Deleting code using @IgnoreJRERequirement for Java 5 compatibility.

cli/src/main/java/hudson/cli/CLI.java

@@ -32,7 +32,6 @@ import hudson.remoting.RemoteInputStream;
 import hudson.remoting.RemoteOutputStream;
 import hudson.remoting.SocketInputStream;
 import hudson.remoting.SocketOutputStream;
-import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement;
 
 import javax.crypto.SecretKey;
 import javax.crypto.spec.SecretKeySpec;
@@ -592,10 +591,7 @@ public class CLI {
         return pemString.contains("4,ENCRYPTED");
     }
     
-    @SuppressWarnings("Since15")
-    @IgnoreJRERequirement
     private static String askForPasswd(String filePath){
-        try {
             Console cons = System.console();
             String passwd = null;
             if (cons != null){
@@ -603,9 +599,6 @@ public class CLI {
                 passwd = String.valueOf(p);
             }
             return passwd;
-        } catch (LinkageError e) {
-            throw new Error("Your private key is encrypted, but we need Java6 to ask you password safely",e);
-        }
     }
     
     /**

core/src/main/java/hudson/Functions.java

@@ -140,7 +140,6 @@ import org.apache.commons.jelly.XMLOutput;
 import org.apache.commons.jexl.parser.ASTSizeFunction;
 import org.apache.commons.jexl.util.Introspector;
 import org.apache.commons.lang.StringUtils;
-import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement;
 import org.jvnet.tiger_types.Types;
 import org.kohsuke.stapler.Ancestor;
 import org.kohsuke.stapler.Stapler;
@@ -1126,7 +1125,6 @@ public class Functions {
         return sorted;
     }
 
-    @IgnoreJRERequirement
     public static ThreadInfo[] getThreadInfos() {
         ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
         return mbean.dumpAllThreads(mbean.isObjectMonitorUsageSupported(),mbean.isSynchronizerUsageSupported());
@@ -1190,20 +1188,14 @@ public class Functions {
     }
 
     /**
-     * Are we running on JRE6 or above?
+     * @deprecated Now always true.
      */
-    @IgnoreJRERequirement
+    @Deprecated
     public static boolean isMustangOrAbove() {
-        try {
-            System.console();
-            return true;
-        } catch(LinkageError e) {
-            return false;
-        }
+        return true;
     }
 
     // ThreadInfo.toString() truncates the stack trace by first 8, so needed my own version
-    @IgnoreJRERequirement
     public static String dumpThreadInfo(ThreadInfo ti, ThreadGroupMap map) {
         String grp = map.getThreadGroup(ti);
         StringBuilder sb = new StringBuilder("\"" + ti.getThreadName() + "\"" +

core/src/main/java/hudson/Util.java

@@ -42,7 +42,6 @@ import org.apache.tools.ant.taskdefs.Copy;
 import org.apache.tools.ant.types.FileSet;
 import jnr.posix.FileStat;
 import jnr.posix.POSIX;
-import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement;
 
 import javax.crypto.SecretKey;
 import javax.crypto.spec.SecretKeySpec;
@@ -259,16 +258,11 @@ public class Util {
     /**
      * Makes the given file writable by any means possible.
      */
-    @IgnoreJRERequirement
     private static void makeWritable(File f) {
-        // try JDK6-way of doing it.
-        try {
-            if (f.setWritable(true)) {
-                return;
-            }
-        } catch (NoSuchMethodError e) {
-            // not JDK6
+        if (f.setWritable(true)) {
+            return;
         }
+        // TODO do we still need to try anything else?
 
         // try chmod. this becomes no-op if this is not Unix.
         try {
@@ -1378,17 +1372,9 @@ public class Util {
      * Loads a key/value pair string as {@link Properties}
      * @since 1.392
      */
-    @IgnoreJRERequirement
     public static Properties loadProperties(String properties) throws IOException {
         Properties p = new Properties();
-        try {
-            p.load(new StringReader(properties));
-        } catch (NoSuchMethodError e) {
-            // load(Reader) method is only available on JDK6.
-            // this fall back version doesn't work correctly with non-ASCII characters,
-            // but there's no other easy ways out it seems.
-            p.load(new ByteArrayInputStream(properties.getBytes()));
-        }
+        p.load(new StringReader(properties));
         return p;
     }
 

core/src/main/java/hudson/diagnosis/HudsonHomeDiskUsageChecker.java

@@ -26,7 +26,6 @@ package hudson.diagnosis;
 import hudson.Extension;
 import jenkins.model.Jenkins;
 import hudson.model.PeriodicWork;
-import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement;
 
 import java.util.logging.Logger;
 
