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The following repository uses Karate and Testcontainers to test a simple API REST endpoint + kafka flow.
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The challenge was using HTTP protocol ONLY.
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Contact me on linkedin for more information.
flowchart TD
subgraph LinuxHost [Linux Host]
subgraph DockerHost [Docker Host]
subgraph DockerCompose [Docker Compose and Network]
subgraph CustomerApp [Spring Boot Customer App]
direction TB
subgraph SpringWeb [Spring Web]
end
subgraph SpringDataJPA [Spring Data JPA]
end
subgraph AvroSerialization [Confluent Avro Serialization]
end
end
subgraph Postgres [Postgres Database]
end
CustomerApp -->|jdbc| Postgres
subgraph SchemaRegistry [Confluent Schema Registry]
end
subgraph Kafka [Kafka Cluster]
KafkaTopic1["Kafka Topic"]
end
subgraph KafbatUI [Kafbat UI API]
end
end
Testcontainers[TestContainer Compose] -->|Manages| DockerCompose
end
subgraph JVM [Java Virtual Machine]
subgraph Junit5Runner [Junit5 Runner]
end
subgraph KarateRunner [Karate Runner]
subgraph CustomerApp [Customer App]
end
subgraph KafbatUI [Kafbat UI]
end
end
end
Junit5Runner -->|Runs| KarateRunner
Junit5Runner -->|Runs| Testcontainers
KarateRunner -->|Interacts with| CustomerApp
KarateRunner -->|Interacts with| KafbatUI
end
Kafka -->|Consumes events| CustomerApp
SchemaRegistry -->|Store schema| Kafka
SchemaRegistry -->|Shares schemas| CustomerApp
KafbatUI -->|Creates topics and Produce messages| Kafka
KafbatUI -->|Creates Schemas| SchemaRegistry
What happens during maven test
- Junits5 runner starts
- Before All
2. Testcontainers starts a Compose "manager" which Boots the following services
- Kafka
- Customer-App
- Kafbat UI
- Schema Registry
- Postgres
- Karate runner starts
- sleep 20 seconds to let all compose services finish booting
- create a schema through Kafbat UI API
- create a topic with enforced validation through Kafbat UI API
- produce a message to the topic through Kafbat UI API
- sleep 3 seconds to let the message be consumed by the customer-app
- read the message customer-app API
- assert the message content
- After all
- Testcontainers instructs the compose manager to stop all services (compose down --remove-orphans)
- Before All
2. Testcontainers starts a Compose "manager" which Boots the following services
For further reference, please consider the following sections:
- Testcontainers
- Testing : Karate
- Spring Boot Customer app
- Schema Registry
- Kafka
- Kafbat UI Swagger
docker build -t customer-app .Logs example
[+] Building 396.1s (16/16) FINISHED docker:default
=> [internal] load build definition from Dockerfile 0.1s
=> => transferring dockerfile: 367B 0.1s
=> [internal] load .dockerignore 0.1s
=> => transferring context: 2B 0.1s
=> [internal] load metadata for docker.io/library/openjdk:17-alpine 33.4s
=> [internal] load metadata for docker.io/library/maven:3.9.5-eclipse-temurin-17-alpine 33.4s
=> [auth] library/openjdk:pull token for registry-1.docker.io 0.0s
=> [auth] library/maven:pull token for registry-1.docker.io 0.0s
=> [build 1/6] FROM docker.io/library/maven:3.9.5-eclipse-temurin-17-alpine@sha256:a30f71650b13e5dd376afa423fdf0996e0a8d548cfd1e05e6114ea114c8a3cf5 0.0s
=> CACHED [stage-1 1/2] FROM docker.io/library/openjdk:17-alpine@sha256:4b6abae565492dbe9e7a894137c966a7485154238902f2f25e9dbd9784383d81 0.0s
=> [internal] load build context 0.3s
=> => transferring context: 8.37kB 0.3s
=> CACHED [build 2/6] WORKDIR /app 0.0s
=> [build 3/6] COPY pom.xml ./ 0.0s
=> [build 4/6] RUN mvn dependency:resolve 327.4s
=> [build 5/6] COPY src ./src 0.0s
=> [build 6/6] RUN mvn clean package -DskipTests 32.7s
=> [stage-1 2/2] COPY --from=build /app/target/*.jar app.jar 0.1s
=> exporting to image 0.6s
=> => exporting layers 0.6s
=> => writing image sha256:9f222c41460575612847ebde5294f019b9281ee56cfac9f4cd0874e48d2f122f 0.0s
