test(agent): add Agent itest

pom.xml

@@ -466,6 +466,7 @@
             <java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
             <maven.home>${maven.home}</maven.home>
           </systemPropertyVariables>
+          <skipTests>${skip.ut}</skipTests>
         </configuration>
       </plugin>
       <plugin>

src/test/java/io/cryostat/resources/AgentApplicationResource.java

@@ -0,0 +1,139 @@
+/*
+ * Copyright The Cryostat Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.cryostat.resources;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import io.quarkus.test.common.DevServicesContext;
+import io.quarkus.test.common.QuarkusTestResourceLifecycleManager;
+import org.jboss.logging.Logger;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+import org.testcontainers.containers.GenericContainer;
+import org.testcontainers.containers.Network;
+import org.testcontainers.containers.wait.strategy.HostPortWaitStrategy;
+import org.testcontainers.utility.DockerImageName;
+
+public class AgentApplicationResource
+        implements QuarkusTestResourceLifecycleManager, DevServicesContext.ContextAware {
+
+    private static final String IMAGE_NAME =
+            "quay.io/redhat-java-monitoring/quarkus-cryostat-agent:latest";
+    public static final int PORT = 9977;
+    public static final String ALIAS = "quarkus-cryostat-agent";
+    private static final Map<String, String> envMap =
+            new HashMap<>(
+                    Map.of(
+                            "JAVA_OPTS_APPEND",
+                            """
+                            -javaagent:/deployments/app/cryostat-agent.jar
+                            -Djava.util.logging.manager=org.jboss.logmanager.LogManager
+                            -Dio.cryostat.agent.shaded.org.slf4j.simpleLogger.defaultLogLevel=trace
+                            """,
+                            "QUARKUS_HTTP_PORT",
+                            "9898",
+                            "CRYOSTAT_AGENT_APP_NAME",
+                            "quarkus-cryostat-agent",
+                            "CRYOSTAT_AGENT_WEBCLIENT_TLS_REQUIRED",
+                            "false",
+                            "CRYOSTAT_AGENT_WEBSERVER_HOST",
+                            "0.0.0.0",
+                            "CRYOSTAT_AGENT_WEBSERVER_PORT",
+                            Integer.toString(PORT),
+                            "CRYOSTAT_AGENT_BASEURI_RANGE",
+                            "public",
+                            "CRYOSTAT_AGENT_API_WRITES_ENABLED",
+                            "true"));
+    private static final Logger logger = Logger.getLogger(AgentApplicationResource.class);
+    private Optional<String> containerNetworkId;
+    private AuthProxyContainer authProxy;
+    private GenericContainer<?> container;
+    private AtomicInteger cryostatPort = new AtomicInteger(8081);
+
+    @Override
+    public Map<String, String> start() {
+        Optional<Network> network =
+                containerNetworkId.map(
+                        id ->
+                                new Network() {
+                                    @Override
+                                    public String getId() {
+                                        return id;
+                                    }
+
+                                    @Override
+                                    public void close() {}
+
+                                    @Override
+                                    public Statement apply(
+                                            Statement base, Description description) {
+                                        throw new UnsupportedOperationException(
+                                                "Unimplemented method 'apply'");
+                                    }
+                                });
+        authProxy = new AuthProxyContainer(network, cryostatPort.get());
+
+        container =
+                new GenericContainer<>(DockerImageName.parse(IMAGE_NAME))
+                        .dependsOn(authProxy)
+                        .withExposedPorts(PORT)
+                        .withEnv(envMap)
+                        .withNetworkAliases(ALIAS)
+                        .waitingFor(new HostPortWaitStrategy().forPorts(PORT));
+        network.ifPresent(container::withNetwork);
+        container.addEnv(
+                "CRYOSTAT_AGENT_BASEURI",
+                String.format("http://%s:%d/", AuthProxyContainer.ALIAS, AuthProxyContainer.PORT));
+        container.addEnv("CRYOSTAT_AGENT_CALLBACK", String.format("http://%s:%d/", ALIAS, PORT));
+
+        container.start();
+
+        return Map.of(
+                "quarkus.test.arg-line", "--network-alias=cryostat",
+                "cryostat.agent.tls.required", "false",
+                "cryostat.http.proxy.host", ALIAS,
+                "cryostat.http.proxy.port", Integer.toString(cryostatPort.get()),
+                "quarkus.http.proxy.proxy-address-forwarding", "true",
+                "quarkus.http.proxy.allow-x-forwarded", "true",
+                "quarkus.http.proxy.enable-forwarded-host", "true",
+                "quarkus.http.proxy.enable-forwarded-prefix", "true",
+                "quarkus.http.access-log.pattern", "long",
+                "quarkus.http.access-log.enabled", "true");
+    }
+
+    @Override
+    public void stop() {
+        if (container != null) {
+            container.stop();
+            container.close();
+        }
+        if (authProxy != null) {
+            authProxy.stop();
+            authProxy.close();
+        }
+    }
+
+    @Override
+    public void setIntegrationTestContext(DevServicesContext context) {
+        containerNetworkId = context.containerNetworkId();
+        cryostatPort.set(
+                Integer.parseInt(
+                        context.devServicesProperties().getOrDefault("quarkus.http.port", "8081")));
+    }
+}