@@ -42,9 +41,7 @@ public class HudsonHomeDiskUsageChecker extends PeriodicWork {
         return HOUR;
     }
 
-    @IgnoreJRERequirement
     protected void doRun() {
-        try {
             long free = Jenkins.getInstance().getRootDir().getUsableSpace();
             long total = Jenkins.getInstance().getRootDir().getTotalSpace();
             if(free<=0 || total<=0) {
@@ -61,11 +58,6 @@ public class HudsonHomeDiskUsageChecker extends PeriodicWork {
             // it's AND and not OR so that small Hudson home won't get a warning,
             // and similarly, if you have a 1TB disk, you don't get a warning when you still have 100GB to go.
             HudsonHomeDiskUsageMonitor.get().activated = (total/free>10 && free< FREE_SPACE_THRESHOLD);
-        } catch (LinkageError _) {
-            // pre Mustang
-            LOGGER.info("Not on JDK6. Cannot monitor JENKINS_HOME disk usage");
-            cancel();
-        }
     }
 
     private static final Logger LOGGER = Logger.getLogger(HudsonHomeDiskUsageChecker.class.getName());

core/src/main/java/hudson/node_monitors/DiskSpaceMonitor.java

@@ -25,7 +25,6 @@ package hudson.node_monitors;
 
 import hudson.Extension;
 import hudson.FilePath;
-import hudson.Functions;
 import hudson.model.Computer;
 import hudson.remoting.Callable;
 import jenkins.model.Jenkins;
@@ -76,7 +75,6 @@ public class DiskSpaceMonitor extends AbstractDiskSpaceMonitor {
 
     @Extension
     public static DiskSpaceMonitorDescriptor install() {
-        if(Functions.isMustangOrAbove())    return DESCRIPTOR;
-        return null;
+        return DESCRIPTOR;
     }
 }

core/src/main/java/hudson/node_monitors/DiskSpaceMonitorDescriptor.java

@@ -24,12 +24,10 @@
 package hudson.node_monitors;
 
 import hudson.FilePath.FileCallable;
-import hudson.model.Computer;
 import hudson.remoting.VirtualChannel;
 import hudson.Util;
 import hudson.slaves.OfflineCause;
 import hudson.node_monitors.DiskSpaceMonitorDescriptor.DiskSpace;
-import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement;
 
 import java.io.File;
 import java.io.IOException;
@@ -161,16 +159,10 @@ public abstract class DiskSpaceMonitorDescriptor extends AbstractAsyncNodeMonito
 
     protected static final class GetUsableSpace implements FileCallable<DiskSpace> {
         public GetUsableSpace() {}
-        @IgnoreJRERequirement
         public DiskSpace invoke(File f, VirtualChannel channel) throws IOException {
-            try {
                 long s = f.getUsableSpace();
                 if(s<=0)    return null;
                 return new DiskSpace(f.getCanonicalPath(), s);
-            } catch (LinkageError e) {
-                // pre-mustang
-                return null;
-            }
         }
         private static final long serialVersionUID = 1L;
     }

core/src/main/java/hudson/node_monitors/TemporarySpaceMonitor.java

@@ -26,13 +26,11 @@ package hudson.node_monitors;
 import hudson.Extension;
 import hudson.FilePath;
 import hudson.FilePath.FileCallable;
-import hudson.Functions;
 import hudson.model.Computer;
 import hudson.remoting.Callable;
 import jenkins.model.Jenkins;
 import hudson.node_monitors.DiskSpaceMonitorDescriptor.DiskSpace;
 import hudson.remoting.VirtualChannel;
-import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement;
 import org.kohsuke.stapler.DataBoundConstructor;
 
 import java.io.File;
@@ -78,24 +76,17 @@ public class TemporarySpaceMonitor extends AbstractDiskSpaceMonitor {
 
     @Extension
     public static DiskSpaceMonitorDescriptor install() {
-        if(Functions.isMustangOrAbove())    return DESCRIPTOR;
-        return null;
+        return DESCRIPTOR;
     }
     
     protected static final class GetTempSpace implements FileCallable<DiskSpace> {
-        @IgnoreJRERequirement
         public DiskSpace invoke(File f, VirtualChannel channel) throws IOException {
-            try {
                 // if the disk is really filled up we can't even create a single file,
                 // so calling File.createTempFile and figuring out the directory won't reliably work.
                 f = new File(System.getProperty("java.io.tmpdir"));
                 long s = f.getUsableSpace();
                 if(s<=0)    return null;
                 return new DiskSpace(f.getCanonicalPath(), s);
-            } catch (LinkageError e) {
-                // pre-mustang
-                return null;
-            }
         }
         private static final long serialVersionUID = 1L;
     }

