliedMovement.data.OptionChain), not marked as ignorable (one known property: "result"])
at [Source: (String)"{"optionChain":{"result":[{"underlyingSymbol":"KO","expirationDates":[1550188800,1550793600,1551398400,1552003200,1552608000,1553212800,1553817600,1555545600,1558051200,1561075200,1565913600,1579219200,1610668800],"strikes":[37.0,38.0,40.5,41.5,42.5,43.5,44.5,45.5,46.5,47.5,48.5,49.5,50.5,51.0,51.5,52.0,53.0,53.5,54.0],"hasMiniOptions":false,"quote":{"language":"en-US","region":"US","quoteType":"EQUITY","quoteSourceName":"Nasdaq Real Time Price","currency":"USD","exchangeDataDelayedBy":0,"earnin"[truncated 10817 chars]; line: 1, column: 17] (through reference chain: com.thompson.OptionsImpliedMovement.data.OptionChain["optionChain"])
Here is the main class, pom.xml, and two of my java classes:
Main:
import com.fasterxml.jackson.databind.ObjectMapper;
import com.thompson.OptionsImpliedMovement.data.OptionChain;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.http.*;
import org.springframework.web.client.RestTemplate;
import java.util.Collections;
#SpringBootApplication
public class OptionsImpliedMovementApplication implements CommandLineRunner {
public static void main(String[] args) {
SpringApplication.run(OptionsImpliedMovementApplication.class, args);
}
#Override
public void run(String... args) throws Exception {
RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers = new HttpHeaders();
headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
String resourceURL = "https://query2.finance.yahoo.com/v7/finance/options/ko";
HttpEntity<String> entity = new HttpEntity<>(headers);
ResponseEntity<String> response = restTemplate.exchange(resourceURL, HttpMethod.GET,entity, String.class);
String rawJson = response.getBody();
ObjectMapper objectMapper = new ObjectMapper();
OptionChain optionChain = objectMapper.readValue(rawJson, OptionChain.class);
}
}
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.thompson</groupId>
<artifactId>OptionsImpliedMovement</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>OptionsImpliedMovement</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
OptionChain:
import com.fasterxml.jackson.annotation.JsonProperty;
public class OptionChain {
#JsonProperty("result")
public Result result;
}
Result:
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonProperty;
public class Result {
#JsonProperty("underlyingSymbol")
public String symbol;
#JsonProperty("expirationDates")
public long[] expirationDates;
#JsonProperty("strikes")
public double[] strikes;
#JsonProperty("hasMiniOptions")
public boolean hasMiniOptions;
#JsonProperty("quote")
public Quote quote;
#JsonProperty("options")
public Options option;
}
Here is a screenshot of hierarchy of Json file:
Hierarchy of Json
And finally here is the full Json file attached:
Full Json File
Thanks in advance for any help!
It seems to me that you're unmarshaling JSON that is { "optionChain": {...} } but you're doing so directly into an OptionChain. Instead, you need to define a class that has a single OptionChain member, because you are unmarshaling the outer object that contains this optionChain field (The { } that surrounds the entire response is the object you're trying to unmarshal).
So, for example:
public class OptionChainResponse {
#JsonProperty("optionChain")
private OptionChain optionChain;
// getter/setter
}
And then:
OptionChainResponse optionChainResponse = objectMapper.readValue(rawJson, OptionChainResponse.class);
// do some validation or checking maybe
OptionChain optionChain = optionChainResponse.getOptionChain();
I have configured application.properties‬ as explained here with :
server.servlet.context-path=/test
And in my #RestController I have a simple a simple #RequestMapping:
#RequestMapping(value = "/products", method = RequestMethod.GET)
But still when sending a request to http://localhost:8080/test/products I get tomcat - 404 response.
Full code:
package com.siemens;
import java.util.HashMap;
import java.util.Map;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
#RestController
public class ProductServiceController {
private static Map<String, Product> productRepo = new HashMap<>();
static {
Product honey = new Product();
honey.setId("1");
honey.setName("Honey");
productRepo.put(honey.getId(), honey);
Product almond = new Product();
almond.setId("2");
almond.setName("Almond");
productRepo.put(almond.getId(), almond);
}
#RequestMapping(value = "/products", method = RequestMethod.GET)
public ResponseEntity<Object> getProduct() {
return new ResponseEntity<>(productRepo.values(), HttpStatus.OK);
}
}
pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>siemens</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>siemens</name>
<description>Demo project for siemens</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
#SpringBootApplication:
#SpringBootApplication
public class SiemensApplication {
public static void main(String[] args) {
SpringApplication.run(SiemensApplication.class, args);
}
}
Running on tomcat 9, if there is more code or config needed please comment below, thank you.
