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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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.elasticsearch.hadoop.rest.commonshttp;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.elasticsearch.hadoop.EsHadoopIllegalArgumentException;
import org.elasticsearch.hadoop.EsHadoopIllegalStateException;
import org.elasticsearch.hadoop.cfg.ConfigurationOptions;
import org.elasticsearch.hadoop.cfg.Settings;
import org.elasticsearch.hadoop.rest.DelegatingInputStream;
import org.elasticsearch.hadoop.rest.EsHadoopInvalidRequest;
import org.elasticsearch.hadoop.rest.EsHadoopTransportException;
import org.elasticsearch.hadoop.rest.HeaderProcessor;
import org.elasticsearch.hadoop.rest.Request;
import org.elasticsearch.hadoop.rest.Response;
import org.elasticsearch.hadoop.rest.ReusableInputStream;
import org.elasticsearch.hadoop.rest.SimpleResponse;
import org.elasticsearch.hadoop.rest.Transport;
import org.elasticsearch.hadoop.rest.commonshttp.auth.EsHadoopAuthPolicies;
import org.elasticsearch.hadoop.rest.commonshttp.auth.bearer.EsApiKeyAuthScheme;
import org.elasticsearch.hadoop.rest.commonshttp.auth.bearer.EsApiKeyCredentials;
import org.elasticsearch.hadoop.rest.commonshttp.auth.spnego.SpnegoAuthScheme;
import org.elasticsearch.hadoop.rest.commonshttp.auth.spnego.SpnegoCredentials;
import org.elasticsearch.hadoop.rest.stats.Stats;
import org.elasticsearch.hadoop.rest.stats.StatsAware;
import org.elasticsearch.hadoop.security.SecureSettings;
import org.elasticsearch.hadoop.security.User;
import org.elasticsearch.hadoop.security.UserProvider;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.Credentials;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.Header;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.HostConfiguration;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.HttpClient;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.HttpConnection;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.HttpConnectionManager;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.HttpMethod;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.HttpState;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.HttpStatus;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.SimpleHttpConnectionManager;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.URI;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.URIException;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.UsernamePasswordCredentials;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.auth.AuthChallengeParser;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.auth.AuthPolicy;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.auth.AuthScheme;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.auth.AuthScope;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.auth.AuthState;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.methods.EntityEnclosingMethod;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.methods.GetMethod;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.methods.HeadMethod;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.methods.PostMethod;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.methods.PutMethod;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.params.HttpClientParams;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.params.HttpConnectionManagerParams;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.params.HttpMethodParams;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.protocol.Protocol;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.protocol.ProtocolSocketFactory;
import org.elasticsearch.hadoop.thirdparty.apache.commons.httpclient.protocol.SecureProtocolSocketFactory;
import org.elasticsearch.hadoop.util.ByteSequence;
import org.elasticsearch.hadoop.util.ReflectionUtils;
import org.elasticsearch.hadoop.util.StringUtils;
import org.elasticsearch.hadoop.util.encoding.HttpEncodingTools;
import javax.security.auth.kerberos.KerberosPrincipal;
import java.io.ByteArrayInputStream;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Method;
import java.net.Socket;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
/**
* Transport implemented on top of Commons Http. Provides transport retries.
