feat(plugin): send additional env payload to plugins on registration

src/main/java/io/cryostat/net/web/http/api/v2/DiscoveryRegistrationHandler.java

@@ -20,6 +20,7 @@
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.util.EnumSet;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -34,6 +35,7 @@
 import io.cryostat.MainModule;
 import io.cryostat.configuration.CredentialsManager;
 import io.cryostat.core.log.Logger;
+import io.cryostat.core.sys.Environment;
 import io.cryostat.discovery.DiscoveryStorage;
 import io.cryostat.discovery.PluginInfo;
 import io.cryostat.discovery.RegistrationException;
@@ -43,6 +45,8 @@
 import io.cryostat.net.web.WebServer;
 import io.cryostat.net.web.http.HttpMimeType;
 import io.cryostat.net.web.http.api.ApiVersion;
+import io.cryostat.platform.PlatformModule;
+import io.cryostat.platform.internal.PlatformDetectionStrategy;
 import io.cryostat.util.StringUtil;
 
 import com.google.gson.Gson;
@@ -55,11 +59,13 @@
 import io.vertx.core.json.JsonObject;
 import org.apache.commons.lang3.StringUtils;
 
-class DiscoveryRegistrationHandler extends AbstractV2RequestHandler<Map<String, String>> {
+class DiscoveryRegistrationHandler extends AbstractV2RequestHandler<Map<String, Object>> {
 
     static final String PATH = "discovery";
+    private final Environment env;
     private final DiscoveryStorage storage;
     private final Lazy<WebServer> webServer;
+    private final Set<PlatformDetectionStrategy<?>> selectedStrategies;
     private final DiscoveryJwtHelper jwtFactory;
     private final Function<String, UUID> uuidFromString;
     private final Logger logger;
@@ -68,15 +74,20 @@ class DiscoveryRegistrationHandler extends AbstractV2RequestHandler<Map<String,
     DiscoveryRegistrationHandler(
             AuthManager auth,
             CredentialsManager credentialsManager,
+            Environment env,
             DiscoveryStorage storage,
             Lazy<WebServer> webServer,
+            @Named(PlatformModule.SELECTED_PLATFORMS)
+                    Set<PlatformDetectionStrategy<?>> selectedStrategies,
             DiscoveryJwtHelper jwt,
             @Named(MainModule.UUID_FROM_STRING) Function<String, UUID> uuidFromString,
             Gson gson,
             Logger logger) {
         super(auth, credentialsManager, gson);
+        this.env = env;
         this.storage = storage;
         this.webServer = webServer;
+        this.selectedStrategies = selectedStrategies;
         this.jwtFactory = jwt;
         this.uuidFromString = uuidFromString;
         this.logger = logger;
@@ -118,7 +129,7 @@ public boolean isAsync() {
     }
 
     @Override
-    public IntermediateResponse<Map<String, String>> handle(RequestParameters params)
+    public IntermediateResponse<Map<String, Object>> handle(RequestParameters params)
             throws Exception {
         String pluginId, realm, priorToken;
         URI callbackUri;
@@ -175,9 +186,15 @@ public IntermediateResponse<Map<String, String>> handle(RequestParameters params
                         realm,
                         address,
                         AbstractDiscoveryJwtConsumingHandler.getResourceUri(hostUrl, pluginId));
-        return new IntermediateResponse<Map<String, String>>()
+        Map<String, String> mergedEnv = new HashMap<>();
+        // FIXME currently only the OpenShiftPlatformStrategy provides any entries for the env map,
+        // but in the future if any more strategies also provide entries then the order here may be
+        // undefined and the map entries may collide and be overwritten. There should be some
+        // prefixing scheme to prevent collisions.
+        selectedStrategies.forEach(s -> mergedEnv.putAll(s.environment(env)));
+        return new IntermediateResponse<Map<String, Object>>()
                 .statusCode(201)
                 .addHeader(HttpHeaders.LOCATION, String.format("%s/%s", path(), pluginId))
-                .body(Map.of("id", pluginId, "token", token));
+                .body(Map.of("id", pluginId, "token", token, "env", mergedEnv));
     }
 }

src/main/java/io/cryostat/platform/internal/PlatformDetectionStrategy.java

@@ -15,6 +15,10 @@
  */
 package io.cryostat.platform.internal;
 
+import java.util.HashMap;
+import java.util.Map;
+
+import io.cryostat.core.sys.Environment;
 import io.cryostat.net.AuthManager;
 import io.cryostat.platform.PlatformClient;
 
@@ -24,4 +28,12 @@ public interface PlatformDetectionStrategy<T extends PlatformClient> {
     T getPlatformClient();
 
     AuthManager getAuthManager();
+
+    default Map<String, String> environment(Environment env) {
+        Map<String, String> map = new HashMap<>();
+        if (env.hasEnv("INSIGHTS_PROXY")) {
+            map.put("INSIGHTS_SVC", env.getEnv("INSIGHTS_PROXY"));
+        }
+        return map;
+    }
 }

src/test/java/io/cryostat/net/web/http/api/v2/DiscoveryRegistrationHandlerTest.java

