use system property to get path

Author: jaydeluca

instrumentation-docs/build.gradle.kts

@@ -22,6 +22,7 @@ tasks {
   val runAnalysis by registering(JavaExec::class) {
     dependsOn(classes)
 
+    systemProperty("basePath", project.rootDir)
     mainClass.set("io.opentelemetry.instrumentation.docs.DocGeneratorApplication")
     classpath(sourceSets["main"].runtimeClasspath)
   }

instrumentation-docs/src/main/java/io/opentelemetry/instrumentation/docs/DocGeneratorApplication.java

@@ -12,7 +12,6 @@
 import io.opentelemetry.instrumentation.docs.utils.YamlHelper;
 import java.io.BufferedWriter;
 import java.io.IOException;
-import java.net.URL;
 import java.nio.charset.Charset;
 import java.nio.file.Files;
 import java.nio.file.Paths;
@@ -28,7 +27,10 @@ public class DocGeneratorApplication {
 
   public static void main(String[] args) throws IOException {
     // Identify path to repo so we can use absolute paths
-    String baseRepoPath = getRepoPath();
+    String baseRepoPath = System.getProperty("basePath");
+    if (baseRepoPath == null) {
+      baseRepoPath = "./";
+    }
 
     FileManager fileManager = new FileManager(baseRepoPath);
     List<InstrumentationModule> modules = new InstrumentationAnalyzer(fileManager).analyze();
@@ -47,16 +49,6 @@ public static void main(String[] args) throws IOException {
     printStats(modules);
   }
 
-  private static String getRepoPath() throws IOException {
-    URL resource = DocGeneratorApplication.class.getClassLoader().getResource("");
-    if (resource == null) {
-      throw new IOException("Error getting classloader location");
-    }
-    return Paths.get(resource.getPath())
-        .toString()
-        .replace("/instrumentation-docs/build/classes/java/main", "");
-  }
-
   private static void printStats(List<InstrumentationModule> modules) {
     List<InstrumentationModule> metadata =
         modules.stream().filter(m -> m.getMetadata() != null).toList();

instrumentation-docs/src/main/java/io/opentelemetry/instrumentation/docs/InstrumentationAnalyzer.java

@@ -63,7 +63,11 @@ public static List<InstrumentationModule> convertToInstrumentationModules(
   }
 
   private static String sanitizePathName(String rootPath, String path) {
-    return path.replace(rootPath + "/", "").replace("/javaagent", "").replace("/library", "");
+    String result = path.replace(rootPath, "").replace("/javaagent", "").replace("/library", "");
+    if (result.startsWith("/")) {
+      result = result.substring(1);
+    }
+    return result;
   }
 
   /**