The maven.multiModuleProjectDirectory is badly set when using -f [path-to-pom], fixes #484

client/src/main/java/org/mvndaemon/mvnd/client/DaemonParameters.java

@@ -31,6 +31,7 @@ import java.util.Map;
 import java.util.Optional;
 import java.util.Properties;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.function.IntUnaryOperator;
 import java.util.function.Supplier;
@@ -204,9 +205,13 @@ public class DaemonParameters {
     }
 
     public Path multiModuleProjectDirectory() {
+        return multiModuleProjectDirectory(userDir());
+    }
+
+    public Path multiModuleProjectDirectory(Path projectDir) {
         return value(Environment.MAVEN_MULTIMODULE_PROJECT_DIRECTORY)
                 .orSystemProperty()
-                .orDefault(() -> findDefaultMultimoduleProjectDirectory(userDir()))
+                .orDefault(() -> findDefaultMultimoduleProjectDirectory(projectDir))
                 .asPath()
                 .toAbsolutePath().normalize();
     }
@@ -257,6 +262,13 @@ public class DaemonParameters {
         return property(Environment.MAVEN_SETTINGS).asPath();
     }
 
+    /**
+     * @return path to {@code pom.xml} or {@code null}
+     */
+    public Path file() {
+        return value(Environment.MAVEN_FILE).asPath();
+    }
+
     /**
      * @return absolute normalized path to local Maven repository or {@code null} if the server is supposed to use the
      *         default
@@ -292,16 +304,18 @@ public class DaemonParameters {
      * @return            a new {@link DaemonParameters} with {@code userDir} set to the given {@code newUserDir}
      */
     public DaemonParameters cd(Path newUserDir) {
-        return new DaemonParameters(new PropertiesBuilder()
+        return derive(b -> b.put(Environment.USER_DIR, newUserDir));
-                .putAll(this.properties)
-                .put(Environment.USER_DIR, newUserDir));
     }
 
     public DaemonParameters withJdkJavaOpts(String opts) {
         String org = this.properties.getOrDefault(Environment.JDK_JAVA_OPTIONS.getProperty(), "");
-        return new DaemonParameters(new PropertiesBuilder()
+        return derive(b -> b.put(Environment.JDK_JAVA_OPTIONS, org + opts));
-                .putAll(this.properties)
+    }
-                .put(Environment.JDK_JAVA_OPTIONS, org + opts));
+
+    protected DaemonParameters derive(Consumer<PropertiesBuilder> customizer) {
+        PropertiesBuilder builder = new PropertiesBuilder().putAll(this.properties);
+        customizer.accept(builder);
+        return new DaemonParameters(builder);
     }
 
     public Duration keepAlive() {

client/src/main/java/org/mvndaemon/mvnd/client/DefaultClient.java

@@ -251,6 +251,17 @@ public class DefaultClient implements Client {
             }
             Environment.MVND_TERMINAL_WIDTH.addCommandLineOption(args, Integer.toString(output.getTerminalWidth()));
 
+            Path dir;
+            if (Environment.MAVEN_FILE.hasCommandLineOption(args)) {
+                dir = parameters.userDir().resolve(Environment.MAVEN_FILE.getCommandLineOption(args));
+                if (Files.isRegularFile(dir)) {
+                    dir = dir.getParent();
+                }
+                dir = dir.normalize();
+            } else {
+                dir = parameters.userDir();
+            }
+
             final DaemonConnector connector = new DaemonConnector(parameters, registry);
             try (DaemonClientConnection daemon = connector.connect(output)) {
                 output.setDaemonId(daemon.getDaemon().getId());
@@ -260,7 +271,7 @@ public class DefaultClient implements Client {
                 daemon.dispatch(new Message.BuildRequest(
                         args,
                         parameters.userDir().toString(),
-                        parameters.multiModuleProjectDirectory().toString(),
+                        parameters.multiModuleProjectDirectory(dir).toString(),
                         System.getenv()));
 
                 output.accept(Message

common/src/main/java/org/mvndaemon/mvnd/common/Environment.java

@@ -96,6 +96,8 @@ public enum Environment {
     MAVEN_REPO_LOCAL("maven.repo.local", null, null, OptionType.PATH, Flags.NONE),
     /** The location of the maven settings file */
     MAVEN_SETTINGS("maven.settings", null, null, OptionType.PATH, Flags.NONE, "mvn:-s", "mvn:--settings"),
+    /** The pom or directory to build */
+    MAVEN_FILE(null, null, null, OptionType.PATH, Flags.NONE, "mvn:-f", "mvn:--file"),
     /** The root directory of the current multi module Maven project */
     MAVEN_MULTIMODULE_PROJECT_DIRECTORY("maven.multiModuleProjectDirectory", null, null, OptionType.PATH, Flags.NONE),
     /** Log file */