Any request should 'know' how to get to this controller. I would suggest trying this:
#RestController
#RequestMapping("psc")
public class ProductServiceController {
#RequestMapping(value = "products", method = RequestMethod.GET)
public ResponseEntity<Object> getProduct() {
return new ResponseEntity<>(productRepo.values(), HttpStatus.OK);
}
this way you can send a GET request, to the following url:
http://localhost:8080/test/psc/products
add the #RequestMapping annotation to specify the path to this class(controller)
get rid of the "/" on every #RequestMapping path value (just a cosmetic suggestion)
I have already asked this question for Spring XD. I am now trying to migrate to Spring CDF.
I found this link and I tried to reuse the code there and change the encoding with mine.
I created the following POM:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>tcp-ber-source</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>TCP Ber Source</name>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<tcp-app-starters-common.version>1.1.0.RELEASE</tcp-app-starters-common.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-stream-kafka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud.stream.app</groupId>
<artifactId>tcp-app-starters-common</artifactId>
<version>${tcp-app-starters-common.version}</version>
</dependency>
<dependency>
<groupId>com.example</groupId>
<artifactId>ber-byte-array-serializers</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Configuration:
#EnableBinding(Source.class)
#EnableConfigurationProperties(TcpBerSourceProperties.class)
public class TcpBerSourceConfiguration {
private final Source channels;
private final TcpBerSourceProperties properties;
#Autowired
public TcpSourceConfiguration(final TcpBerSourceProperties properties, final Source channels) {
this.properties = properties;
this.channels = channels;
}
#Bean
public TcpReceivingChannelAdapter adapter(#Qualifier("tcpBerSourceConnectionFactory") final AbstractConnectionFactory connectionFactory) {
final TcpReceivingChannelAdapter adapter = new TcpReceivingChannelAdapter();
adapter.setConnectionFactory(connectionFactory);
adapter.setOutputChannel(this.channels.output());
return adapter;
}
#Bean
public TcpConnectionFactoryFactoryBean tcpBerSourceConnectionFactory(#Qualifier("tcpBerSourceDecoder") final AbstractByteArraySerializer decoder) throws Exception {
final TcpConnectionFactoryFactoryBean factoryBean = new TcpConnectionFactoryFactoryBean();
factoryBean.setType("server");
factoryBean.setPort(this.properties.getPort());
factoryBean.setUsingNio(this.properties.isNio());
factoryBean.setUsingDirectBuffers(this.properties.isUseDirectBuffers());
factoryBean.setLookupHost(this.properties.isReverseLookup());
factoryBean.setDeserializer(decoder);
factoryBean.setSoTimeout(this.properties.getSocketTimeout());
return factoryBean;
}
#Bean
public BerEncoderDecoderFactoryBean tcpBerSourceDecoder() {
final BerEncoderDecoderFactoryBean factoryBean = new BerEncoderDecoderFactoryBean(this.properties.getDecoder());
factoryBean.setMaxMessageSize(this.properties.getBufferSize());
return factoryBean;
}
}
And this FactoryBean:
public class BerEncoderDecoderFactoryBean extends AbstractFactoryBean<AbstractByteArraySerializer> implements ApplicationEventPublisherAware {
private final BerEncoding encoding;
private ApplicationEventPublisher applicationEventPublisher;
private Integer maxMessageSize;
public BerEncoderDecoderFactoryBean(final BerEncoding encoding) {
Assert.notNull(encoding, "'encoding' cannot be null");
this.encoding = encoding;
}
#Override
public void setApplicationEventPublisher(final ApplicationEventPublisher applicationEventPublisher) {
this.applicationEventPublisher = applicationEventPublisher;
}
/**
* The maximum message size allowed when decoding.
* #param maxMessageSize the maximum message size.
*/
public void setMaxMessageSize(final int maxMessageSize) {
this.maxMessageSize = maxMessageSize;
}
#Override
protected AbstractByteArraySerializer createInstance() throws Exception {
final AbstractByteArraySerializer codec;
switch (this.encoding) {
case SPLIT:
codec = new ByteArrayBerSplitSerializer();
break;
case EXTRACT:
codec = new ByteArrayBerExtractSerializer();
break;
default:
throw new IllegalArgumentException("Invalid encoding: " + this.encoding);
}
codec.setApplicationEventPublisher(this.applicationEventPublisher);
if (this.maxMessageSize != null) {
codec.setMaxMessageSize(this.maxMessageSize);
}
return codec;
}
#Override
public Class<?> getObjectType() {
return AbstractByteArraySerializer.class;
}
}
BerEncoding is a simple enum, and TcpBerSourceProperties are pretty straightforward.
Is this the right approach?
If it is, how can I run this? I can't see #SpringBootApplication anywhere on the tcp stream app starters I found on the mentioned link to run as Spring Boot standalone applications?
You have to create your own Spring Boot App class and import the configuration class; see the documentation about creating custom apps.
We generate a standard app (for rabbit and kafka binders) from the starters as explained here.