*/
public class CommonsHttpTransport implements Transport, StatsAware {
private static final String WWW_AUTHENTICATE = "WWW-Authenticate";
private static Log log = LogFactory.getLog(CommonsHttpTransport.class);
private static final Method GET_SOCKET;
static {
GET_SOCKET = ReflectionUtils.findMethod(HttpConnection.class, "getSocket", (Class[]) null);
ReflectionUtils.makeAccessible(GET_SOCKET);
}
private final HttpClient client;
private final HeaderProcessor headers;
protected Stats stats = new Stats();
private HttpConnection conn;
private String proxyInfo = "";
private final String httpInfo;
private final boolean sslEnabled;
private final String pathPrefix;
private final Settings settings;
private final SecureSettings secureSettings;
private final String clusterName;
private final UserProvider userProvider;
private UserProvider proxyUserProvider = null;
private String runAsUser = null;
/** If the HTTP Connection is made through a proxy */
private boolean isProxied = false;
/** If the Socket Factory used for HTTP Connections extends SecureProtocolSocketFactory */
private boolean isSecure = false;
private static class ResponseInputStream extends DelegatingInputStream implements ReusableInputStream {
private final HttpMethod method;
private final boolean reusable;
public ResponseInputStream(HttpMethod http) throws IOException {
super(http.getResponseBodyAsStream());
this.method = http;
reusable = (delegate() instanceof ByteArrayInputStream);
}
@Override
public int hashCode() {
return super.hashCode();
}
@Override
public boolean equals(Object obj) {
return super.equals(obj);
}
@Override
public InputStream copy() {
try {
return (reusable ? method.getResponseBodyAsStream() : null);
} catch (IOException ex) {
throw new EsHadoopIllegalStateException(ex);
}
}
@Override
public void close() throws IOException {
if (!isNull()) {
try {
super.close();
} catch (IOException e) {
// silently ignore
}
}
method.releaseConnection();
}
}
private class SocketTrackingConnectionManager extends SimpleHttpConnectionManager {
@Override
public HttpConnection getConnectionWithTimeout(HostConfiguration hostConfiguration, long timeout) {
conn = super.getConnectionWithTimeout(hostConfiguration, timeout);
return conn;
}
public void close() {
if (httpConnection != null) {
if (httpConnection.isOpen()) {
releaseConnection(httpConnection);
}
httpConnection.close();
}
httpConnection = null;
conn = null;
}
}
public CommonsHttpTransport(Settings settings, String host) {
this(settings, new SecureSettings(settings), host);
}
public CommonsHttpTransport(Settings settings, SecureSettings secureSettings, String host) {
if (log.isDebugEnabled()) {
log.debug("Creating new CommonsHttpTransport");
}
this.settings = settings;
this.secureSettings = secureSettings;
this.clusterName = settings.getClusterInfoOrUnnamedLatest().getClusterName().getName(); // May be a bootstrap client.
if (StringUtils.hasText(settings.getSecurityUserProviderClass())) {
this.userProvider = UserProvider.create(settings);
} else {
this.userProvider = null;
}
httpInfo = host;
sslEnabled = settings.getNetworkSSLEnabled();
String pathPref = settings.getNodesPathPrefix();
pathPrefix = (StringUtils.hasText(pathPref) ? addLeadingSlashIfNeeded(StringUtils.trimWhitespace(pathPref)) : StringUtils.trimWhitespace(pathPref));
HttpClientParams params = new HttpClientParams();
params.setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(
settings.getHttpRetries(), false) {
@Override
public boolean retryMethod(HttpMethod method, IOException exception, int executionCount) {
if (super.retryMethod(method, exception, executionCount)) {
stats.netRetries++;
return true;
}
return false;
}
});
// Max time to wait for a connection from the connectionMgr pool
params.setConnectionManagerTimeout(settings.getHttpTimeout());
// Max time to wait for data from a connection.
