Added SQ parsers

pom.xml

@@ -156,6 +156,14 @@
       <artifactId>jaxen</artifactId>
       <version>1.1.6</version>
     </dependency>
+
+    <!-- SonarQube Parser Dependencies -->
+
+    <dependency>
+      <groupId>org.json</groupId>
+      <artifactId>json</artifactId>
+      <version>20180130</version>
+    </dependency>
 
     <!-- Test Dependencies -->
     <dependency>

src/main/java/edu/hm/hafner/analysis/parser/SonarQubeDiffParser.java

@@ -0,0 +1,40 @@
+package edu.hm.hafner.analysis.parser;
+
+import org.json.JSONObject;
+
+/**
+ * Class which parses SonarQube reports taken from Sonarqube differential scan report (preview).
+ *
+ * @author Carles Capdevila
+ */
+public class SonarQubeDiffParser extends SonarQubeParser {
+    private static final long serialVersionUID = -47634856667313368L;
+
+    private static final String ISSUE_IS_NEW = "isNew";
+    private static final String COMPONENT_MODULE_KEY = "moduleKey";
+
+    /** {@inheritDoc} */
+    @Override
+    public boolean issueFilter(final JSONObject issue) {
+        return issue.optBoolean(ISSUE_IS_NEW, false);
+    }
+
+    @Override
+    public String parseFilename(final JSONObject issue) {
+        //Get component
+        String componentKey = issue.optString(ISSUE_COMPONENT, null);
+        JSONObject component = findComponentByKey(componentKey);
+
+        if (component != null) {
+            //Get file path inside module
+            String filePath = component.optString(COMPONENT_PATH);
+
+            //Get module file path
+            String modulePath = parseModulePath(component, COMPONENT_MODULE_KEY);
+            return modulePath + filePath;
+        } else {
+            return super.parseFilename(issue);
+        }
+    }
+
+}

src/main/java/edu/hm/hafner/analysis/parser/SonarQubeIssuesParser.java

@@ -0,0 +1,33 @@
+package edu.hm.hafner.analysis.parser;
+
+import org.json.JSONObject;
+
+/**
+ * Class which parses SonarQube reports taken from the Sonarqube API (api/issues/search).
+ *
+ * @author Carles Capdevila
+ */
+public class SonarQubeIssuesParser extends SonarQubeParser {
+    private static final long serialVersionUID = -8213765181968340929L;
+
+    private static final String ISSUE_SUB_PROJECT= "subProject";
+
+    @Override
+    public String parseFilename(final JSONObject issue) {
+        //Get component
+        String componentKey = issue.optString(ISSUE_COMPONENT, null);
+        JSONObject component = findComponentByKey(componentKey);
+
+        if (component != null) {
+            //Get file path inside module
+            String filePath = component.optString(COMPONENT_PATH);
+
+            //Get module file path
+            String modulePath = parseModulePath(issue, ISSUE_SUB_PROJECT);
+            return modulePath + filePath;
+        } else {
+            return super.parseFilename(issue);
+        }
+    }
+
+}

