Merge pull request #98 from justinuliu/use-the-jre-running-weka

Migrate AutoWeka to the JRE running WEKA

Author: Justin Liu

lib/jna-5.10.0.jar

@@ -0,0 +1,85 @@
+package autoweka;
+
+import com.sun.jna.Library;
+import com.sun.jna.Native;
+
+import java.io.File;
+
+public class SetEnvironmentVariablesForAutoWeka {
+
+    public static LibCWrapper INSTANCE;
+
+    private static final Object library;
+
+    interface Msvcrt extends Library {
+        int _putenv(String name);
+
+        String getenv(String name);
+    }
+
+    interface LibC extends Library {
+        int setenv(String name, String value, int overwrite);
+
+        String getenv(String name);
+
+        int unsetenv(String name);
+    }
+
+    public static class LibCWrapper {
+
+        public int setenv(String name, String value, int overwrite) {
+            if (library instanceof LibC) {
+                return ((LibC) library).setenv(name, value, overwrite);
+            } else {
+                return ((Msvcrt) library)._putenv(name + "=" + value);
+            }
+        }
+
+        public String getenv(String name) {
+            if (library instanceof LibC) {
+                return ((LibC) library).getenv(name);
+            } else {
+                return ((Msvcrt) library).getenv(name);
+            }
+        }
+
+        public int unsetenv(String name) {
+            if (library instanceof LibC) {
+                return ((LibC) library).unsetenv(name);
+            } else {
+                return ((Msvcrt) library)._putenv(name + "=");
+            }
+        }
+    }
+
+    public static boolean needJavaOptions() {
+        String version = System.getProperty("java.version");
+        String major = version.split("\\.")[0];
+        return major.compareTo("1") > 0;
+    }
+
+    static {
+        if (System.getProperty("os.name").contains("Windows")) {
+            library = Native.load("msvcrt", Msvcrt.class);
+        } else {
+            library = Native.load("c", LibC.class);
+        }
+        INSTANCE = new LibCWrapper();
+
+        String javaHome = System.getProperty("java.home");
+        INSTANCE.setenv("JAVA_HOME", javaHome, 1);
+        String pathVar = INSTANCE.getenv("PATH");
+        if (pathVar == null) {
+            pathVar = "";
+        }
+        INSTANCE.setenv("PATH", javaHome + "/bin" + File.pathSeparatorChar + pathVar, 1);
+
+        if (needJavaOptions()) {
+            String existingOps = INSTANCE.getenv("_JAVA_OPTIONS");
+            if (existingOps == null) {
+                existingOps = "";
+            }
+            INSTANCE.setenv("_JAVA_OPTIONS", existingOps + " --add-opens=java.base/java.lang=ALL-UNNAMED", 1);
+        }
+    }
+}

src/java/autoweka/SetEnvironmentVariablesForAutoWeka.java

@@ -174,6 +174,12 @@ static enum Metric {
         resamplingArgsMap.put(Resampling.CrossValidation, "numFolds=10");
         resamplingArgsMap.put(Resampling.MultiLevel, "numLevels=2[$]autoweka.instancegenerators.CrossValidation[$]numFolds=10");
         resamplingArgsMap.put(Resampling.RandomSubSampling, "numSamples=10:percent=66");
+        try {
+            Class.forName("autoweka.SetEnvironmentVariablesForAutoWeka");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+            throw new RuntimeException(e.getMessage());
+        }
     }
     /** Arguments for the default evaluation method. */
     static final String DEFAULT_RESAMPLING_ARGS = resamplingArgsMap.get(DEFAULT_RESAMPLING);
@@ -403,6 +409,10 @@ public void run() {
                                 }
                                 //log.info(line);
                             } else if(line.matches(".*WARN.*")) {
+                                // filter out noisy warning message
+                                if (line.matches(".*Picked up _JAVA_OPTIONS: --add-opens=java.base/java.lang=ALL-UNNAMED.*")) {
+                                    continue;
+                                }
                                 log.warn(line);
                             } else if(line.matches(".*ERROR.*")) {
                                 log.error(line);