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Code Analyzer for JavaScript/TypeScript/CSS
/*
* SonarQube JavaScript Plugin
* Copyright (C) 2011-2022 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.plugins.javascript.eslint;
import com.google.gson.Gson;
import com.google.gson.JsonSyntaxException;
import java.io.File;
import java.io.IOException;
import java.net.InetAddress;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse.BodyHandlers;
import java.nio.file.Path;
import java.time.Duration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import javax.annotation.Nullable;
import org.sonar.api.SonarProduct;
import org.sonar.api.batch.sensor.SensorContext;
import org.sonar.api.utils.TempFolder;
import org.sonar.api.utils.log.Logger;
import org.sonar.api.utils.log.Loggers;
import org.sonar.api.utils.log.Profiler;
import org.sonarsource.nodejs.NodeCommand;
import org.sonarsource.nodejs.NodeCommandBuilder;
import org.sonarsource.nodejs.NodeCommandException;
import static java.util.Collections.emptyList;
import static org.sonar.plugins.javascript.eslint.NetUtils.findOpenPort;
public class EslintBridgeServerImpl implements EslintBridgeServer {
private enum Status {
NOT_STARTED,
FAILED,
STARTED
}
private static final Logger LOG = Loggers.get(EslintBridgeServerImpl.class);
private static final Profiler PROFILER = Profiler.createIfDebug(LOG);
private static final int DEFAULT_TIMEOUT_SECONDS = 5 * 60;
// internal property to set "--max-old-space-size" for Node process running this server
private static final String MAX_OLD_SPACE_SIZE_PROPERTY = "sonar.javascript.node.maxspace";
private static final String ALLOW_TS_PARSER_JS_FILES = "sonar.javascript.allowTsParserJsFiles";
private static final Gson GSON = new Gson();
private static final String DEPLOY_LOCATION = "eslint-bridge-bundle";
private final HttpClient client;
private final NodeCommandBuilder nodeCommandBuilder;
private final int timeoutSeconds;
private final Bundle bundle;
private final String hostAddress;
private int port;
private NodeCommand nodeCommand;
private Status status = Status.NOT_STARTED;
private final RulesBundles rulesBundles;
private final NodeDeprecationWarning deprecationWarning;
private final Path deployLocation;
private final Monitoring monitoring;
private static final int HEARTBEAT_INTERVAL_SECONDS = 5;
private final ScheduledExecutorService heartbeatService;
private ScheduledFuture heartbeatFuture;
// Used by pico container for dependency injection
public EslintBridgeServerImpl(NodeCommandBuilder nodeCommandBuilder, Bundle bundle, RulesBundles rulesBundles,
NodeDeprecationWarning deprecationWarning, TempFolder tempFolder, Monitoring monitoring) {
this(nodeCommandBuilder, DEFAULT_TIMEOUT_SECONDS, bundle, rulesBundles, deprecationWarning, tempFolder, monitoring);
}
EslintBridgeServerImpl(NodeCommandBuilder nodeCommandBuilder,
int timeoutSeconds,
Bundle bundle,
RulesBundles rulesBundles,
NodeDeprecationWarning deprecationWarning, TempFolder tempFolder, Monitoring monitoring) {
this.nodeCommandBuilder = nodeCommandBuilder;
this.timeoutSeconds = timeoutSeconds;
this.bundle = bundle;
this.client = HttpClient.newBuilder()
.connectTimeout(Duration.ofSeconds(timeoutSeconds))
.build();
this.rulesBundles = rulesBundles;
this.deprecationWarning = deprecationWarning;
this.hostAddress = InetAddress.getLoopbackAddress().getHostAddress();
this.deployLocation = tempFolder.newDir(DEPLOY_LOCATION).toPath();
this.monitoring = monitoring;
this.heartbeatService = Executors.newSingleThreadScheduledExecutor();
}
void heartbeat() {
LOG.trace("Pinging the server");
isAlive();
}
int getTimeoutSeconds() {
return timeoutSeconds;
}
void deploy() throws IOException {
bundle.deploy(deployLocation);
}
void startServer(SensorContext context, List deployedBundles) throws IOException {
PROFILER.startDebug("Starting server");
port = findOpenPort();
File scriptFile = new File(bundle.startServerScript());