=> => naming to docker.io/library/customer-app mvn test -Dtest=CustomerControllerTestLogs example
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------< com.example:testcontainers-simple >------------------
[INFO] Building testcontainers-simple 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- avro-maven-plugin:1.11.3:schema (schemas) @ testcontainers-simple ---
[INFO]
[INFO] --- avro-maven-plugin:1.11.3:protocol (schemas) @ testcontainers-simple ---
[INFO]
[INFO] --- avro-maven-plugin:1.11.3:idl-protocol (schemas) @ testcontainers-simple ---
[INFO]
[INFO] --- maven-resources-plugin:3.3.1:resources (default-resources) @ testcontainers-simple ---
[INFO] Copying 1 resource from src/main/resources to target/classes
[INFO] Copying 2 resources from src/main/resources to target/classes
[INFO]
[INFO] --- maven-compiler-plugin:3.11.0:compile (default-compile) @ testcontainers-simple ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:3.3.1:testResources (default-testResources) @ testcontainers-simple ---
[INFO] Copying 6 resources from src/test/resources to target/test-classes
[INFO]
[INFO] --- maven-compiler-plugin:3.11.0:testCompile (default-testCompile) @ testcontainers-simple ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:3.2.5:test (default-test) @ testcontainers-simple ---
[INFO] Using auto detected provider org.apache.maven.surefire.junitplatform.JUnitPlatformProvider
[INFO]
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running com.example.testcontainerssimple.CustomerControllerTest
09:46:36.126 [main] INFO org.testcontainers.images.PullPolicy -- Image pull policy will be performed by: DefaultPullPolicy()
09:46:36.145 [main] INFO org.testcontainers.utility.ImageNameSubstitutor -- Image name substitution will be performed by: DefaultImageNameSubstitutor (composite of 'ConfigurationFileImageNameSubstitutor' and 'PrefixingImageNameSubstitutor')
09:46:37.353 [main] INFO org.testcontainers.dockerclient.DockerClientProviderStrategy -- Loaded org.testcontainers.dockerclient.UnixSocketClientProviderStrategy from ~/.testcontainers.properties, will try it first
09:46:38.831 [main] INFO org.testcontainers.dockerclient.DockerClientProviderStrategy -- Found Docker environment with local Unix socket (unix:///var/run/docker.sock)
09:46:38.835 [main] INFO org.testcontainers.DockerClientFactory -- Docker host IP address is localhost
09:46:38.868 [main] INFO org.testcontainers.DockerClientFactory -- Connected to docker:
Server Version: 24.0.6
API Version: 1.43
Operating System: Ubuntu 22.04.2 LTS
Total Memory: 15648 MB
09:46:38.868 [main] INFO org.testcontainers.DockerClientFactory -- Checking the system...
09:46:38.870 [main] INFO org.testcontainers.DockerClientFactory -- ✔︎ Docker server version should be at least 1.6.0
09:46:38.953 [main] INFO tc.testcontainers/ryuk:0.5.1 -- Creating container for image: testcontainers/ryuk:0.5.1
09:46:39.445 [main] INFO tc.testcontainers/ryuk:0.5.1 -- Container testcontainers/ryuk:0.5.1 is starting: a516d0bcea2f7ba68dc22c47394688543a31b350836f9029a7e13d58d9490966
09:46:43.802 [main] INFO tc.testcontainers/ryuk:0.5.1 -- Container testcontainers/ryuk:0.5.1 started in PT4.84950881S
09:46:43.889 [main] INFO tc.docker/compose:1.29.2 -- Creating container for image: docker/compose:1.29.2
09:46:54.314 [main] INFO tc.docker/compose:1.29.2 -- Container docker/compose:1.29.2 is starting: ea30f77fe85eae2f98ab730d5f7e02c451ac6fd73a9aaa52a8c56588c72f25d5
09:47:26.070 [main] INFO tc.docker/compose:1.29.2 -- Container docker/compose:1.29.2 started in PT42.1812996S
09:47:26.079 [main] INFO tc.docker/compose:1.29.2 -- Docker Compose container is running for command: up -d
09:47:26.083 [main] INFO tc.docker/compose:1.29.2 -- Docker Compose has finished running
09:47:26.087 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating network "cvrjjs6i81ml_default" with the default driver
09:47:26.087 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating kafka ...
