From 45f6099eb899d8a669f860d8b36949f09278c1c5 Mon Sep 17 00:00:00 2001
From: Kai Moritz <kai@juplo.de>
Date: Sat, 13 Mar 2021 15:06:42 +0100
Subject: [PATCH] WIP

---
 consumer/pom.xml                              | 15 +++++++
 .../adapter/RemoteUserServiceConsumer.java    | 41 +++++++++++++++++++
 .../adapter/RemoteUserServiceConsumerIT.java  | 11 +++++
 .../juplo/demos/consumer/adapter/UserDTO.java | 13 ++++++
 .../de/juplo/demos/consumer/domain/User.java  | 15 +++++++
 .../demos/consumer/domain/UserService.java    | 10 +++++
 6 files changed, 105 insertions(+)
 create mode 100644 consumer/src/main/java/de/juplo/demos/consumer/adapter/RemoteUserServiceConsumer.java
 create mode 100644 consumer/src/main/java/de/juplo/demos/consumer/adapter/RemoteUserServiceConsumerIT.java
 create mode 100644 consumer/src/main/java/de/juplo/demos/consumer/adapter/UserDTO.java
 create mode 100644 consumer/src/main/java/de/juplo/demos/consumer/domain/User.java
 create mode 100644 consumer/src/main/java/de/juplo/demos/consumer/domain/UserService.java

diff --git a/consumer/pom.xml b/consumer/pom.xml
index d9d8d14..3e70c9f 100644
--- a/consumer/pom.xml
+++ b/consumer/pom.xml
@@ -15,6 +15,7 @@
 	<description>Demo of a Pact Provider</description>
 	<properties>
 		<java.version>11</java.version>
+		<pact.version>4.1.0</pact.version>
 	</properties>
 	<dependencies>
 		<dependency>
@@ -32,6 +33,17 @@
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-api</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>au.com.dius.pact.consumer</groupId>
+			<artifactId>junit5</artifactId>
+			<version>${pact.version}</version>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 
 	<build>
@@ -48,6 +60,9 @@
 					</excludes>
 				</configuration>
 			</plugin>
+			<plugin>
+				<artifactId>maven-failsafe-plugin</artifactId>
+			</plugin>
 		</plugins>
 	</build>
 
diff --git a/consumer/src/main/java/de/juplo/demos/consumer/adapter/RemoteUserServiceConsumer.java b/consumer/src/main/java/de/juplo/demos/consumer/adapter/RemoteUserServiceConsumer.java
new file mode 100644
index 0000000..104339c
--- /dev/null
+++ b/consumer/src/main/java/de/juplo/demos/consumer/adapter/RemoteUserServiceConsumer.java
@@ -0,0 +1,41 @@
+package de.juplo.demos.consumer.adapter;
+
+import de.juplo.demos.consumer.domain.User;
+import de.juplo.demos.consumer.domain.UserService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.client.RestTemplate;
+
+import java.util.Optional;
+import java.util.UUID;
+
+
+@RequiredArgsConstructor
+public class RemoteUserServiceConsumer implements UserService
+{
+  private String uriTemplate;
+  private RestTemplate restTemplate;
+
+
+  @Override
+  public Optional<User> getUser(UUID id) {
+    ResponseEntity<UserDTO> response =
+        restTemplate.getForEntity(uriTemplate, UserDTO.class, id);
+    HttpStatus status = response.getStatusCode();
+    UserDTO dto = response.getBody();
+    switch (response.getStatusCode()) {
+      case OK:
+        return
+            Optional.of(
+                User.builder()
+                    .id(dto.id)
+                    .email(dto.email)
+                    .build());
+      case NOT_FOUND:
+        return Optional.empty();
+      default:
+        throw new RuntimeException(status.toString());
+    }
+  }
+}
diff --git a/consumer/src/main/java/de/juplo/demos/consumer/adapter/RemoteUserServiceConsumerIT.java b/consumer/src/main/java/de/juplo/demos/consumer/adapter/RemoteUserServiceConsumerIT.java
new file mode 100644
index 0000000..2a33f89
--- /dev/null
+++ b/consumer/src/main/java/de/juplo/demos/consumer/adapter/RemoteUserServiceConsumerIT.java
@@ -0,0 +1,11 @@
+package de.juplo.demos.consumer.adapter;
+
+import org.junit.jupiter.api.extension.ExtendWith;
+
+
+@ExtendWith(PactConsumerTestExt.class)
+@PactTestFor(providerName = "UsersProvider")
+public class RemoteUserServiceConsumerIT
+{
+
+}
diff --git a/consumer/src/main/java/de/juplo/demos/consumer/adapter/UserDTO.java b/consumer/src/main/java/de/juplo/demos/consumer/adapter/UserDTO.java
new file mode 100644
index 0000000..bcf2692
--- /dev/null
+++ b/consumer/src/main/java/de/juplo/demos/consumer/adapter/UserDTO.java
@@ -0,0 +1,13 @@
+package de.juplo.demos.consumer.adapter;
+
+import lombok.Setter;
+
+import java.util.UUID;
+
+
+@Setter
+public class UserDTO
+{
+  UUID id;
+  String email;
+}
diff --git a/consumer/src/main/java/de/juplo/demos/consumer/domain/User.java b/consumer/src/main/java/de/juplo/demos/consumer/domain/User.java
new file mode 100644
index 0000000..521ad27
--- /dev/null
+++ b/consumer/src/main/java/de/juplo/demos/consumer/domain/User.java
@@ -0,0 +1,15 @@
+package de.juplo.demos.consumer.domain;
+
+import lombok.Builder;
+import lombok.Data;
+
+import java.util.UUID;
+
+
+@Data
+@Builder
+public class User
+{
+  private UUID id;
+  private String email;
+}
diff --git a/consumer/src/main/java/de/juplo/demos/consumer/domain/UserService.java b/consumer/src/main/java/de/juplo/demos/consumer/domain/UserService.java
new file mode 100644
index 0000000..b65f4eb
--- /dev/null
+++ b/consumer/src/main/java/de/juplo/demos/consumer/domain/UserService.java
@@ -0,0 +1,10 @@
+package de.juplo.demos.consumer.domain;
+
+import java.util.Optional;
+import java.util.UUID;
+
+
+public interface UserService
+{
+  Optional<User> getUser(UUID id);
+}
-- 
2.20.1