if (!scriptFile.exists()) {
throw new NodeCommandException("Node.js script to start eslint-bridge server doesn't exist: " + scriptFile.getAbsolutePath());
}
String bundles = deployedBundles.stream().map(Path::toString).collect(Collectors.joining(File.pathSeparator));
initNodeCommand(context, scriptFile, context.fileSystem().workDir(), bundles);
LOG.debug("Starting Node.js process to start eslint-bridge server at port " + port);
nodeCommand.start();
if (!waitServerToStart(timeoutSeconds * 1000)) {
status = Status.FAILED;
throw new NodeCommandException("Failed to start server (" + timeoutSeconds + "s timeout)");
} else {
status = Status.STARTED;
if (heartbeatFuture == null) {
LOG.trace("Starting heartbeat service");
heartbeatFuture = heartbeatService.scheduleAtFixedRate(this::heartbeat, HEARTBEAT_INTERVAL_SECONDS, HEARTBEAT_INTERVAL_SECONDS, TimeUnit.SECONDS);
}
}
PROFILER.stopDebug();
deprecationWarning.logNodeDeprecation(nodeCommand.getActualNodeVersion().major());
}
boolean waitServerToStart(int timeoutMs) {
int sleepStep = 100;
long start = System.currentTimeMillis();
try {
Thread.sleep(sleepStep);
while (!isAlive()) {
if (System.currentTimeMillis() - start > timeoutMs) {
return false;
}
Thread.sleep(sleepStep);
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
return true;
}
private void initNodeCommand(SensorContext context, File scriptFile, File workDir, String bundles) throws IOException {
boolean allowTsParserJsFiles = context.config().getBoolean(ALLOW_TS_PARSER_JS_FILES).orElse(true);
boolean isSonarLint = context.runtime().getProduct() == SonarProduct.SONARLINT;
if (isSonarLint) {
LOG.info("Running in SonarLint context, metrics will not be computed.");
}
var outputConsumer = monitoring.isMonitoringEnabled() ?
new LogOutputConsumer().andThen(new MonitoringOutputConsumer(monitoring)) : new LogOutputConsumer();
// enable per rule performance tracking https://eslint.org/docs/1.0.0/developer-guide/working-with-rules#per-rule-performance
nodeCommandBuilder
.outputConsumer(outputConsumer)
.pathResolver(bundle)
.minNodeVersion(NodeDeprecationWarning.MIN_SUPPORTED_NODE_VERSION)
.configuration(context.config())
.script(scriptFile.getAbsolutePath())
.scriptArgs(String.valueOf(port), hostAddress, workDir.getAbsolutePath(), String.valueOf(allowTsParserJsFiles), String.valueOf(isSonarLint), bundles)
.env(getEnv());
context.config()
.getInt(MAX_OLD_SPACE_SIZE_PROPERTY)
.ifPresent(nodeCommandBuilder::maxOldSpaceSize);
nodeCommand = nodeCommandBuilder.build();
}
private Map getEnv() {
Map env = new HashMap<>();
if (monitoring.isMonitoringEnabled()) {
env.put("TIMING", "all");
}
// see https://github.com/SonarSource/SonarJS/issues/2803
env.put("BROWSERSLIST_IGNORE_OLD_DATA", "true");
return env;
}
@Override
public void startServerLazily(SensorContext context) throws IOException {
if (status == Status.FAILED) {
// required for SonarLint context to avoid restarting already failed server
throw new ServerAlreadyFailedException();
}
try {
if (isAlive()) {
LOG.debug("eslint-bridge server is up, no need to start.");
return;
} else if (status == Status.STARTED) {
status = Status.FAILED;
throw new ServerAlreadyFailedException();
}
deploy();
List deployedBundles = rulesBundles.deploy(deployLocation.resolve("package"));
rulesBundles
.getUcfgRulesBundle()
.ifPresent(rulesBundle -> PluginInfo.setUcfgPluginVersion(rulesBundle.bundleVersion()));
startServer(context, deployedBundles);
} catch (NodeCommandException e) {
status = Status.FAILED;
throw e;
}
}
@Override
public void initLinter(List rules, List environments, List globals, AnalysisMode analysisMode) throws IOException {
initLinter(AnalysisMode.DEFAULT_LINTER_ID, rules, environments, globals);
if (analysisMode == AnalysisMode.SKIP_UNCHANGED) {
initLinter(AnalysisMode.UNCHANGED_LINTER_ID, AnalysisMode.getUnchangedFileRules(rules), environments, globals);
}
}
