Fixing findbugs warnings after plugin pom upgrade

Jenkinsfile

@@ -1 +1 @@
-buildPlugin(findbugs: [run: true, archive:true])
+buildPlugin(findbugs: [run: true, archive:true, unstableTotalAll: "0"])

pom.xml

@@ -139,6 +139,34 @@
         </dependency>
     </dependencies>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>findbugs-maven-plugin</artifactId>
+                <version>3.0.5</version>
+                <configuration>
+                    <!-- The excludeFilterFile profile in plugin-pom doesn't seem to take effect. So redundant configuration to fix.-->
+                    <excludeFilterFile>src/findbugs/excludesFilter.xml</excludeFilterFile>
+                    <failOnError>${findbugs.failOnError}</failOnError>
+                    <xmlOutput>true</xmlOutput>
+                    <findbugsXmlOutput>false</findbugsXmlOutput>
+                    <effort>${findbugs.effort}</effort>
+                    <threshold>${findbugs.threshold}</threshold>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>findbugs</id>
+                        <goals>
+                            <goal>check</goal>
+                        </goals>
+                        <phase>verify</phase>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
     <scm>
         <connection>scm:git:git://github.com/jenkinsci/pipeline-utility-steps-plugin.git</connection>
         <developerConnection>scm:git:git@github.com:jenkinsci/pipeline-utility-steps-plugin.git</developerConnection>

src/findbugs/excludesFilter.xml

@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <FindBugsFilter>
     <Match>
-        <Package name="org.jenkinsci.plugins.pipeline.utility.steps.shaded"/>
+        <Package name="~org\.jenkinsci\.plugins\.pipeline\.utility\.steps\.shaded.*"/>
+    </Match>
+    <Match>
+        <Class name="~.*\.Messages"/>
     </Match>
 </FindBugsFilter>

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/conf/ReadPropertiesStepExecution.java

@@ -48,6 +48,7 @@
  * @author Robert Sandell <rsandell@cloudbees.com>.
  */
 public class ReadPropertiesStepExecution extends AbstractFileOrTextStepExecution<Map<String, Object>> {
+    private static final long serialVersionUID = 1L;
 
     private transient ReadPropertiesStep step;
 

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/conf/WriteYamlStep.java

@@ -28,15 +28,17 @@
 import hudson.Extension;
 import hudson.FilePath;
 import hudson.model.TaskListener;
+import org.apache.commons.lang.StringUtils;
 import org.jenkinsci.plugins.pipeline.utility.steps.shaded.org.yaml.snakeyaml.DumperOptions;
 import org.jenkinsci.plugins.pipeline.utility.steps.shaded.org.yaml.snakeyaml.Yaml;
 import org.jenkinsci.plugins.workflow.steps.*;
 import org.kohsuke.stapler.DataBoundConstructor;
+import org.kohsuke.stapler.DataBoundSetter;
 
 import javax.annotation.Nonnull;
-import javax.inject.Inject;
 import java.io.*;
 import java.net.URL;
+import java.nio.charset.Charset;
 import java.nio.file.FileAlreadyExistsException;
 import java.util.*;
 
@@ -51,6 +53,7 @@ public class WriteYamlStep extends Step {
 
     private String file;
     private Object data;
+    private String charset;
 
     @DataBoundConstructor
     public WriteYamlStep(@Nonnull String file, @Nonnull Object data) {
@@ -84,6 +87,21 @@ public Object getData() {
         return data;
     }
 
+    public String getCharset() {
+        return charset;
+    }
+
+    /**
+     * The charset encoding to use when writing the file. Defaults to UTF-8.
+     * @param charset the charset
+     * @see Charset
+     * @see Charset#forName(String)
+     */
+    @DataBoundSetter
+    public void setCharset(String charset) {
+        this.charset = charset;
+    }
+
     private boolean isValidObjectType(Object obj) {
         if ((obj instanceof Boolean) || (obj instanceof Character) ||
             (obj instanceof Number) || (obj instanceof String) ||
@@ -139,6 +157,7 @@ public String getDisplayName() {
     }
 
     public static class Execution extends SynchronousNonBlockingStepExecution<Void> {
+        private static final long serialVersionUID = 1L;
 
         private transient WriteYamlStep step;
 
@@ -163,7 +182,15 @@ protected Void run () throws Exception {
             options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
             Yaml yaml = new Yaml(options);
 
