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package io.honeybadger.reporter;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.honeybadger.reporter.config.ConfigContext;
import io.honeybadger.reporter.config.SystemSettingsConfigContext;
import io.honeybadger.reporter.dto.HttpServletRequestFactory;
import io.honeybadger.reporter.dto.Notice;
import io.honeybadger.reporter.dto.NoticeDetails;
import io.honeybadger.reporter.dto.PlayHttpRequestFactory;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.HttpVersion;
import org.apache.http.client.fluent.Request;
import org.apache.http.client.fluent.Response;
import org.apache.http.entity.ContentType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URI;
import java.nio.charset.StandardCharsets;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;
import java.util.UUID;
/**
* Reporter utility class that gives a simple interface for sending Java
* {@link java.lang.Throwable} classes to the Honeybadger API.
*
* @author page1
* @author Elijah Zupancic
* @since 1.0.0
*/
public class HoneybadgerReporter implements NoticeReporter {
private static Set> exceptionContextClasses = findExceptionContextClasses();
private ConfigContext config;
private final Logger logger = LoggerFactory.getLogger(getClass());
private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper()
.setSerializationInclusion(JsonInclude.Include.NON_NULL);
public HoneybadgerReporter() {
this(new SystemSettingsConfigContext());
}
public HoneybadgerReporter(final ConfigContext config) {
this.setConfig(config);
if (config.getApiKey() == null) {
throw new IllegalArgumentException("API key must be set");
}
if (config.getApiKey().isEmpty()) {
throw new IllegalArgumentException("API key must not be empty");
}
if (config.getHoneybadgerUrl() == null) {
throw new IllegalArgumentException("Honeybadger URL must be set");
}
if (config.getMaximumErrorReportingRetries() == null) {
throw new IllegalArgumentException("Honeybadger property honeybadger.maximum_retry_attempts must be set");
}
if (config.getMaximumErrorReportingRetries() < 0) {
throw new IllegalArgumentException("Honeybadger property honeybadger.maximum_retry_attempts must be an " +
"integer greater than or equal to 0");
}
}
/**
* Send any Java {@link java.lang.Throwable} to the Honeybadger error
* reporting interface.
*
* @param error error to report
* @return UUID of error created, if there was a problem null
*/
@Override
public NoticeReportResult reportError(final Throwable error) {
return reportError(error, null, null, Collections.emptySet());
}
/**
* Send any Java {@link java.lang.Throwable} to the Honeybadger error
* reporting interface.
*
* Currently only {@link javax.servlet.http.HttpServletRequest} objects
* are supported as request properties.
*
* @param error error to report
* @param request Object to parse for request properties
* @return UUID of error created, if there was a problem or ignored null
*/
@Override
public NoticeReportResult reportError(final Throwable error,
final Object request) {
return reportError(error, request, null, Collections.emptySet());
}
/**
* Send any Java {@link java.lang.Throwable} to the Honeybadger error
* reporting interface.
*
* Currently only {@link javax.servlet.http.HttpServletRequest} objects
* are supported as request properties.
*
* @param error error to report
* @param request Object to parse for request properties
* @param message message to report instead of message associated with exception
* @return UUID of error created, if there was a problem or ignored null
*/
@Override
public NoticeReportResult reportError(final Throwable error,
final Object request,
final String message) {
return reportError(error, request, message, Collections.emptySet());
}
/**
* Send any Java {@link java.lang.Throwable} to the Honeybadger error
* reporting interface.
*
* Currently only {@link javax.servlet.http.HttpServletRequest} objects
* are supported as request properties.