private void initLinter(String linterId, List rules, List environments, List globals) throws IOException {
InitLinterRequest initLinterRequest = new InitLinterRequest(linterId, rules, environments, globals);
String request = GSON.toJson(initLinterRequest);
String response = request(request, "init-linter");
if (!"OK!".equals(response)) {
throw new IllegalStateException("Failed to initialize linter");
}
}
@Override
public AnalysisResponse analyzeJavaScript(JsAnalysisRequest request) throws IOException {
String json = GSON.toJson(request);
return response(request(json, "analyze-js"), request.filePath);
}
@Override
public AnalysisResponse analyzeTypeScript(JsAnalysisRequest request) throws IOException {
String json = GSON.toJson(request);
return response(request(json, "analyze-ts"), request.filePath);
}
@Override
public AnalysisResponse analyzeWithProgram(JsAnalysisRequest request) throws IOException {
return response(request(GSON.toJson(request), "analyze-with-program"), request.filePath);
}
@Override
public AnalysisResponse analyzeCss(CssAnalysisRequest request) throws IOException {
String json = GSON.toJson(request);
return response(request(json, "analyze-css"), request.filePath);
}
@Override
public AnalysisResponse analyzeYaml(JsAnalysisRequest request) throws IOException {
String json = GSON.toJson(request);
return response(request(json, "analyze-yaml"), request.filePath);
}
private String request(String json, String endpoint) throws IOException {
var request = HttpRequest.newBuilder()
.uri(url(endpoint))
.timeout(Duration.ofSeconds(timeoutSeconds))
.header("Content-Type", "application/json")
.POST(HttpRequest.BodyPublishers.ofString(json))
.build();
try {
var response = client.send(request, BodyHandlers.ofString());
return response.body();
} catch (InterruptedException e) {
throw handleInterruptedException(e, "Request " + endpoint + " was interrupted.");
} catch (IOException e) {
String msg = "eslint-bridge Node.js process is unresponsive. This is most likely caused by process running out of memory." +
" Consider setting sonar.javascript.node.maxspace to higher value (e.g. 4096).";
LOG.error(msg);
throw new IllegalStateException("eslint-bridge is unresponsive", e);
}
}
private IllegalStateException handleInterruptedException(InterruptedException e, String msg) {
LOG.error(msg, e);
Thread.currentThread().interrupt();
return new IllegalStateException(msg, e);
}
private static AnalysisResponse response(String result, String filePath) {
try {
return GSON.fromJson(result, AnalysisResponse.class);
} catch (JsonSyntaxException e) {
String msg = "Failed to parse response for file " + filePath + ": \n-----\n" + result + "\n-----\n";
LOG.error(msg, e);
throw new IllegalStateException("Failed to parse response", e);
}
}
public boolean isAlive() {
if (nodeCommand == null) {
return false;
}
var request = HttpRequest.newBuilder(url("status")).GET().build();
try {
var response = client.send(request, BodyHandlers.ofString());
String body = response.body();
return "OK!".equals(body);
} catch (InterruptedException e) {
throw handleInterruptedException(e, "isAlive was interrupted");
} catch (IOException e) {
return false;
}
}
@Override
public boolean newTsConfig() {
try {
var response = request("", "new-tsconfig");
return "OK!".equals(response);
} catch (IOException e) {
LOG.error("Failed to post new-tsconfig", e);
}
return false;
}
TsConfigResponse tsConfigFiles(String tsconfigAbsolutePath) {
String result = null;
try {
TsConfigRequest tsConfigRequest = new TsConfigRequest(tsconfigAbsolutePath);
result = request(GSON.toJson(tsConfigRequest), "tsconfig-files");
return GSON.fromJson(result, TsConfigResponse.class);
} catch (IOException e) {
LOG.error("Failed to request files for tsconfig: " + tsconfigAbsolutePath, e);
} catch (JsonSyntaxException e) {
LOG.error("Failed to parse response when requesting files for tsconfig: " + tsconfigAbsolutePath + ": \n-----\n" + result + "\n-----\n");