-            try (OutputStreamWriter writer = new OutputStreamWriter(path.write())) {
+            Charset cs;
+
+            if (StringUtils.isEmpty(step.getCharset())) {
+                cs = Charset.forName("UTF-8"); //If it doesn't exist then something is broken in the jvm
+            } else {
+                cs = Charset.forName(step.getCharset()); //Will throw stuff directly to the user
+            }
+
+            try (OutputStreamWriter writer = new OutputStreamWriter(path.write(), cs)) {
                 yaml.dump (step.getData(), writer);
             }
 

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/conf/mf/ReadManifestStepExecution.java

@@ -24,6 +24,7 @@
 
 package org.jenkinsci.plugins.pipeline.utility.steps.conf.mf;
 
+import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import hudson.FilePath;
 import hudson.model.TaskListener;
 import org.jenkinsci.plugins.pipeline.utility.steps.AbstractFileOrTextStep;
@@ -50,6 +51,7 @@
  * @author Robert Sandell <rsandell@cloudbees.com>.
  */
 public class ReadManifestStepExecution extends AbstractFileOrTextStepExecution<SimpleManifest> {
+    private static final long serialVersionUID = 1L;
 
     private transient ReadManifestStep step;
 
@@ -75,6 +77,7 @@ private SimpleManifest parseText(String text) throws IOException {
         return new SimpleManifest(manifest);
     }
 
+    @SuppressFBWarnings(value = "RCN_REDUNDANT_NULLCHECK_OF_NULL_VALUE", justification = "I don't understand what/where it is.")
     private SimpleManifest parseFile(String file) throws IOException, InterruptedException {
         TaskListener listener = getContext().get(TaskListener.class);
         FilePath path = ws.child(file);

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/fs/FileSha1Step.java

@@ -120,7 +120,7 @@ protected String run() throws Exception {
             return filePath.act(new ComputeSha1());
         }
 
-        private class ComputeSha1 extends MasterToSlaveFileCallable<String> {
+        private static class ComputeSha1 extends MasterToSlaveFileCallable<String> {
             @Override
             public String invoke(File file, VirtualChannel virtualChannel) throws IOException, InterruptedException {
                 if (file.exists() && file.isFile()) {

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/fs/FindFilesStepExecution.java

@@ -42,6 +42,7 @@
  * @author Robert Sandell <rsandell@cloudbees.com>.
  */
 public class FindFilesStepExecution extends SynchronousNonBlockingStepExecution<FileWrapper[]> {
+    private static final long serialVersionUID = 1L;
 
     @Inject
     private transient FindFilesStep step;

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/fs/TeeStep.java

@@ -108,7 +108,9 @@ public OutputStream decorateLogger(Run build, final OutputStream logger) throws
     private static OutputStream append(FilePath fp) throws IOException, InterruptedException {
         if (fp.getChannel() == null) {
             File f = new File(fp.getRemote()).getAbsoluteFile();
-            f.getParentFile().mkdirs();
+            if (!f.getParentFile().exists() && !f.getParentFile().mkdirs()) {
+                throw new IOException("Failed to create directory " + f.getParentFile());
+            }
             try {
                 return Files.newOutputStream(f.toPath(), StandardOpenOption.CREATE, StandardOpenOption.APPEND/*, StandardOpenOption.DSYNC*/);
             } catch (InvalidPathException e) {
@@ -120,7 +122,9 @@ private static OutputStream append(FilePath fp) throws IOException, InterruptedE
                 @Override
                 public OutputStream invoke(File f, VirtualChannel channel) throws IOException, InterruptedException {
                     f = f.getAbsoluteFile();
-                    f.getParentFile().mkdirs();
+                    if (!f.getParentFile().exists() && !f.getParentFile().mkdirs()) {
+                        throw new IOException("Failed to create directory " + f.getParentFile());
+                    }
                     try {
                         return new RemoteOutputStream(Files.newOutputStream(f.toPath(), StandardOpenOption.CREATE, StandardOpenOption.APPEND/*, StandardOpenOption.DSYNC*/));
                     } catch (InvalidPathException e) {

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/fs/TouchStep.java

@@ -134,6 +134,7 @@ public FormValidation doCheckFile(@QueryParameter String value) {
      * The execution of {@link TouchStep}.
      */
     public static class ExecutionImpl extends SynchronousNonBlockingStepExecution<FileWrapper> {
+        private static final long serialVersionUID = 1L;
 
         private transient TouchStep step;
 

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/jenkins/NodesByLabelStep.java

@@ -111,8 +111,8 @@ public Set<? extends Class<?>> getRequiredContext() {
     public static class Execution extends SynchronousStepExecution<List<String>> {
 
         private static final long serialVersionUID = 1L;
-        private transient final String label;
-        private transient final boolean includeOffline;
+        private final String label;
+        private final boolean includeOffline;
 
