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org.kantega.reststop.development.ErrorReporter Maven / Gradle / Ivy
/*
* Copyright 2015 Kantega AS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.kantega.reststop.development;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;
import org.junit.runner.notification.Failure;
import org.kantega.reststop.classloaderutils.PluginClassLoader;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.tools.Diagnostic;
import javax.tools.JavaFileObject;
import java.io.*;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.util.*;
/**
*
*/
public class ErrorReporter {
private final VelocityEngine velocityEngine;
private final File basedir;
private List compilationExceptions = new ArrayList<>();
private List testFailureExceptions = new ArrayList<>();
private Exception pluginLoadingException;
private PluginClassLoader pluginClassLoader;
public ErrorReporter(VelocityEngine velocityEngine, File basedir) {
this.velocityEngine = velocityEngine;
this.basedir = basedir;
}
public ErrorReporter addCompilationException(JavaCompilationException e) {
compilationExceptions.add(e);
return this;
}
public void render(HttpServletRequest req, HttpServletResponse resp) throws IOException {
resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
resp.setContentType("text/html");
VelocityContext map = new VelocityContext();
map.put("contextPath", req.getContextPath());
map.put("compilationExceptions", formatCompilationExceptions());
map.put("testFailureExceptions", formatTestFailureExceptions());
map.put("pluginLoadingExceptions", formatPluginLoadingExceptions());
velocityEngine.getTemplate("templates/template.vm").merge(map, resp.getWriter());
resp.getWriter().flush();
}
private String formatPluginLoadingExceptions() {
StringBuilder sb = new StringBuilder();
sb.append("[");
if(pluginLoadingException != null) {
sb.append("{");
StringWriter sw = new StringWriter();
pluginLoadingException.printStackTrace(new PrintWriter(sw));
sb.append("stacktrace:\"").append(escapeJavascript(sw.toString())).append("\",");
sb.append("plugin:\"").append(escapeJavascript(pluginClassLoader.getPluginInfo().getPluginId())).append("\"");
sb.append("}");
}
sb.append("]");
return sb.toString();
}
private String formatTestFailureExceptions() {
StringBuilder sb = new StringBuilder();
sb.append("[");
for (TestFailureException e : testFailureExceptions) {
if(sb.length() != 1) {
sb.append(",\n");
}
for(int f = 0; f < e.getFailures().size(); f++) {
Failure failure = e.getFailures().get(f);
if(f > 0) {
sb.append(",\n");
}
sb.append("[");
{
sb.append("{");
{
sb.append("description:").append("\"").append(escapeJavascript(failure.getDescription().toString())).append("\",");
sb.append("exceptionClass:").append("\"").append(escapeJavascript(failure.getException().getClass().getName())).append("\",");
for (StackTraceElement element : failure.getException().getStackTrace()) {
if(element.getClassName().equals(failure.getDescription().getTestClass().getName())) {
sb.append("sourceFile:").append("\"").append(escapeJavascript(element.getFileName())).append("\",");
sb.append("sourceMethod:").append("\"").append(escapeJavascript(element.getMethodName())).append("\",");
sb.append("sourceLine:").append(Integer.toString(element.getLineNumber())).append(",");
}
}
File sourceFile = new File(new File(basedir, "src/test/java"), failure.getDescription().getTestClass().getName().replace('.','/') +".java");
sb.append("sourceLines:").append(readSourceLines(sourceFile)).append("\n,");
if(failure.getException() != null) {
StringWriter sw = new StringWriter();
failure.getException().printStackTrace(new PrintWriter(sw));
sb.append("stackTrace:").append("\"").append(escapeJavascript(sw.toString())).append("\"\n,");
}
String message = failure.getMessage();
if(message != null) {
sb.append("message:").append("\"").append(escapeJavascript(message)).append("\"");
}
}
sb.append("}");
}
sb.append("]");
}
}
sb.append("]");
return sb.toString();
}
private String formatCompilationExceptions() {
StringBuilder sb = new StringBuilder();
sb.append("[");
for (JavaCompilationException exception : compilationExceptions) {
if(sb.length() != 1) {
sb.append(",");
}
formatException(sb, exception);
}
sb.append("]");
return sb.toString();
}
private void formatException(StringBuilder sb, JavaCompilationException exception) {
sb.append("[");
boolean first = true;
for (Diagnostic diagnostic : exception.getDiagnostics()) {
if(!first) {
sb.append(",");
}
first = false;
sb.append("{");
sb.append("kind:").append("\"").append(diagnostic.getKind())
.append("\"\n,");
if(diagnostic.getSource() != null) {
String filename = diagnostic.getSource().getName();
sb.append("sourceLines:").append(readSourceLines(new File(filename))).append("\n,");
filename = basedir.toPath().relativize(new File(filename).toPath()).toString();
sb.append("source:").append("\"").append(filename)
.append("\"\n,");
sb.append("lineNumber:").append("\"").append(diagnostic.getLineNumber())
.append("\"\n,");
}
sb.append("message:").append("\"").append(escapeJavascript(diagnostic.getMessage(Locale.getDefault())))
.append("\"\n");
sb.append("}");
}
sb.append("]");
}
private String readSourceLines(File file) {
StringBuilder sb = new StringBuilder();
try {
sb.append("[");
for(String line : Files.readAllLines(file.toPath(), Charset.forName("utf-8"))) {
if(sb.length() != 1) {
sb.append(" ,\n");
}
sb.append("\"").append(escapeHTML(line)).append("\"");
}
sb.append("]");
return sb.toString();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private String escapeJavascript(String message) {
String replaced = message.replace("\\", "\\\\").replace("\r\n", "\\n").replace("\n", "\\n").replace("\"","\\\"");
return replaced;
}
private String escapeHTML(String message) {
String replaced = message.replace("<", "<").replace(">", ">").replace("\"", """);
return replaced;
}
public ErrorReporter addTestFailulreException(TestFailureException e) {
this.testFailureExceptions.add(e);
return this;
}
public ErrorReporter pluginLoadFailed(Exception pluginLoadingException, PluginClassLoader pluginClassLoader) {
this.pluginLoadingException = pluginLoadingException;
this.pluginClassLoader = pluginClassLoader;
return this;
}
}