params.setSoTimeout((int) settings.getHttpTimeout());
// explicitly set the charset
params.setCredentialCharset(StringUtils.UTF_8.name());
params.setContentCharset(StringUtils.UTF_8.name());
HostConfiguration hostConfig = new HostConfiguration();
hostConfig = setupSSLIfNeeded(settings, secureSettings, hostConfig);
hostConfig = setupSocksProxy(settings, secureSettings, hostConfig);
Object[] authSettings = setupHttpOrHttpsProxy(settings, secureSettings, hostConfig);
hostConfig = (HostConfiguration) authSettings[0];
try {
hostConfig.setHost(new URI(escapeUri(host, sslEnabled), false));
} catch (IOException ex) {
throw new EsHadoopTransportException("Invalid target URI " + host, ex);
}
client = new HttpClient(params, new SocketTrackingConnectionManager());
client.setHostConfiguration(hostConfig);
addHttpAuth(settings, secureSettings, authSettings);
completeAuth(authSettings);
HttpConnectionManagerParams connectionParams = client.getHttpConnectionManager().getParams();
// make sure to disable Nagle's protocol
connectionParams.setTcpNoDelay(true);
// Max time to wait to establish an initial HTTP connection
connectionParams.setConnectionTimeout((int) settings.getHttpTimeout());
this.headers = new HeaderProcessor(settings);
if (log.isTraceEnabled()) {
log.trace("Opening HTTP transport to " + httpInfo);
}
}
private HostConfiguration setupSSLIfNeeded(Settings settings, SecureSettings secureSettings, HostConfiguration hostConfig) {
if (!sslEnabled) {
return hostConfig;
}
// we actually have a socks proxy, let's start the setup
if (log.isDebugEnabled()) {
log.debug("SSL Connection enabled");
}
isSecure = true;
//
// switch protocol
// due to how HttpCommons work internally this dance is best to be kept as is
//
String schema = "https";
int port = 443;
SecureProtocolSocketFactory sslFactory = new SSLSocketFactory(settings, secureSettings);
replaceProtocol(sslFactory, schema, port);
return hostConfig;
}
private void addHttpAuth(Settings settings, SecureSettings secureSettings, Object[] authSettings) {
List authPrefs = new ArrayList();
if (StringUtils.hasText(settings.getNetworkHttpAuthUser())) {
HttpState state = (authSettings[1] != null ? (HttpState) authSettings[1] : new HttpState());
authSettings[1] = state;
// TODO: Limit this by hosts and ports
AuthScope scope = new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT, AuthScope.ANY_REALM, AuthPolicy.BASIC);
Credentials usernamePassword = new UsernamePasswordCredentials(settings.getNetworkHttpAuthUser(),
secureSettings.getSecureProperty(ConfigurationOptions.ES_NET_HTTP_AUTH_PASS));
state.setCredentials(scope, usernamePassword);
if (log.isDebugEnabled()) {
log.debug("Using detected HTTP Auth credentials...");
}
authPrefs.add(AuthPolicy.BASIC);
client.getParams().setAuthenticationPreemptive(true); // Preemptive auth only if there's basic creds.
}
// Try auth schemes based on currently logged in user:
if (userProvider != null) {
User user = userProvider.getUser();
// Add ApiKey Authentication if a key is present
if (log.isDebugEnabled()) {
log.debug("checking for token using cluster name [" + clusterName + "]");
}
if (user.getEsToken(clusterName) != null) {
HttpState state = (authSettings[1] != null ? (HttpState) authSettings[1] : new HttpState());
authSettings[1] = state;
// TODO: Limit this by hosts and ports
AuthScope scope = new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT, AuthScope.ANY_REALM, EsHadoopAuthPolicies.APIKEY);
Credentials tokenCredentials = new EsApiKeyCredentials(userProvider, clusterName);
state.setCredentials(scope, tokenCredentials);
if (log.isDebugEnabled()) {
log.debug("Using detected Token credentials...");
}
EsHadoopAuthPolicies.registerAuthSchemes();
authPrefs.add(EsHadoopAuthPolicies.APIKEY);
} else if (userProvider.isEsKerberosEnabled()) {
// Add SPNEGO auth if a kerberos principal exists on the user and the elastic principal is set
// Only do this if a token does not exist on the current user.