src/test/java/io/cryostat/resources/AuthProxyContainer.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright The Cryostat Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.cryostat.resources;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+
+import org.testcontainers.containers.GenericContainer;
+import org.testcontainers.containers.Network;
+import org.testcontainers.containers.wait.strategy.Wait;
+import org.testcontainers.images.builder.Transferable;
+
+public class AuthProxyContainer extends GenericContainer<AuthProxyContainer> {
+
+    private static final String IMAGE_NAME = "quay.io/oauth2-proxy/oauth2-proxy:latest";
+    private static final String CFG_FILE_PATH = "/tmp/auth_proxy_alpha_config.yml";
+    static final int PORT = 8080;
+    static final String ALIAS = "authproxy";
+    private static final Map<String, String> envMap =
+            new HashMap<>(
+                    Map.of(
+                            "OAUTH2_PROXY_REDIRECT_URL",
+                            "http://localhost:8080/oauth2/callback",
+                            "OAUTH2_PROXY_COOKIE_SECRET",
+                            "__24_BYTE_COOKIE_SECRET_",
+                            "OAUTH2_PROXY_SKIP_AUTH_ROUTES",
+                            ".*",
+                            "OAUTH2_PROXY_EMAIL_DOMAINS",
+                            "*"));
+    private static final String ALPHA_CONFIG =
+            """
+server:
+  BindAddress: http://AUTHPROXY_HOST:AUTHPROXY_PORT
+upstreamConfig:
+  proxyRawPath: true
+  upstreams:
+    - id: cryostat
+      path: /
+      uri: http://cryostat:CRYOSTAT_PORT
+providers:
+  - id: dummy
+    name: Unused - Sign In Below
+    clientId: CLIENT_ID
+    clientSecret: CLIENT_SECRET
+    provider: google
+""";
+
+    public AuthProxyContainer(Optional<Network> network, int cryostatPort) {
+        super(IMAGE_NAME);
+        network.ifPresent(this::withNetwork);
+        withCommand(String.format("--alpha-config=%s", CFG_FILE_PATH));
+        withExposedPorts(PORT);
+        withNetworkAliases(ALIAS);
+        withEnv(envMap);
+        withCopyToContainer(
+                Transferable.of(
+                        ALPHA_CONFIG
+                                .replaceAll("AUTHPROXY_HOST", "0.0.0.0")
+                                .replaceAll("AUTHPROXY_PORT", Integer.toString(PORT))
+                                .replaceAll("CRYOSTAT_PORT", Integer.toString(cryostatPort))),
+                CFG_FILE_PATH);
+        waitingFor(Wait.forLogMessage(".*OAuthProxy configured.*", 1));
+    }
+}

src/test/java/itest/AgentDiscoveryIT.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright The Cryostat Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package itest;
+
+import java.time.Duration;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeoutException;
+
+import io.cryostat.resources.AgentApplicationResource;
+import io.cryostat.util.HttpStatusCodeIdentifier;
+
+import io.quarkus.test.common.QuarkusTestResource;
+import io.quarkus.test.junit.QuarkusIntegrationTest;
+import io.vertx.core.buffer.Buffer;
+import io.vertx.core.json.JsonArray;
+import io.vertx.core.json.JsonObject;
+import io.vertx.ext.web.client.HttpResponse;
+import itest.bases.HttpClientTest;
+import junit.framework.AssertionFailedError;
+import org.hamcrest.MatcherAssert;
+import org.hamcrest.Matchers;
+import org.jboss.logging.Logger;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariable;
+
+@QuarkusIntegrationTest
+@QuarkusTestResource(value = AgentApplicationResource.class, restrictToAnnotatedClass = true)
+@EnabledIfEnvironmentVariable(named = "CI_ARCH", matches = "^$")
+@EnabledIfEnvironmentVariable(named = "CI_ARCH", matches = "^amd64|AMD64$")
+public class AgentDiscoveryIT extends HttpClientTest {
+
+    static final Logger logger = Logger.getLogger(AgentDiscoveryIT.class);
+    static final Duration TIMEOUT = Duration.ofSeconds(60);
+
+    @Test
+    void shouldDiscoverTarget() throws InterruptedException, TimeoutException, ExecutionException {
+        long last = System.nanoTime();
+        long elapsed = 0;
+        while (true) {
+            HttpResponse<Buffer> req =
+                    webClient.extensions().get("/api/v4/targets", REQUEST_TIMEOUT_SECONDS);
+            if (HttpStatusCodeIdentifier.isSuccessCode(req.statusCode())) {
+                JsonArray result = req.bodyAsJsonArray();
+                if (result.size() == 1) {
+                    JsonObject obj = result.getJsonObject(0);
+                    MatcherAssert.assertThat(
+                            obj.getString("alias"),
+                            Matchers.equalTo(AgentApplicationResource.ALIAS));
+                    MatcherAssert.assertThat(
+                            obj.getString("connectUrl"),
+                            Matchers.equalTo(
+                                    String.format(
+                                            "http://%s:%d/",
+                                            AgentApplicationResource.ALIAS,
+                                            AgentApplicationResource.PORT)));
+
+                    MatcherAssert.assertThat(obj.getBoolean("agent"), Matchers.is(true));
+                    break;
+                } else if (result.size() > 1) {
+                    throw new IllegalStateException("Discovered too many targets");
+                }
+            }
+
+            long now = System.nanoTime();
+            elapsed += (now - last);
+            last = now;
+            if (Duration.ofNanos(elapsed).compareTo(TIMEOUT) > 0) {
+                throw new AssertionFailedError("Timed out");
+            }
+            Thread.sleep(5_000);
+        }
+    }
+}