feat: add DockerRuntimeOrchestrator with docker-java
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
hsiegeln
@@ -0,0 +1,167 @@
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package net.siegeln.cameleer.saas.runtime;
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import com.github.dockerjava.api.DockerClient;
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import com.github.dockerjava.api.async.ResultCallback;
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import com.github.dockerjava.api.command.BuildImageResultCallback;
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import com.github.dockerjava.api.model.*;
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import com.github.dockerjava.core.DefaultDockerClientConfig;
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import com.github.dockerjava.core.DockerClientImpl;
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import com.github.dockerjava.httpclient5.ApacheDockerHttpClient;
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import jakarta.annotation.PostConstruct;
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import jakarta.annotation.PreDestroy;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.stereotype.Component;
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import java.io.Closeable;
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import java.io.File;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.StandardCopyOption;
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import java.util.Comparator;
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import java.util.List;
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import java.util.Set;
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@Component
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public class DockerRuntimeOrchestrator implements RuntimeOrchestrator {
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private static final Logger log = LoggerFactory.getLogger(DockerRuntimeOrchestrator.class);
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private DockerClient dockerClient;
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@PostConstruct
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public void init() {
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var config = DefaultDockerClientConfig.createDefaultConfigBuilder().build();
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var httpClient = new ApacheDockerHttpClient.Builder()
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.dockerHost(config.getDockerHost())
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.build();
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dockerClient = DockerClientImpl.getInstance(config, httpClient);
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log.info("Docker client initialized, host: {}", config.getDockerHost());
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}
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@PreDestroy
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public void close() throws IOException {
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if (dockerClient != null) {
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dockerClient.close();
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}
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}
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@Override
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public String buildImage(BuildImageRequest request) {
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Path buildDir = null;
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try {
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buildDir = Files.createTempDirectory("cameleer-build-");
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var dockerfile = buildDir.resolve("Dockerfile");
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Files.writeString(dockerfile,
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"FROM " + request.baseImage() + "\nCOPY app.jar /app/app.jar\n");
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Files.copy(request.jarPath(), buildDir.resolve("app.jar"), StandardCopyOption.REPLACE_EXISTING);
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var imageId = dockerClient.buildImageCmd(buildDir.toFile())
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.withTags(Set.of(request.imageTag()))
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.exec(new BuildImageResultCallback())
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.awaitImageId();
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log.info("Built image {} -> {}", request.imageTag(), imageId);
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return imageId;
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} catch (IOException e) {
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throw new RuntimeException("Failed to build image: " + e.getMessage(), e);
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} finally {
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if (buildDir != null) {
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deleteDirectory(buildDir);
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}
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}
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}
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@Override
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public String startContainer(StartContainerRequest request) {
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var envList = request.envVars().entrySet().stream()
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.map(e -> e.getKey() + "=" + e.getValue())
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.toList();
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var hostConfig = HostConfig.newHostConfig()
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.withMemory(request.memoryLimitBytes())
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.withMemorySwap(request.memoryLimitBytes())
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.withCpuShares(request.cpuShares())
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.withNetworkMode(request.network());
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var container = dockerClient.createContainerCmd(request.imageRef())
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.withName(request.containerName())
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.withEnv(envList)
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.withHostConfig(hostConfig)
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.withHealthcheck(new HealthCheck()
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.withTest(List.of("CMD-SHELL",
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"wget -qO- http://localhost:" + request.healthCheckPort() + "/health || exit 1"))
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.withInterval(10_000_000_000L) // 10s
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.withTimeout(5_000_000_000L) // 5s
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.withRetries(3)
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.withStartPeriod(30_000_000_000L)) // 30s
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.exec();
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dockerClient.startContainerCmd(container.getId()).exec();
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log.info("Started container {} ({})", request.containerName(), container.getId());
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return container.getId();
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}
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@Override
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public void stopContainer(String containerId) {
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try {
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dockerClient.stopContainerCmd(containerId).withTimeout(30).exec();
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log.info("Stopped container {}", containerId);
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} catch (Exception e) {
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log.warn("Failed to stop container {}: {}", containerId, e.getMessage());
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}
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}
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@Override
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public void removeContainer(String containerId) {
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try {
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dockerClient.removeContainerCmd(containerId).withForce(true).exec();
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log.info("Removed container {}", containerId);
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} catch (Exception e) {
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log.warn("Failed to remove container {}: {}", containerId, e.getMessage());
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}
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}
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@Override
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public ContainerStatus getContainerStatus(String containerId) {
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try {
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var inspection = dockerClient.inspectContainerCmd(containerId).exec();
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var state = inspection.getState();
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return new ContainerStatus(
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state.getStatus(),
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Boolean.TRUE.equals(state.getRunning()),
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state.getExitCodeLong() != null ? state.getExitCodeLong().intValue() : 0,
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state.getError());
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} catch (Exception e) {
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return new ContainerStatus("not_found", false, -1, e.getMessage());
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}
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}
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@Override
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public void streamLogs(String containerId, LogConsumer consumer) {
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dockerClient.logContainerCmd(containerId)
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.withStdOut(true)
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.withStdErr(true)
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.withFollowStream(true)
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.withTimestamps(true)
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.exec(new ResultCallback.Adapter<Frame>() {
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@Override
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public void onNext(Frame frame) {
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var stream = frame.getStreamType() == StreamType.STDERR ? "stderr" : "stdout";
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consumer.accept(stream, new String(frame.getPayload()).trim(),
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System.currentTimeMillis());
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}
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});
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}
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private void deleteDirectory(Path dir) {
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try {
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Files.walk(dir)
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.sorted(Comparator.reverseOrder())
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.map(Path::toFile)
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.forEach(File::delete);
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} catch (IOException e) {
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log.warn("Failed to clean up build directory: {}", dir, e);
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}
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}
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}
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@@ -0,0 +1,32 @@
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package net.siegeln.cameleer.saas.runtime;
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.*;
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class DockerRuntimeOrchestratorTest {
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@Test
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void runtimeConfig_parseMemoryLimitBytes_megabytes() {
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assertEquals(512 * 1024 * 1024L, parseMemoryLimit("512m"));
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}
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@Test
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void runtimeConfig_parseMemoryLimitBytes_gigabytes() {
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assertEquals(1024L * 1024 * 1024, parseMemoryLimit("1g"));
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}
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@Test
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void runtimeConfig_parseMemoryLimitBytes_bytes() {
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assertEquals(536870912L, parseMemoryLimit("536870912"));
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}
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private long parseMemoryLimit(String limit) {
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var l = limit.trim().toLowerCase();
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if (l.endsWith("g")) {
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return Long.parseLong(l.substring(0, l.length() - 1)) * 1024 * 1024 * 1024;
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} else if (l.endsWith("m")) {
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return Long.parseLong(l.substring(0, l.length() - 1)) * 1024 * 1024;
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}
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return Long.parseLong(l);
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}
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}
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