// The auth mode may say that it is Kerberos, but the client
// could be running in a remote JVM that does not have the
// Kerberos credentials available.
if (!StringUtils.hasText(settings.getNetworkSpnegoAuthElasticsearchPrincipal())) {
throw new EsHadoopIllegalArgumentException("Missing Elasticsearch Kerberos Principal name. " +
"Specify one with [" + ConfigurationOptions.ES_NET_SPNEGO_AUTH_ELASTICSEARCH_PRINCIPAL + "]");
}
// Pick the appropriate user provider to get credentials from for SPNEGO auth
UserProvider credentialUserProvider;
if (user.isProxyUser()) {
// If the user is a proxy user, get a provider for the real
// user and capture the proxy user's name to impersonate
proxyUserProvider = user.getRealUserProvider();
runAsUser = user.getUserName();
// Ensure that this real user even has Kerberos Creds:
User realUser = proxyUserProvider.getUser();
KerberosPrincipal realPrincipal = realUser.getKerberosPrincipal();
if (realPrincipal == null) {
throw new EsHadoopIllegalArgumentException("Could not locate Kerberos Principal on real user [" +
realUser.getUserName() + "] underneath proxy user [" + runAsUser + "]");
}
if (log.isDebugEnabled()) {
log.debug("Using detected SPNEGO credentials for real user [" + realUser.getUserName() + "] to proxy as [" +
runAsUser + "]...");
}
credentialUserProvider = proxyUserProvider;
} else if (user.getKerberosPrincipal() != null) {
// Ensure that the user principal exists
if (log.isDebugEnabled()) {
log.debug("Using detected SPNEGO credentials for user [" + user.getUserName() + "]...");
}
credentialUserProvider = userProvider;
} else {
throw new EsHadoopIllegalArgumentException("Could not locate Kerberos Principal on currently logged in user.");
}
// Add the user provider to credentials
HttpState state = (authSettings[1] != null ? (HttpState) authSettings[1] : new HttpState());
authSettings[1] = state;
// TODO: Limit this by hosts and ports
AuthScope scope = new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT, AuthScope.ANY_REALM, EsHadoopAuthPolicies.NEGOTIATE);
// TODO: This should just pass in the user provider instead of getting the user principal at this point.
Credentials credential = new SpnegoCredentials(credentialUserProvider, settings.getNetworkSpnegoAuthElasticsearchPrincipal());
state.setCredentials(scope, credential);
EsHadoopAuthPolicies.registerAuthSchemes();
authPrefs.add(EsHadoopAuthPolicies.NEGOTIATE);
}
} else {
if (log.isDebugEnabled()) {
log.debug("No UserProvider configured. Skipping Kerberos/Token auth settings");
}
}
if (log.isDebugEnabled()) {
log.debug("Using auth prefs: [" + authPrefs + "]");
}
client.getParams().setParameter(AuthPolicy.AUTH_SCHEME_PRIORITY, authPrefs);
}
private void completeAuth(Object[] authSettings) {
if (authSettings[1] != null) {
client.setState((HttpState) authSettings[1]);
}
}
private Object[] setupHttpOrHttpsProxy(Settings settings, SecureSettings secureSettings, HostConfiguration hostConfig) {
// return HostConfiguration + HttpState
Object[] results = new Object[2];
results[0] = hostConfig;
// set proxy settings
String proxyHost = null;
int proxyPort = -1;
if (sslEnabled) {
if (settings.getNetworkHttpsUseSystemProperties()) {
proxyHost = System.getProperty("https.proxyHost");
proxyPort = Integer.getInteger("https.proxyPort", -1);
}
if (StringUtils.hasText(settings.getNetworkProxyHttpsHost())) {
proxyHost = settings.getNetworkProxyHttpsHost();
}
if (settings.getNetworkProxyHttpsPort() > 0) {
proxyPort = settings.getNetworkProxyHttpsPort();
}
}
else {
if (settings.getNetworkHttpUseSystemProperties()) {
proxyHost = System.getProperty("http.proxyHost");