@@ -27,13 +27,16 @@
 import io.cryostat.MainModule;
 import io.cryostat.configuration.CredentialsManager;
 import io.cryostat.core.log.Logger;
+import io.cryostat.core.sys.Environment;
 import io.cryostat.discovery.DiscoveryStorage;
 import io.cryostat.net.AuthManager;
 import io.cryostat.net.security.ResourceAction;
 import io.cryostat.net.security.jwt.DiscoveryJwtHelper;
 import io.cryostat.net.web.WebServer;
 import io.cryostat.net.web.http.HttpMimeType;
 import io.cryostat.net.web.http.api.ApiVersion;
+import io.cryostat.platform.PlatformClient;
+import io.cryostat.platform.internal.PlatformDetectionStrategy;
 
 import com.google.gson.Gson;
 import io.vertx.core.MultiMap;
@@ -55,9 +58,10 @@
 
 @ExtendWith(MockitoExtension.class)
 class DiscoveryRegistrationHandlerTest {
-    AbstractV2RequestHandler<Map<String, String>> handler;
+    AbstractV2RequestHandler<Map<String, Object>> handler;
     @Mock AuthManager auth;
     @Mock CredentialsManager credentialsManager;
+    @Mock Environment env;
     @Mock DiscoveryStorage storage;
     @Mock WebServer webServer;
     @Mock DiscoveryJwtHelper jwt;
@@ -70,8 +74,10 @@ void setup() {
                 new DiscoveryRegistrationHandler(
                         auth,
                         credentialsManager,
+                        env,
                         storage,
                         () -> webServer,
+                        Set.of(new AllEnvPlatformStrategy(), new FakePlatformStrategy()),
                         jwt,
                         UUID::fromString,
                         gson,
@@ -161,6 +167,8 @@ void shouldRegisterWithStorageAndSendResponse() throws Exception {
             Mockito.when(storage.register(Mockito.anyString(), Mockito.any(URI.class)))
                     .thenReturn(id);
 
+            Mockito.when(env.getEnv()).thenReturn(Map.of("CRYOSTAT", "hello", "TEST", "true"));
+
             Mockito.when(requestParams.getBody())
                     .thenReturn(
                             gson.toJson(
@@ -185,19 +193,77 @@ void shouldRegisterWithStorageAndSendResponse() throws Exception {
                                     Mockito.any(URI.class)))
                     .thenReturn(token);
 
-            IntermediateResponse<Map<String, String>> resp = handler.handle(requestParams);
+            IntermediateResponse<Map<String, Object>> resp = handler.handle(requestParams);
 
             MatcherAssert.assertThat(resp.getStatusCode(), Matchers.equalTo(201));
             MatcherAssert.assertThat(
                     resp.getHeaders(),
                     Matchers.equalTo(Map.of(HttpHeaders.LOCATION, "/api/v2.2/discovery/" + id)));
             MatcherAssert.assertThat(
-                    resp.getBody(), Matchers.equalTo(Map.of("token", token, "id", id.toString())));
+                    resp.getBody(),
+                    Matchers.equalTo(
+                            Map.of(
+                                    "token",
+                                    token,
+                                    "id",
+                                    id.toString(),
+                                    "env",
+                                    Map.of(
+                                            "CRYOSTAT",
+                                            "hello",
+                                            "TEST",
+                                            "true",
+                                            "HELLO",
+                                            "WORLD"))));
 
             Mockito.verify(storage)
                     .register(
                             Mockito.eq("test-realm"),
                             Mockito.eq(URI.create("http://example.com/callback")));
         }
     }
+
+    static class AllEnvPlatformStrategy implements PlatformDetectionStrategy {
+        @Override
+        public Map<String, String> environment(Environment env) {
+            return env.getEnv();
+        }
+
+        @Override
+        public boolean isAvailable() {
+            return true;
+        }
+
+        @Override
+        public PlatformClient getPlatformClient() {
+            throw new UnsupportedOperationException("Unimplemented method 'getPlatformClient'");
+        }
+
+        @Override
+        public AuthManager getAuthManager() {
+            throw new UnsupportedOperationException("Unimplemented method 'getAuthManager'");
+        }
+    }
+
+    static class FakePlatformStrategy implements PlatformDetectionStrategy {
+        @Override
+        public Map<String, String> environment(Environment env) {
+            return Map.of("HELLO", "WORLD");
+        }
+
+        @Override
+        public boolean isAvailable() {
+            return true;
+        }
+
+        @Override
+        public PlatformClient getPlatformClient() {
+            throw new UnsupportedOperationException("Unimplemented method 'getPlatformClient'");
+        }
+
+        @Override
+        public AuthManager getAuthManager() {
+            throw new UnsupportedOperationException("Unimplemented method 'getAuthManager'");
+        }
+    }
 }

src/test/java/itest/DiscoveryPluginIT.java

@@ -21,6 +21,7 @@
 import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
+import java.util.stream.Collectors;
 
 import io.vertx.core.buffer.Buffer;
 import io.vertx.core.json.JsonArray;
@@ -40,6 +41,7 @@ class DiscoveryPluginIT extends StandardSelfTest {
     final URI callback = URI.create("http://localhost:8181/");
     private static volatile String id;
     private static volatile String token;
+    private static volatile Map<String, String> env;
 
     @Test
     @Order(1)
@@ -60,8 +62,12 @@ void shouldBeAbleToRegister() throws InterruptedException, ExecutionException {
         JsonObject info = resp.getJsonObject("data").getJsonObject("result");
         DiscoveryPluginIT.id = info.getString("id");
         DiscoveryPluginIT.token = info.getString("token");
+        DiscoveryPluginIT.env =
+                info.getJsonObject("env").getMap().entrySet().stream()
+                        .collect(Collectors.toMap(k -> k.toString(), v -> v.toString()));
         MatcherAssert.assertThat(id, Matchers.not(Matchers.emptyOrNullString()));
         MatcherAssert.assertThat(token, Matchers.not(Matchers.emptyOrNullString()));
+        MatcherAssert.assertThat(env, Matchers.is(Matchers.equalTo(Map.of())));
     }
 
     @Test