fix(local publication): triggering compilation of zenoh jni when publ…

…ishing jvm to maven local (#128)

.github/workflows/publish-jvm.yml

@@ -172,6 +172,6 @@ jobs:
       - name: Gradle Publish JVM Package
         uses: gradle/gradle-build-action@v2
         with:
-          arguments: publishJvmPublicationToGithubPackagesRepository ${{ env.PUB_MODE }}
+          arguments: publishJvmPublicationToGithubPackagesRepository -PgithubPublish=true ${{ env.PUB_MODE }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

README.md

@@ -155,10 +155,10 @@ and in case of targetting Android you'll also need:
 To publish a library for a JVM project into Maven local, run
 
 ```bash
-gradle publishJvmPublicationToMavenLocal
+gradle -Prelease=true publishJvmPublicationToMavenLocal
 ```
 
-This will first, trigger the compilation of Zenoh-JNI, and second publish the library into maven local, containing the native library
+This will first, trigger the compilation of Zenoh-JNI in release (if you want debug, specify `-Prelease=false`), and second publish the library into maven local, containing the native library
 as a resource that will be loaded during runtime.
 
 :warning: The native library will be compiled against the default rustup target on your machine, so although it may work fine
@@ -263,13 +263,7 @@ gradle zenoh-kotlin:dokkaHtml
 
 ## Running the tests
 
-To run the tests, we must first build the native library
-```bash
-cd zenoh-jni
-cargo build
-```
-
-and then run:
+To run the tests, run:
 
 ```bash
 gradle jvmTest

zenoh-kotlin/build.gradle.kts

@@ -23,6 +23,10 @@ plugins {
 }
 
 val androidEnabled = project.findProperty("android")?.toString()?.toBoolean() == true
+val release = project.findProperty("release")?.toString()?.toBoolean() == true
+val githubPublish = project.findProperty("githubPublish")?.toString()?.toBoolean() == true
+
+var buildMode = if (release) BuildMode.RELEASE else BuildMode.DEBUG
 
 if (androidEnabled) {
     apply(plugin = "com.android.library")
@@ -39,7 +43,7 @@ kotlin {
             kotlinOptions.jvmTarget = "11"
         }
         testRuns["test"].executionTask.configure {
-            val zenohPaths = "../zenoh-jni/target/debug"
+            val zenohPaths = "../zenoh-jni/target/$buildMode"
             jvmArgs("-Djava.library.path=$zenohPaths")
         }
     }
@@ -71,13 +75,16 @@ kotlin {
             }
         }
         val jvmMain by getting {
-            resources.srcDir("../zenoh-jni/target/release").include(arrayListOf("*.dylib", "*.so", "*.dll"))
-
-            // The line below is intended to load the native libraries that are crosscompiled on GitHub actions when publishing a JVM package.
-            resources.srcDir("../jni-libs").include("*/**")
+            if (githubPublish) {
+                // The line below is intended to load the native libraries that are crosscompiled on GitHub actions when publishing a JVM package.
+                resources.srcDir("../jni-libs").include("*/**")
+            } else {
+                resources.srcDir("../zenoh-jni/target/$buildMode").include(arrayListOf("*.dylib", "*.so", "*.dll"))
+            }
         }
+
         val jvmTest by getting {
-            resources.srcDir("../zenoh-jni/target/debug").include(arrayListOf("*.dylib", "*.so", "*.dll"))
+            resources.srcDir("../zenoh-jni/target/$buildMode").include(arrayListOf("*.dylib", "*.so", "*.dll"))
         }
     }
 
@@ -103,7 +110,7 @@ tasks.withType<Test> {
     doFirst {
         // The line below is added for the Android Unit tests which are equivalent to the JVM tests.
         // For them to work we need to specify the path to the native library as a system property and not as a jvmArg.
-        systemProperty("java.library.path", "../zenoh-jni/target/debug")
+        systemProperty("java.library.path", "../zenoh-jni/target/$buildMode")
     }
 }
 
@@ -114,6 +121,51 @@ tasks.whenObjectAdded {
     }
 }
 
+tasks.named("compileKotlinJvm") {
+    dependsOn("buildZenohJni")
+}
+
+tasks.register("buildZenohJni") {
+    doLast {
+        if (!githubPublish) {
+            // This is intended for local publications. For publications done through GitHub workflows,
+            // the zenoh-jni build is achieved and loaded differently from the CI
+            buildZenohJNI(buildMode)
+        }
+    }
+}
+
+fun buildZenohJNI(mode: BuildMode = BuildMode.DEBUG) {
+    val cargoCommand = mutableListOf("cargo", "build")
+
+    if (mode == BuildMode.RELEASE) {
+        cargoCommand.add("--release")
+    }
+
+    val result = project.exec {
+        commandLine(*(cargoCommand.toTypedArray()), "--manifest-path", "../zenoh-jni/Cargo.toml")
+    }
+
+    if (result.exitValue != 0) {
+        throw GradleException("Failed to build Zenoh-JNI.")
+    }
+
+    Thread.sleep(1000)
+}
+
+enum class BuildMode {
+    DEBUG {
+        override fun toString(): String {
+            return "debug"
+        }
+    },
+    RELEASE {
+        override fun toString(): String {
+            return "release"
+        }
+    }
+}
+
 fun Project.configureAndroid() {
     extensions.configure<com.android.build.gradle.LibraryExtension>("android") {
         namespace = "io.zenoh"