core/src/main/java/hudson/security/AbstractPasswordBasedSecurityRealm.java

@@ -15,7 +15,6 @@ import org.acegisecurity.providers.dao.AbstractUserDetailsAuthenticationProvider
 import org.acegisecurity.userdetails.UserDetails;
 import org.acegisecurity.userdetails.UserDetailsService;
 import org.acegisecurity.userdetails.UsernameNotFoundException;
-import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement;
 import org.kohsuke.args4j.Option;
 import org.springframework.dao.DataAccessException;
 import org.springframework.web.context.WebApplicationContext;
@@ -141,7 +140,6 @@ public abstract class AbstractPasswordBasedSecurityRealm extends SecurityRealm i
      * Asks for the password.
      */
     private static class InteractivelyAskForPassword implements Callable<String,IOException> {
-        @IgnoreJRERequirement
         public String call() throws IOException {
             Console console = System.console();
             if (console == null)    return null;    // no terminal

core/src/main/java/hudson/tools/ZipExtractionInstaller.java

@@ -30,12 +30,10 @@ import hudson.FilePath.FileCallable;
 import hudson.ProxyConfiguration;
 import hudson.Util;
 import hudson.Functions;
-import hudson.os.PosixAPI;
 import hudson.model.Node;
 import hudson.model.TaskListener;
 import hudson.remoting.VirtualChannel;
 import hudson.util.FormValidation;
-import hudson.util.jna.GNUCLibrary;
 
 import java.io.File;
 import java.io.IOException;
@@ -45,7 +43,6 @@ import java.net.URL;
 import java.net.URLConnection;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.QueryParameter;
-import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement;
 
 /**
  * Installs a tool into the Hudson working area by downloading and unpacking a ZIP file.
@@ -126,20 +123,9 @@ public class ZipExtractionInstaller extends ToolInstaller {
                 process(d);
             return null;
         }
-        @IgnoreJRERequirement
         private void process(File f) {
             if (f.isFile()) {
-                if(Functions.isMustangOrAbove())
-                    f.setExecutable(true, false);
-                else {
-                    try {
-                        GNUCLibrary.LIBC.chmod(f.getAbsolutePath(),0755);
-                    } catch (LinkageError e) {
-                        // if JNA is unavailable, fall back.
-                        // we still prefer to try JNA first as PosixAPI supports even smaller platforms.
-                        PosixAPI.jnr().chmod(f.getAbsolutePath(),0755);
-                    }
-                }
+                f.setExecutable(true, false);
             } else {
                 File[] kids = f.listFiles();
                 if (kids != null) {

core/src/main/java/hudson/util/RemotingDiagnostics.java

@@ -92,21 +92,10 @@ public final class RemotingDiagnostics {
     private static final class GetThreadDump implements Callable<Map<String,String>,RuntimeException> {
         public Map<String,String> call() {
             Map<String,String> r = new LinkedHashMap<String,String>();
-            try {
                 ThreadInfo[] data = Functions.getThreadInfos();
                 Functions.ThreadGroupMap map = Functions.sortThreadsAndGetGroupMap(data);
                 for (ThreadInfo ti : data)
                     r.put(ti.getThreadName(),Functions.dumpThreadInfo(ti,map));
-            } catch (LinkageError _) {
-                // not in JDK6. fall back to JDK5
-                r.clear();
-                for (Map.Entry<Thread,StackTraceElement[]> t : Functions.dumpAllThreads().entrySet()) {
-                    StringBuilder buf = new StringBuilder();
-                    for (StackTraceElement e : t.getValue())
-                        buf.append(e).append('\n');
-                    r.put(t.getKey().getName(),buf.toString());
-                }
-            }
             return r;
         }
         private static final long serialVersionUID = 1L;

core/src/main/java/jenkins/PluginSubtypeMarker.java

@@ -24,7 +24,6 @@
 package jenkins;
 
 import hudson.Plugin;
-import org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement;
 import org.kohsuke.MetaInfServices;
 
 import javax.annotation.processing.AbstractProcessor;
@@ -58,7 +57,6 @@ import java.util.Set;
 @SupportedSourceVersion(SourceVersion.RELEASE_6)
 @SupportedAnnotationTypes("*")
 @MetaInfServices(Processor.class)
-@IgnoreJRERequirement
 @SuppressWarnings({"Since15"})
 public class PluginSubtypeMarker extends AbstractProcessor {
     @Override