src/main/java/edu/hm/hafner/analysis/parser/SonarQubeParser.java

@@ -0,0 +1,270 @@
+package edu.hm.hafner.analysis.parser;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.function.Function;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.json.JSONTokener;
+
+import edu.hm.hafner.analysis.AbstractParser;
+import edu.hm.hafner.analysis.Issue;
+import edu.hm.hafner.analysis.IssueBuilder;
+import edu.hm.hafner.analysis.ParsingCanceledException;
+import edu.hm.hafner.analysis.ParsingException;
+import edu.hm.hafner.analysis.Priority;
+import edu.hm.hafner.analysis.Report;
+
+/**
+ * Base class for SonarQube parsers.
+ *
+ * @author Carles Capdevila
+ */
+public abstract class SonarQubeParser extends AbstractParser {
+    private static final long serialVersionUID = 1958805067002376816L;
+
+    //Arrays
+    /** The components array. */
+    protected static final String COMPONENTS = "components";
+    /** The issues array. */
+    protected static final String ISSUES = "issues";
+
+    //Issues attributes
+    /** issue.component attribute. */
+    protected static final String ISSUE_COMPONENT = "component";
+    /** issue.message attribute.  */
+    protected static final String ISSUE_MESSAGE = "message";
+    /** issue.line attribute. */
+    protected static final String ISSUE_LINE = "line";
+    /** issue.line attribute. */
+    protected static final String ISSUE_SEVERITY = "severity";
+    /** issue.type attribute. */
+    protected static final String ISSUE_TYPE  = "type";
+
+    //Component attributes
+    /** component.key attribute. */
+    protected static final String COMPONENT_KEY = "key";
+    /** component.path attribute. */
+    protected static final String COMPONENT_PATH = "path";
+
+    // Severity values
+    /** severity value: BLOCKER */
+    protected static final String SEVERITY_BLOCKER = "BLOCKER";
+    /** severity value: CRITICAL */
+    protected static final String SEVERITY_CRITICAL = "CRITICAL";
+    // Severity MAJOR is omitted as it corresponds with default Priority: NORMAL
+    /** severity value: MINOR */
+    protected static final String SEVERITY_MINOR = "MINOR";
+    /** severity value: INFO */
+    protected static final String SEVERITY_INFO = "INFO";
+    /** Fixed category: SonarQube */
+    protected static final String CATEGORY_SONARQUBE = "SonarQube";
+
+    /** The issues array. */
+    protected JSONArray issues;
+    /** The components array. */
+    protected JSONArray components;
+
+    @Override
+    public Report parse(Reader reader, Function<String, String> preProcessor)
+    		throws ParsingCanceledException, ParsingException {
+    	Report warnings = new Report();
+
+        JSONObject jsonReport = (JSONObject)new JSONTokener(reader).nextValue();
+
+        //Get the components part to get the file paths on each issue (the component objects contain the most concise path)
+        components = new JSONArray();
+        if (jsonReport.has(COMPONENTS)) {
+            components = jsonReport.optJSONArray(COMPONENTS);
+        }
+
+        issues = new JSONArray();
+        if (jsonReport.has(ISSUES)) {
+            issues = jsonReport.optJSONArray(ISSUES);
+        }
+
+        //Iterate the issues
+        for (Object issue : issues) {
+            if (issue instanceof JSONObject) {
+                //Filter the issues
+                if (issueFilter((JSONObject)issue)) {
+                    //Parse each issue
+                    warnings.add(parseIssue((JSONObject)issue));
+                }
+            }
+        }
+
+        return warnings;
+    }
+
+
+    /**
+     * Decides whether or not to parse and add an issue.
+     * @param issue the issue to filter.
+     * @return true if the issue is to be parsed and added, otherwise false.
+     */
+    public boolean issueFilter(final JSONObject issue) {
+        return true;//Parse all issues by default
+    }
+
+    /**
+     * The core of the parsing; this can be further overridden to determine how each issue is parsed and shown.
+     * @param issue the issue to parse.
+     * @return a FileAnnotation with the data of the issue to show.
+     */
+    public Issue parseIssue(final JSONObject issue) {
+
+    	IssueBuilder issueBuilder = new IssueBuilder();
+
+        //file
+        String filename = parseFilename(issue);
+
+        //line
+        int start = parseStart(issue);
+
+        //type
+        String type = parseType(issue);
+
+        //category
+        String category = parseCategory(issue);
+
+        //message
+        String message = parseMessage(issue);
+
+        //priority