*
* @param error error to report
* @param request Object to parse for request properties
* @param message message to report instead of message associated with exception
* @param tags tag values (duplicates will be removed)
* @return UUID of error created, if there was a problem or ignored null
*/
@Override
public NoticeReportResult reportError(final Throwable error,
final Object request,
final String message,
final Iterable tags) {
if (error == null) {
return null;
}
final Set tagsSet = aggregateTags(tags);
if (request == null) {
return submitError(error, null, message, tagsSet);
}
final io.honeybadger.reporter.dto.Request requestDetails;
// CUSTOM USAGE OF REQUEST DTO
if (request instanceof io.honeybadger.reporter.dto.Request) {
logger.debug("Reporting using a request DTO");
requestDetails = (io.honeybadger.reporter.dto.Request)request;
// SERVLET REQUEST - ALSO USED BY SPRING
} else if (supportsHttpServletRequest() && request instanceof javax.servlet.http.HttpServletRequest) {
logger.debug("Reporting from a servlet context");
requestDetails = HttpServletRequestFactory.create(getConfig(),
(javax.servlet.http.HttpServletRequest) request);
// PLAY FRAMEWORK REQUEST
} else if (supportsPlayHttpRequest() && request instanceof play.mvc.Http.Request) {
logger.debug("Reporting from the Play Framework");
requestDetails = PlayHttpRequestFactory.create(getConfig(),
(play.mvc.Http.Request)request);
} else {
logger.debug("No request object available");
requestDetails = null;
}
return submitError(error, requestDetails, message, tagsSet);
}
@Override
public ConfigContext getConfig() {
return config;
}
/**
* Processes an {@link Iterable} of Strings, discards invalid values and
* aggregates all values into an ordered set.
*
* @param tags tag values
* @return unique set of tags in the same order as input values
*/
protected Set aggregateTags(final Iterable tags) {
if (tags == null || tags == Collections.EMPTY_SET) {
return Collections.emptySet();
}
final Iterator itr = tags.iterator();
if (!itr.hasNext()) {
return Collections.emptySet();
}
final LinkedHashSet tagHashSet = new LinkedHashSet<>();
while (itr.hasNext()) {
final String tag = itr.next();
if (tag == null) {
continue;
}
final String trimmed = tag.trim();
if (!trimmed.isEmpty()) {
tagHashSet.add(trimmed);
}
}
return Collections.unmodifiableSet(tagHashSet);
}
@SuppressWarnings("LiteralClassName")
protected boolean supportsHttpServletRequest() {
try {
Class.forName("javax.servlet.http.HttpServletRequest");
return true;
} catch (ClassNotFoundException e) {
return false;
}
}
@SuppressWarnings("LiteralClassName")
protected boolean supportsPlayHttpRequest() {
try {
Class.forName("play.mvc.Http", false, this.getClass().getClassLoader());
return true;
} catch (ClassNotFoundException e) {
return false;
}
}
protected NoticeReportResult submitError(final Throwable error,
final io.honeybadger.reporter.dto.Request request,
final String message,
final Set tags) {
final String errorClassName = error.getClass().getName();
if (errorClassName != null &&
getConfig().getExcludedClasses().contains(errorClassName)) {
return null;
}
final Notice notice = new Notice(getConfig());
if (request != null) {
final String reportedMessage;
if (message != null && !message.isEmpty()) {
reportedMessage = message;
} else {
reportedMessage = parseMessage(error);
}
NoticeDetails noticeDetails = new NoticeDetails(
getConfig(), error, tags, reportedMessage);
notice.setRequest(request).setError(noticeDetails);
} else {
NoticeDetails noticeDetails = new NoticeDetails(getConfig(), error, tags);
notice.setError(noticeDetails);
}
/* We may need to retry sending the JSON, so we temporarily keep it as a string.
Future enhancement may convert this to a stream, but that's likely to require a
bit more testing.