proxyPort = Integer.getInteger("http.proxyPort", -1);
}
if (StringUtils.hasText(settings.getNetworkProxyHttpHost())) {
proxyHost = settings.getNetworkProxyHttpHost();
}
if (settings.getNetworkProxyHttpPort() > 0) {
proxyPort = settings.getNetworkProxyHttpPort();
}
}
if (StringUtils.hasText(proxyHost)) {
hostConfig.setProxy(proxyHost, proxyPort);
isProxied = true;
proxyInfo = proxyInfo.concat(String.format(Locale.ROOT, "[%s proxy %s:%s]", (sslEnabled ? "HTTPS" : "HTTP"), proxyHost, proxyPort));
// client is not yet initialized so postpone state
if (sslEnabled) {
if (StringUtils.hasText(settings.getNetworkProxyHttpsUser())) {
if (!StringUtils.hasText(secureSettings.getSecureProperty(ConfigurationOptions.ES_NET_PROXY_HTTPS_PASS))) {
log.warn(String.format("HTTPS proxy user specified but no/empty password defined - double check the [%s] property", ConfigurationOptions.ES_NET_PROXY_HTTPS_PASS));
}
HttpState state = new HttpState();
state.setProxyCredentials(AuthScope.ANY, new UsernamePasswordCredentials(settings.getNetworkProxyHttpsUser(), secureSettings.getSecureProperty(ConfigurationOptions.ES_NET_PROXY_HTTPS_PASS)));
// client is not yet initialized so simply save the object for later
results[1] = state;
}
if (log.isDebugEnabled()) {
if (StringUtils.hasText(settings.getNetworkProxyHttpsUser())) {
log.debug(String.format("Using authenticated HTTPS proxy [%s:%s]", proxyHost, proxyPort));
}
else {
log.debug(String.format("Using HTTPS proxy [%s:%s]", proxyHost, proxyPort));
}
}
}
else {
if (StringUtils.hasText(settings.getNetworkProxyHttpUser())) {
if (!StringUtils.hasText(secureSettings.getSecureProperty(ConfigurationOptions.ES_NET_PROXY_HTTP_PASS))) {
log.warn(String.format("HTTP proxy user specified but no/empty password defined - double check the [%s] property", ConfigurationOptions.ES_NET_PROXY_HTTP_PASS));
}
HttpState state = new HttpState();
state.setProxyCredentials(AuthScope.ANY, new UsernamePasswordCredentials(settings.getNetworkProxyHttpUser(), secureSettings.getSecureProperty(ConfigurationOptions.ES_NET_PROXY_HTTP_PASS)));
// client is not yet initialized so simply save the object for later
results[1] = state;
}
if (log.isDebugEnabled()) {
if (StringUtils.hasText(settings.getNetworkProxyHttpUser())) {
log.debug(String.format("Using authenticated HTTP proxy [%s:%s]", proxyHost, proxyPort));
}
else {
log.debug(String.format("Using HTTP proxy [%s:%s]", proxyHost, proxyPort));
}
}
}
}
return results;
}
private HostConfiguration setupSocksProxy(Settings settings, SecureSettings secureSettings, HostConfiguration hostConfig) {
// set proxy settings
String proxyHost = null;
int proxyPort = -1;
String proxyUser = null;
String proxyPass = null;
if (settings.getNetworkHttpUseSystemProperties()) {
proxyHost = System.getProperty("socksProxyHost");
proxyPort = Integer.getInteger("socksProxyPort", -1);
proxyUser = System.getProperty("java.net.socks.username");
proxyPass = System.getProperty("java.net.socks.password");
}
if (StringUtils.hasText(settings.getNetworkProxySocksHost())) {
proxyHost = settings.getNetworkProxySocksHost();
}
if (settings.getNetworkProxySocksPort() > 0) {
proxyPort = settings.getNetworkProxySocksPort();
}
if (StringUtils.hasText(settings.getNetworkProxySocksUser())) {
proxyUser = settings.getNetworkProxySocksUser();
}
if (StringUtils.hasText(secureSettings.getSecureProperty(ConfigurationOptions.ES_NET_PROXY_SOCKS_PASS))) {
proxyPass = secureSettings.getSecureProperty(ConfigurationOptions.ES_NET_PROXY_SOCKS_PASS);
}
// we actually have a socks proxy, let's start the setup
if (StringUtils.hasText(proxyHost)) {