}
return new TsConfigResponse(emptyList(), emptyList(), result, null);
}
@Override
public TsConfigFile loadTsConfig(String filename) {
EslintBridgeServer.TsConfigResponse tsConfigResponse = tsConfigFiles(filename);
if (tsConfigResponse.error != null) {
LOG.error(tsConfigResponse.error);
}
return new TsConfigFile(filename, emptyListIfNull(tsConfigResponse.files), emptyListIfNull(tsConfigResponse.projectReferences));
}
@Override
public TsProgram createProgram(TsProgramRequest tsProgramRequest) throws IOException {
var response = request(GSON.toJson(tsProgramRequest), "create-program");
return GSON.fromJson(response, TsProgram.class);
}
@Override
public boolean deleteProgram(TsProgram tsProgram) throws IOException {
var programToDelete = new TsProgram(tsProgram.programId, null, null);
var response = request(GSON.toJson(programToDelete), "delete-program");
return "OK!".equals(response);
}
@Override
public TsConfigFile createTsConfigFile(String content) throws IOException {
var response = request(content, "create-tsconfig-file");
return GSON.fromJson(response, TsConfigFile.class);
}
private static List emptyListIfNull(@Nullable List list) {
return list == null ? emptyList() : list;
}
@Override
public void clean() {
LOG.trace("Closing heartbeat service");
heartbeatService.shutdownNow();
if (nodeCommand != null && isAlive()) {
try {
request("", "close");
} catch (IOException e) {
LOG.warn("Failed to close server", e);
}
nodeCommand.waitFor();
nodeCommand = null;
}
}
/**
* Required for testing purposes
*/
void waitFor() {
nodeCommand.waitFor();
}
@Override
public String getCommandInfo() {
if (nodeCommand == null) {
return "Node.js command to start eslint-bridge server was not built yet.";
} else {
return "Node.js command to start eslint-bridge was: " + nodeCommand;
}
}
@Override
public void start() {
// Server is started lazily from the org.sonar.plugins.javascript.eslint.EslintBasedRulesSensor
}
@Override
public void stop() {
clean();
}
private URI url(String endpoint) {
try {
return new URI("http", null, hostAddress, port, "/" + endpoint, null, null);
} catch (URISyntaxException e) {
throw new IllegalStateException("Invalid URI: " + e.getMessage(), e);
}
}
static class TsConfigRequest {
final String tsconfig;
TsConfigRequest(String tsconfig) {
this.tsconfig = tsconfig;
}
}
static class InitLinterRequest {
String linterId;
List rules;
List environments;
List globals;
InitLinterRequest(String linterId, List rules, List environments, List globals) {
this.linterId = linterId;
this.rules = rules;
this.environments = environments;
this.globals = globals;
}
}
static class MonitoringOutputConsumer implements Consumer {
// number of spaces after "Rule" depends on the rule keys lengths
private static final Pattern HEADER = Pattern.compile("Rule\\s+\\|\\s+Time \\(ms\\)\\s+\\|\\s+Relative\\s*");
private static final Pattern RULE_LINE = Pattern.compile("(\\S+)\\s*\\|\\s*(\\d+\\.?\\d+)\\s*\\|\\s*(\\d+\\.?\\d+)%");
private final Monitoring monitoring;
boolean headerDetected;
MonitoringOutputConsumer(Monitoring monitoring) {
this.monitoring = monitoring;
}
@Override
public void accept(String s) {
if (HEADER.matcher(s).matches()) {
headerDetected = true;
return;
}
if (headerDetected) {
try {
var matcher = RULE_LINE.matcher(s);
if (matcher.matches()) {
var ruleKey = matcher.group(1);
var timeMs = Double.parseDouble(matcher.group(2));
var relative = Double.parseDouble(matcher.group(3));
monitoring.ruleStatistics(ruleKey, timeMs, relative);
}
} catch (Exception e) {
LOG.error("Error parsing rule timing data", e);
}
}
}
}
static class LogOutputConsumer implements Consumer {
@Override
public void accept(String message) {
if (message.startsWith("DEBUG")) {
LOG.debug(message.substring(5).trim());
} else if (message.startsWith("WARN")) {
LOG.warn(message.substring(4).trim());
} else {
LOG.info(message);
}
}
}
}