*/
String json;
try {
json = OBJECT_MAPPER.writeValueAsString(notice);
} catch (JsonProcessingException e) {
logger.error("JSON Serialization of the Notice Failed.", e);
logger.error("Original Error", error);
return null;
}
for (int retries = 0; retries <= config.getMaximumErrorReportingRetries(); retries++) {
try {
HttpResponse response = sendToHoneybadger(json)
.returnResponse();
int responseCode = response.getStatusLine().getStatusCode();
if (responseCode != HttpStatus.SC_CREATED) {
logger.error("Honeybadger did not respond with the " +
"correct code. Response was [{}]. Retries={}, Maximum={}",
responseCode, retries, config.getMaximumErrorReportingRetries());
} else {
UUID id = parseErrorId(response);
return new NoticeReportResult(id, notice, error);
}
} catch (IOException e) {
String msg = String.format("There was an error when trying " +
"to send the error to " +
"Honeybadger. Retries=%d, Maximum=%d", retries,
config.getMaximumErrorReportingRetries());
logger.error(msg, e);
logger.error("Original Error", error);
}
}
return null;
}
private UUID parseErrorId(final HttpResponse response)
throws IOException {
try (InputStream in = response.getEntity().getContent();
Reader reader = new InputStreamReader(in, StandardCharsets.UTF_8)) {
JsonNode responseNode = OBJECT_MAPPER.readTree(reader);
if (responseNode.has("id")) {
return UUID.fromString(responseNode.get("id").textValue());
} else {
return null;
}
}
}
/**
* Parses the exception message and strips out redundant context information
* if we are already sending the information as part of the error context.
*
* @param throwable throwable to parse message from
* @return string containing the throwable's error message
*/
private static String parseMessage(final Throwable throwable) {
if (exceptionClassHasContextedVariables(throwable.getClass())) {
final String msg = throwable.getMessage();
final int contextSeparatorPos = msg.indexOf("Exception Context:");
if (contextSeparatorPos == -1) {
return msg;
}
return msg.substring(0, contextSeparatorPos).trim();
} else {
return throwable.getMessage();
}
}
/**
* Send an error encoded in JSON to the Honeybadger API.
*
* @param jsonError Error JSON payload
* @return Status code from the Honeybadger API
* @throws IOException thrown when a network exception was encountered
*/
protected Response sendToHoneybadger(final String jsonError) throws IOException {
URI honeybadgerUrl = URI.create(
String.format("%s/%s", getConfig().getHoneybadgerUrl(), "v1/notices"));
Request request = buildRequest(honeybadgerUrl, jsonError);
return request.execute();
}
/**
* Builds a Apache HTTP Client request object configured for calling the
* Honeybadger API.
*
* @param honeybadgerUrl Endpoint location
* @param jsonError Error JSON payload
* @return a configured request object
*/
private Request buildRequest(final URI honeybadgerUrl, final String jsonError) {
Request request = Request
.Post(honeybadgerUrl)
.addHeader("X-API-Key", getConfig().getApiKey())
.addHeader("Accept", "application/json")
.version(HttpVersion.HTTP_1_1)
.bodyString(jsonError, ContentType.APPLICATION_JSON);
if (System.getProperty("http.proxyHost") != null &&
!System.getProperty("http.proxyHost").isEmpty()) {
int port = Integer.parseInt(System.getProperty("http.proxyPort"));
HttpHost proxy = new HttpHost(System.getProperty("http.proxyHost"),
port);
request.viaProxy(proxy);
}
return request;
}
/**
* Tests to see if a given exception class has embedded context variables
* like {@link org.apache.commons.lang3.exception.ContextedException}.
*
* @param clazz class to compare
* @return true if a contexted exception, otherwise false
*/
private static boolean exceptionClassHasContextedVariables(final Class clazz) {
if (exceptionContextClasses == null || exceptionContextClasses.isEmpty()) {
return false;
}
for (Class exceptionClass : exceptionContextClasses) {
if (exceptionClass.isAssignableFrom(clazz)) {
return true;
}
}
return false;
}
/**
* @return The Apache Commons Lang3 exception context class or null if not found
*/
@SuppressWarnings("LiteralClassName")
private static Set> findExceptionContextClasses() {
final String[] classNames = new String[] {
"org.apache.commons.lang3.exception.ExceptionContext"
};
final Set> classes = new LinkedHashSet<>(classNames.length);
for (String className : classNames) {
try {
classes.add(Class.forName(className));
} catch (ClassNotFoundException ignored) {
}
}
return Collections.unmodifiableSet(classes);
}
protected void setConfig(final ConfigContext config) {
this.config = config;
}
}
