Replace checkstyle with PMD

Signed-off-by: Mark S. Lewis <Mark.S.Lewis@outlook.com>

Author: bestbeforetoday

fabric-chaincode-integration-test/src/test/java/org/hyperleder/fabric/shim/integration/contractinstall/ContractInstallTest.java

@@ -22,7 +22,7 @@ public static void setUp() throws Exception {
     }
 
     @Test
-    public void TestInstall() {
+    public void testInstall() {
 
         InvokeHelper helper = InvokeHelper.newHelper("baregradlecc", "sachannel");
         String text = helper.invoke("org1", "whoami");

fabric-chaincode-integration-test/src/test/java/org/hyperleder/fabric/shim/integration/ledgertests/LedgerIntegrationTest.java

@@ -23,7 +23,7 @@ public static void setUp() throws Exception {
     }
 
     @Test
-    public void TestLedgers() {
+    public void testLedgers() {
         InvokeHelper helper = InvokeHelper.newHelper("ledgercc", "sachannel");
 
         String text = helper.invoke("org1", "accessLedgers");

fabric-chaincode-integration-test/src/test/java/org/hyperleder/fabric/shim/integration/shimtests/SACCIntegrationTest.java

@@ -22,7 +22,7 @@ public static void setUp() throws Exception {
     }
 
     @Test
-    public void TestLedger() {
+    public void testLedger() {
 
         InvokeHelper helper = InvokeHelper.newHelper("shimcc", "sachannel");
         String text = helper.invoke("org1", "putBulkStates");

fabric-chaincode-integration-test/src/test/java/org/hyperleder/fabric/shim/integration/shimtests/SBECCIntegrationTest.java

@@ -22,7 +22,7 @@ public static void setUp() throws Exception {
     }
 
     @Test
-    public void RunSBE_pub_setget() {
+    public void runSBE_pub_setget() {
         final String mode = "pub";
 
         final InvokeHelper helper = InvokeHelper.newHelper("shimcc", "sachannel");
@@ -85,7 +85,7 @@ public void RunSBE_pub_setget() {
     }
 
     @Test
-    public void RunSBE_priv() {
+    public void runSBE_priv() {
         final String mode = "priv";
 
         final InvokeHelper helper = InvokeHelper.newHelper("shimcc", "sachannel");

fabric-chaincode-integration-test/src/test/java/org/hyperleder/fabric/shim/integration/util/FabricState.java

@@ -9,19 +9,13 @@
 import java.nio.file.Paths;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.concurrent.Semaphore;
 import org.hyperleder.fabric.shim.integration.util.Bash.BashBuilder;
 
 public final class FabricState {
 
     private static FabricState state;
 
-    private static final Map<String, Boolean> channelStarted = new HashMap<>();
-
-    // sempaphore to protect access
-    private static final Semaphore flag = new Semaphore(1);
-
-    public static FabricState getState() {
+    public static synchronized FabricState getState() {
         if (state == null) {
             state = new FabricState();
         }

fabric-chaincode-shim/build.gradle

@@ -8,20 +8,14 @@ plugins {
     id 'maven-publish'
     id 'jacoco'
     id 'signing'
-    id 'checkstyle'
+    id 'pmd'
 }
 
-checkstyle {
-    toolVersion '10.18.1'
-    configFile file("../ci/checkstyle/checkstyle.xml")
-    configProperties = [root_dir: file("..") ]
-}
-checkstyleMain {
-    source ='src/main/java'
-}
-checkstyleMain.exclude("**/ChaincodeServerProperties.**")
-checkstyleTest {
-    source ='src/test/java'
+pmd {
+    toolVersion = '7.7.0'
+    ruleSetFiles = files('../pmd-ruleset.xml')
+    ruleSets = [] // explicitly set to empty to avoid using the default configuration
+    ignoreFailures = false
 }
 
 configurations {

fabric-chaincode-shim/src/main/java/org/hyperledger/fabric/Logger.java

@@ -18,7 +18,7 @@ protected Logger(final String name) {
         super(name, null);
 
         // ensure that the parent logger is set
-        this.setParent(java.util.logging.Logger.getLogger("org.hyperledger.fabric"));
+        super.setParent(java.util.logging.Logger.getLogger("org.hyperledger.fabric"));
     }
 
     /**
@@ -45,9 +45,9 @@ public void debug(final String msg) {
      */
     public static Logger getLogger(final Class<?> class1) {
         // important to add the logger to the log manager
-        final Logger l = Logger.getLogger(class1.getName());
-        LogManager.getLogManager().addLogger(l);
-        return l;
+        final Logger result = Logger.getLogger(class1.getName());
+        LogManager.getLogManager().addLogger(result);
+        return result;
     }
 
     /** @param message */

fabric-chaincode-shim/src/main/java/org/hyperledger/fabric/Logging.java

@@ -7,8 +7,9 @@
 
 import java.io.PrintWriter;
 import java.io.StringWriter;
-import java.util.ArrayList;
 import java.util.Collections;
+import java.util.List;
+import java.util.Locale;
 import java.util.logging.Level;
 import java.util.logging.LogManager;
 