integration-tests/src/test/java/org/mvndaemon/mvnd/it/SpecificFileNativeIT.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright 2021 the original author or 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 org.mvndaemon.mvnd.it;
+
+import java.io.IOException;
+import java.nio.file.Path;
+import javax.inject.Inject;
+import org.junit.jupiter.api.Test;
+import org.mvndaemon.mvnd.assertj.TestClientOutput;
+import org.mvndaemon.mvnd.client.Client;
+import org.mvndaemon.mvnd.junit.ClientFactory;
+import org.mvndaemon.mvnd.junit.MvndNativeTest;
+import org.mvndaemon.mvnd.junit.TestParameters;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@MvndNativeTest(projectDir = "src/test/projects/specific-file")
+public class SpecificFileNativeIT {
+
+    @Inject
+    ClientFactory clientFactory;
+
+    @Inject
+    TestParameters parameters;
+
+    @Test
+    void version() throws IOException, InterruptedException {
+        TestClientOutput output = new TestClientOutput();
+
+
+        Path prj1 = parameters.getTestDir().resolve("project/prj1").toAbsolutePath();
+        Path prj2 = parameters.getTestDir().resolve("project/prj2").toAbsolutePath();
+
+        Client cl = clientFactory.newClient(parameters.clearMavenMultiModuleProjectDirectory().cd(prj1));
+
+        cl.execute(output, "org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate",
+                "-Dexpression=maven.multiModuleProjectDirectory", "-f", "../prj2/pom.xml", "-e").assertSuccess();
+        assertTrue(output.getMessages().stream()
+                .anyMatch(m -> m.toString().contains(prj2.toString())), "Output should contain " + prj2);
+    }
+
+    protected boolean isNative() {
+        return true;
+    }
+}

integration-tests/src/test/java/org/mvndaemon/mvnd/it/SpecificFileTest.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2021 the original author or 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 org.mvndaemon.mvnd.it;
+
+import org.mvndaemon.mvnd.junit.MvndTest;
+
+@MvndTest(projectDir = "src/test/projects/specific-file")
+public class SpecificFileTest extends SpecificFileNativeIT {
+    protected boolean isNative() {
+        return false;
+    }
+
+}

integration-tests/src/test/java/org/mvndaemon/mvnd/junit/TestParameters.java

@@ -43,7 +43,10 @@ public class TestParameters extends DaemonParameters {
                 .put(Environment.MVND_MAX_LOST_KEEP_ALIVE, maxLostKeepAlive)
                 .put(Environment.MVND_MIN_THREADS, TEST_MIN_THREADS));
         this.testDir = testDir;
+    }
 
+    public DaemonParameters clearMavenMultiModuleProjectDirectory() {
+        return derive(b -> b.put(Environment.MAVEN_MULTIMODULE_PROJECT_DIRECTORY, null));
     }
 
     public Path getTestDir() {

integration-tests/src/test/projects/specific-file/prj1/.mvn/maven.config

@@ -0,0 +1,3 @@
+-Dmaven.wagon.httpconnectionManager.ttlSeconds=120
+-Dmaven.wagon.http.retryHandler.requestSentEnabled=true
+-Dmaven.wagon.http.retryHandler.count=10

integration-tests/src/test/projects/specific-file/prj1/pom.xml

@@ -0,0 +1,27 @@
+<!--
+
+    Copyright 2021 the original author or 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.
+
+-->
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.mvndaemon.mvnd.test.specific-file</groupId>
+    <artifactId>specific-file-prj1</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>pom</packaging>
+
+</project>

integration-tests/src/test/projects/specific-file/prj2/.mvn/maven.config

@@ -0,0 +1,3 @@
+-Dmaven.wagon.httpconnectionManager.ttlSeconds=120
+-Dmaven.wagon.http.retryHandler.requestSentEnabled=true
+-Dmaven.wagon.http.retryHandler.count=10

integration-tests/src/test/projects/specific-file/prj2/pom.xml

@@ -0,0 +1,27 @@
+<!--
+
+    Copyright 2021 the original author or 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.
+
+-->
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.mvndaemon.mvnd.test.specific-file</groupId>
+    <artifactId>specific-file-prj2</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>pom</packaging>
+
+</project>