+        Priority priority = parsePriority(issue);
+
+        return new IssueBuilder()
+        			.setFileName(filename) 
+        			.setLineStart(start)
+        			.setType(type)
+        			.setCategory(category)
+        			.setMessage(message)
+        			.setPriority(priority)
+        			.build();
+    }
+
+    /**
+     * Parse function for filename.
+     * @param issue the object to parse.
+     * @return the filename.
+     */
+    public String parseFilename(final JSONObject issue) {
+        String componentKey = issue.optString(ISSUE_COMPONENT);
+        return componentKey.substring(componentKey.lastIndexOf(':'));
+    }
+
+    /**
+     * Default parse for start. Override to change the default parsing.
+     * @param issue the object to parse.
+     * @return the start.
+     */
+    public int parseStart(final JSONObject issue) {
+        return issue.optInt(ISSUE_LINE, -1);
+    }
+
+    /**
+     * Default parse for type. Override to change the default parsing.
+     * @param issue the object to parse.
+     * @return the type.
+     */
+    public String parseType(final JSONObject issue) {
+        return issue.optString(ISSUE_TYPE, "");
+    }
+
+    /**
+     * Default parse for category. Override to change the default parsing.
+     * @param issue the object to parse.
+     * @return the filename.
+     */
+    public String parseCategory(final JSONObject issue) {
+        return CATEGORY_SONARQUBE;
+    }
+
+    /**
+     * Default parse for message. Override to change the default parsing.
+     * @param issue the object to parse.
+     * @return the message.
+     */
+    public String parseMessage(final JSONObject issue) {
+        return issue.optString(ISSUE_MESSAGE, "No message.");
+    }
+
+    /**
+     * Default parse for priority. Override to change the default parsing.
+     * @param issue the object to parse.
+     * @return the priority.
+     */
+    public Priority parsePriority(final JSONObject issue) {
+        String severity = issue.optString(ISSUE_SEVERITY, null);
+        return severityToPriority(severity);
+    }
+
+    //UTILITIES
+    /**
+     * Find the module path inside the corresponding component.
+     * @param moduleKeyObject the object which contains the component key.
+     * @param componentKey the component key.
+     * @return the module path.
+     */
+    protected String parseModulePath(final JSONObject moduleKeyObject, final String componentKey) {
+        String modulePath = "";
+        if (moduleKeyObject.has(componentKey)) {
+            String moduleKey = moduleKeyObject.getString(componentKey);
+            JSONObject moduleComponent = findComponentByKey(moduleKey);
+            if (moduleComponent != null && moduleComponent.has(COMPONENT_PATH)) {
+                modulePath = moduleComponent.getString(COMPONENT_PATH) + "/";
+            }
+        }
+        return modulePath;
+    }
+
+    /**
+     * Find the component in the components array which contains this key.
+     * @param key the key of the desired component.
+     * @return the desired JSONObject component, or null if it hasn't been found.
+     */
+    protected JSONObject findComponentByKey (final String key) {
+        if (components != null && key != null) {
+            for (Object component : components) {
+                if (component instanceof JSONObject) {
+                    JSONObject jsonComponent = (JSONObject)component;
+                    if (key.equals(jsonComponent.optString(COMPONENT_KEY))) {
+                        return (JSONObject)component;
+                    }
+                }
+            }
+        }
+
+        return null;
+    }
+
+
+    /**
+     * Maps issue severity to warning priority:<br>
+     * <strong>HIGH:</strong> BLOCKER, CRITICAL<br>
+     * <strong>NORMAL:</strong> MAJOR<br>
+     * <strong>LOW:</strong> MINOR, INFO
+     *
+     * @param severity a String containing the SonarQube issue severity.
+     * @return a priority object corresponding to the passed severity.
+     */
+    protected Priority severityToPriority (final String severity) {
+        Priority priority = Priority.NORMAL;
+        // Severity MAJOR is omitted as it corresponds with default Priority: NORMAL
+        if (severity != null) {
+            if (SEVERITY_BLOCKER.equals(severity) || SEVERITY_CRITICAL.equals(severity)) {
+                priority = Priority.HIGH;
+            } else if (SEVERITY_MINOR.equals(severity) || SEVERITY_INFO.equals(severity)) {
+                priority = Priority.LOW;
+            }
+        }
+        return priority;
+    }
+
+}
+