09:47:26.087 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating postgres ...
09:47:26.087 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating postgres ... done
09:47:26.088 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating kafka ... done
09:47:26.088 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating schema-registry ...
09:47:26.088 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating schema-registry ... done
09:47:26.088 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating customer-app ...
09:47:26.088 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating kafbat-ui ...
09:47:26.088 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating kafbat-ui ... done
09:47:26.088 [docker-java-stream--2023330247] INFO tc.docker/compose:1.29.2 -- STDERR: Creating customer-app ... done
09:47:42.493 [main] INFO com.intuit.karate -- karate.env system propertiy was: null
09:47:42.503 [main] INFO com.intuit.karate -- karate.config was: {
"baseUrl": "http://localhost:8079",
"kafbatUiUrl": "http://localhost:8080"
}
09:48:05.781 [main] INFO com.intuit.karate -- [print] {
"partition": 0,
"keySerde": "String",
"valueSerde": "SchemaRegistry",
"key": "{\"id\":1}",
"content": "{\"id\":{\"int\":1},\"name\":{\"string\":\"John Doe\"},\"email\":{\"string\":\"[email protected]\"}}"
}
---------------------------------------------------------
feature: classpath:features/customer.feature
scenarios: 1 | passed: 1 | failed: 0 | time: 28.1768
---------------------------------------------------------
Karate version: 1.4.1
======================================================
elapsed: 44.92 | threads: 1 | thread time: 28.18
features: 1 | skipped: 0 | efficiency: 0.63
scenarios: 1 | passed: 1 | failed: 0
======================================================
HTML report: (paste into browser to view) | Karate version: 1.4.1
file:///mnt/c/Users/Jean-Charles/IdeaProjects/dkat/personal/karate-kafka-ui-gitlab/testcontainers-karate-simple-main/testcontainers-karate-simple-main/target/karate-reports/karate-summary.html
===================================================================
09:48:13.760 [main] INFO tc.docker/compose:1.29.2 -- Creating container for image: docker/compose:1.29.2
09:48:14.087 [main] INFO tc.docker/compose:1.29.2 -- Container docker/compose:1.29.2 is starting: 929e0e5ba207cfe7b6789be4596907acb953d6007fd4a9a11c41352165b891a1
09:49:35.297 [main] INFO tc.docker/compose:1.29.2 -- Container docker/compose:1.29.2 started in PT1M21.536574938S
09:49:35.298 [main] INFO tc.docker/compose:1.29.2 -- Docker Compose container is running for command: down -v
09:49:35.299 [main] INFO tc.docker/compose:1.29.2 -- Docker Compose has finished running
09:49:35.299 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Stopping kafbat-ui ...
09:49:35.299 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Stopping customer-app ...
09:49:35.299 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Stopping schema-registry ...
09:49:35.299 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Stopping kafka ...
09:49:35.299 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Stopping postgres ...
09:49:35.299 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Stopping customer-app ... done
09:49:35.299 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Stopping kafbat-ui ... done
09:49:35.299 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Stopping postgres ... done
09:49:35.299 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Stopping schema-registry ... done
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Stopping kafka ... done
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing kafbat-ui ...
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing customer-app ...
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing schema-registry ...
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing kafka ...
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing postgres ...
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing postgres ... done
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing kafbat-ui ... done
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing schema-registry ... done
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing customer-app ... done
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing kafka ... done
09:49:35.300 [docker-java-stream--685188613] INFO tc.docker/compose:1.29.2 -- STDERR: Removing network cvrjjs6i81ml_default
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 179.6 s -- in com.example.testcontainerssimple.CustomerControllerTest
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 03:29 min
[INFO] Finished at: 2024-08-08T09:49:35+02:00
[INFO] ------------------------------------------------------------------------docker-compose -f docker/docker-compose-kafka.yml up --scale customer-app=0 docker-compose -f docker/docker-compose-kafka.yml down --remove-orphans