@@ -50,7 +51,7 @@ public static String formatError(final Throwable throwable) {
         final Throwable cause = throwable.getCause();
         if (cause != null) {
             buffer.append(".. caused by ..").append(System.lineSeparator());
-            buffer.append(Logging.formatError(cause));
+            buffer.append(formatError(cause));
         }
 
         return buffer.toString();
@@ -67,11 +68,11 @@ public static void setLogLevel(final String newLevel) {
         final LogManager logManager = LogManager.getLogManager();
         // slightly cumbersome approach - but the loggers don't have a 'get children'
         // so find those that have the correct stem.
-        final ArrayList<String> allLoggers = Collections.list(logManager.getLoggerNames());
+        final List<String> allLoggers = Collections.list(logManager.getLoggerNames());
         allLoggers.add("org.hyperledger");
         allLoggers.stream()
                 .filter(name -> name.startsWith("org.hyperledger"))
-                .map(name -> logManager.getLogger(name))
+                .map(logManager::getLogger)
                 .forEach(logger -> {
                     if (logger != null) {
                         logger.setLevel(l);
@@ -81,7 +82,7 @@ public static void setLogLevel(final String newLevel) {
 
     private static Level mapLevel(final String level) {
         if (level != null) {
-            switch (level.toUpperCase().trim()) {
+            switch (level.toUpperCase(Locale.getDefault()).trim()) {
                 case "ERROR":
                 case "CRITICAL":
                     return Level.SEVERE;

fabric-chaincode-shim/src/main/java/org/hyperledger/fabric/contract/ClientIdentity.java

@@ -30,11 +30,11 @@
  * and attributes. Such information is useful in enforcing access control by the chaincode.
  */
 public final class ClientIdentity {
-    private static Logger logger = Logger.getLogger(ContractRouter.class.getName());
+    private static final Logger LOGGER = Logger.getLogger(ContractRouter.class.getName());
 
     private final String mspId;
     private final X509Certificate cert;
-    private Map<String, String> attrs;
+    private final Map<String, String> attrs;
     private final String id;
     // special OID used by Fabric to save attributes in x.509 certificates
     private static final String FABRIC_CERT_ATTR_OID = "1.2.3.4.5.6.7.8.1";
@@ -47,7 +47,7 @@ public final class ClientIdentity {
      * @throws JSONException
      * @throws IOException
      */
-    public ClientIdentity(final ChaincodeStub stub) throws CertificateException, JSONException, IOException {
+    public ClientIdentity(final ChaincodeStub stub) throws CertificateException, IOException {
         final byte[] signingId = stub.getCreator();
 
         // Create a Serialized Identity protobuf
@@ -60,11 +60,12 @@ public ClientIdentity(final ChaincodeStub stub) throws CertificateException, JSO
                 CertificateFactory.getInstance("X509").generateCertificate(new ByteArrayInputStream(idBytes));
         this.cert = cert;
 
-        this.attrs = new HashMap<String, String>();
         // Get the extension where the identity attributes are stored
         final byte[] extensionValue = cert.getExtensionValue(FABRIC_CERT_ATTR_OID);
         if (extensionValue != null) {
             this.attrs = parseAttributes(extensionValue);
+        } else {
+            this.attrs = new HashMap<>();
         }
 
         // Populate identity
@@ -100,7 +101,7 @@ public String getMSPID() {
      */
     private Map<String, String> parseAttributes(final byte[] extensionValue) throws IOException {
 
-        final Map<String, String> attrMap = new HashMap<String, String>();
+        final Map<String, String> attrMap = new HashMap<>();
 
         // Create ASN1InputStream from extensionValue
         try (ByteArrayInputStream inStream = new ByteArrayInputStream(extensionValue);
@@ -126,7 +127,7 @@ private Map<String, String> parseAttributes(final byte[] extensionValue) throws
         } catch (final JSONException error) {
             // creating a JSON object failed
             // decoded extensionValue is not a string containing JSON
-            logger.error(() -> logger.formatError(error));
+            LOGGER.error(() -> LOGGER.formatError(error));
             // return empty map
         }
         return attrMap;
@@ -142,11 +143,7 @@ private Map<String, String> parseAttributes(final byte[] extensionValue) throws
      * @return {String | null} Value of the attribute or null if the invoking identity does not possess the attribute.
      */
     public String getAttributeValue(final String attrName) {
-        if (this.attrs.containsKey(attrName)) {
-            return this.attrs.get(attrName);
-        } else {
-            return null;
-        }
+        return this.attrs.getOrDefault(attrName, null);
     }
 
     /**
@@ -160,11 +157,7 @@ public String getAttributeValue(final String attrName) {
      *     expected value. Otherwise, returns false.
      */
     public boolean assertAttributeValue(final String attrName, final String attrValue) {
-        if (!this.attrs.containsKey(attrName)) {
-            return false;
-        } else {
-            return attrValue.equals(this.attrs.get(attrName));
-        }
+        return this.attrs.containsKey(attrName) && attrValue.equals(this.attrs.get(attrName));
     }
 
     /**

fabric-chaincode-shim/src/main/java/org/hyperledger/fabric/contract/ContextFactory.java

@@ -10,22 +10,18 @@
 
 /** Factory to create {@link Context} from {@link ChaincodeStub} by wrapping stub with dynamic proxy. */
 public final class ContextFactory {
-    private static ContextFactory cf;
+    private static final ContextFactory INSTANCE = new ContextFactory();
 
     /** @return ContextFactory */
-    public static synchronized ContextFactory getInstance() {
-        if (cf == null) {
-            cf = new ContextFactory();
-        }
-        return cf;
+    public static ContextFactory getInstance() {
+        return INSTANCE;
     }
 
     /**
      * @param stub
      * @return Context
      */
     public Context createContext(final ChaincodeStub stub) {
-        final Context newContext = new Context(stub);
-        return newContext;
+        return new Context(stub);
     }
 }