Some code for WireMock. @Test public void test() throws Exception { String url = “http://localhost:8080/v3”; stubFor(get(urlPathEqualTo(“/v3”)).willReturn(aResponse() .withHeader(“Content-Type”, “application/json”) .withBody(“{ \”id\”: 123, \”name\”: \”John Doe\” }”) .withStatus(200))); stubFor(get(urlPathEqualTo(“/v4”)).willReturn(aResponse() .withHeader(“Content-Type”, “application/json”) .withBody(“{ \”id\”: 123321, \”name\”: \”John Doe\” }”) .withStatus(200))); stubFor(get(urlPathEqualTo(“/v3”)) .withQueryParam(“abc”, equalTo(“5”)) .willReturn(aResponse() .withHeader(“Content-Type”, “application/json”) .withBody(“{ \”id\”: v33, \”name\”: \”John Doe\” }”) .withStatus(200) )); HttpClient client =… Read More »

surefire, failsafe are maven plugin tools. surefire focus on unit test: mvn surefire:test failsafe focus on integration-test: mvn failsafe:integration-test Also need build-helper-maven-plugin to specify the integration test folder <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>build-helper-maven-plugin</artifactId> <version>${mojo.build-helper-maven-plugin.version}</version> <executions> <execution> <id>add-test-source</id> <phase>generate-test-sources</phase> <goals> <goal>add-test-source</goal> </goals> <configuration> <sources> <source>src/it/java</source> </sources> </configuration> </execution> <execution> <id>add-test-resource</id> <phase>generate-test-resources</phase> <goals> <goal>add-test-resource</goal> </goals> <configuration> <resources> <resource> <directory>src/it/resources</directory> </resource>… Read More »

Webflux is async. So log4j with MDC tags may not work correctly natively. So adding below to copy MDC context in each operator changes. Hooks is some advanced usage for customizing action in operators. 1. MdcContextLifterConfiguration @Configuration public class MdcContextLifterConfiguration { private static final String MDC_CONTEXT_REACTOR_KEY = MdcContextLifterConfiguration.class.getName(); @PostConstruct private void contextOperatorHook() { Hooks.onEachOperator( MDC_CONTEXT_REACTOR_KEY, Operators.lift((scannable, coreSubscriber)… Read More »

Try WebFluxTagsProvider, DefaultWebFluxTagsProvider. @Component @Primary public class ObserveWebFilter extends DefaultWebClientExchangeTagsProvider implements WebFluxTagsProvider { private static final WebFluxTagsProvider WEB_FLUX_TAGS_PROVIDER = new DefaultWebFluxTagsProvider(); @Override public Iterable<Tag> httpRequestTags(ServerWebExchange exchange, Throwable ex) { HttpHeaders headers = exchange.getRequest().getHeaders(); return Tags.concat(WEB_FLUX_TAGS_PROVIDER.httpRequestTags(exchange, ex), ObserveUtils.tags(headers)); } public Iterable<Tag> tags(ClientRequest request, ClientResponse response, Throwable throwable) { HttpHeaders headers = request.headers(); return Tags.concat(super.tags(request, response, throwable), ObserveUtils.tags(headers)); }… Read More »

Assume we have below data in DynamoDb. All fields are String type. PK is ID, SK is name. We use DynamoDbEnhancedAsyncClient to access DynamoDb data. To get a specific record with (PK, SK): public static void testGetItem() throws Exception { CompletableFuture<Record> recordFuture = table.getItem(Key.builder() .partitionValue(“001”) .sortValue(33) .build()); System.out.println(recordFuture.get()); } To query only on PK: public static… Read More »