         Execution(String label, boolean includeOffline, StepContext context) {
             super(context);

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/json/ReadJSONStepExecution.java

@@ -46,6 +46,7 @@
  * @author Nikolas Falco
  */
 public class ReadJSONStepExecution extends AbstractFileOrTextStepExecution<JSON> {
+    private static final long serialVersionUID = 1L;
 
     private transient ReadJSONStep step;
 

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/json/WriteJSONStepExecution.java

@@ -47,6 +47,7 @@
  * @author Nikolas Falco
  */
 public class WriteJSONStepExecution extends SynchronousNonBlockingStepExecution<Void> {
+    private static final long serialVersionUID = 1L;
 
     private transient WriteJSONStep step;
 
@@ -71,7 +72,7 @@ protected Void run() throws Exception {
             throw new FileNotFoundException(Messages.JSONStepExecution_fileIsDirectory(path.getRemote()));
         }
 
-        try (OutputStreamWriter writer = new OutputStreamWriter(path.write())) {
+        try (OutputStreamWriter writer = new OutputStreamWriter(path.write(), "UTF-8")) {
             if (step.getPretty() > 0) {
                 writer.write(step.getJson().toString(step.getPretty()));
             } else {

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/maven/ReadMavenPomStep.java

@@ -122,6 +122,7 @@ public String getDisplayName() {
     }
 
     public static class Execution extends SynchronousNonBlockingStepExecution<Model> {
+        private static final long serialVersionUID = 1L;
 
         private transient ReadMavenPomStep step;
 

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/maven/WriteMavenPomStep.java

@@ -119,6 +119,7 @@ public String getDisplayName() {
     }
 
     public static class Execution extends SynchronousNonBlockingStepExecution<Void> {
+        private static final long serialVersionUID = 1L;
 
         private transient WriteMavenPomStep step;
 

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/zip/UnZipStepExecution.java

@@ -59,6 +59,7 @@
  * @author Robert Sandell <rsandell@cloudbees.com>.
  */
 public class UnZipStepExecution extends SynchronousNonBlockingStepExecution<Object> {
+    private static final long serialVersionUID = 1L;
 
     private transient UnZipStep step;
 

src/main/java/org/jenkinsci/plugins/pipeline/utility/steps/zip/ZipStepExecution.java

@@ -56,6 +56,7 @@
  * @author Robert Sandell <rsandell@cloudbees.com>.
  */
 public class ZipStepExecution extends SynchronousNonBlockingStepExecution<Void> {
+    private static final long serialVersionUID = 1L;
 
     private transient ZipStep step;
 

src/main/resources/org/jenkinsci/plugins/pipeline/utility/steps/conf/WriteYamlStep/config.jelly

@@ -28,7 +28,10 @@
 		<f:textbox />
 	</f:entry>
 
-	<f:entry title="${%text.title}" field="text" description="${%text.description}">
+	<f:entry title="${%text.title}" field="data" description="${%text.description}">
+		<f:textbox />
+	</f:entry>
+	<f:entry title="${%charset.title}" field="charset" description="${%charset.description}">
 		<f:textbox />
 	</f:entry>
 </j:jelly>

src/main/resources/org/jenkinsci/plugins/pipeline/utility/steps/conf/WriteYamlStep/config.properties

@@ -1,4 +1,6 @@
 file.title=File
 file.description=File to save as YAML
 text.title=Data
-text.description=Object to serialize to YAML. Must be Boolean, Character, Number, String, URL, Calendar, Date, UUID, null or a Collection/Map of them.
+text.description=Object to serialize to YAML. Must be Boolean, Character, Number, String, URL, Calendar, Date, UUID, null or a Collection/Map of them.
+charset.title=Charset
+charset.description=(Optional) What charset to use when writing the file. Default: UTF-8

src/main/resources/org/jenkinsci/plugins/pipeline/utility/steps/conf/WriteYamlStep/help.html

@@ -36,6 +36,20 @@
         <code>data</code>:
         A Mandatory Object containing the data to be serialized.
     </li>
+    <li>
+        <code>charset</code>:
+        Optionally specify the charset to use when writing the file. Defaults to UTF-8 if nothing else is specified.
+        What charsets that are available depends on your Jenkins master system.
+        The java specification tells us though that at least the following should be available:
+        <ul>
+            <li>US-ASCII</li>
+            <li>ISO-8859-1</li>
+            <li>UTF-8</li>
+            <li>UTF-16BE</li>
+            <li>UTF-16LE</li>
+            <li>UTF-16</li>
+        </ul>
+    </li>
 </ul>
 <p>
     <strong>Examples:</strong><br/>