log.warn("Connecting to Elasticsearch through SOCKS proxy is deprecated in 6.6.0 and will be removed in a later release.");
isSecure = false;
isProxied = true;
proxyInfo = proxyInfo.concat(String.format("[SOCKS proxy %s:%s]", proxyHost, proxyPort));
if (!StringUtils.hasText(proxyUser)) {
log.warn(String.format(
"SOCKS proxy user specified but no/empty password defined - double check the [%s] property",
ConfigurationOptions.ES_NET_PROXY_SOCKS_PASS));
}
if (log.isDebugEnabled()) {
if (StringUtils.hasText(proxyUser)) {
log.debug(String.format("Using authenticated SOCKS proxy [%s:%s]", proxyHost, proxyPort));
}
else {
log.debug(String.format("Using SOCKS proxy [%s:%s]", proxyHost, proxyPort));
}
}
//
// switch protocol
// due to how HttpCommons work internally this dance is best to be kept as is
//
String schema = sslEnabled ? "https" : "http";
int port = sslEnabled ? 443 : 80;
SocksSocketFactory socketFactory = new SocksSocketFactory(proxyHost, proxyPort, proxyUser, proxyPass);
replaceProtocol(socketFactory, schema, port);
}
return hostConfig;
}
static void replaceProtocol(ProtocolSocketFactory socketFactory, String schema, int defaultPort) {
//
// switch protocol
// due to how HttpCommons work internally this dance is best to be kept as is
//
Protocol directHttp = Protocol.getProtocol(schema);
if (directHttp instanceof DelegatedProtocol) {
// unwrap the original
directHttp = ((DelegatedProtocol)directHttp).getOriginal();
assert directHttp instanceof DelegatedProtocol == false;
}
Protocol proxiedHttp = new DelegatedProtocol(socketFactory, directHttp, schema, defaultPort);
// NB: register the new protocol since when using absolute URIs, HttpClient#executeMethod will override the configuration (#387)
// NB: hence why the original/direct http protocol is saved - as otherwise the connection is not closed since it is considered different
// NB: (as the protocol identities don't match)
// this is not really needed since it's being replaced later on
// hostConfig.setHost(proxyHost, proxyPort, proxiedHttp);
Protocol.registerProtocol(schema, proxiedHttp);
// end dance
}
@Override
public Response execute(Request request) throws IOException {
HttpMethod http = null;
switch (request.method()) {
case DELETE:
http = new DeleteMethodWithBody();
break;
case HEAD:
http = new HeadMethod();
break;
case GET:
http = (request.body() == null ? new GetMethod() : new GetMethodWithBody());
break;
case POST:
http = new PostMethod();
break;
case PUT:
http = new PutMethod();
break;
default:
throw new EsHadoopTransportException("Unknown request method " + request.method());
}
CharSequence uri = request.uri();
if (StringUtils.hasText(uri)) {
if (String.valueOf(uri).contains("?")) {
throw new EsHadoopInvalidRequest("URI has query portion on it: [" + uri + "]");
}
http.setURI(new URI(escapeUri(uri.toString(), sslEnabled), false));
}
// NB: initialize the path _after_ the URI otherwise the path gets reset to /
// add node prefix (if specified)
String path = pathPrefix + addLeadingSlashIfNeeded(request.path().toString());
if (path.contains("?")) {
throw new EsHadoopInvalidRequest("Path has query portion on it: [" + path + "]");
}
path = HttpEncodingTools.encodePath(path);
http.setPath(path);
try {
// validate new URI
uri = http.getURI().toString();
} catch (URIException uriex) {
throw new EsHadoopTransportException("Invalid target URI " + request, uriex);
}
CharSequence params = request.params();
if (StringUtils.hasText(params)) {
http.setQueryString(params.toString());
}
ByteSequence ba = request.body();
if (ba != null && ba.length() > 0) {
if (!(http instanceof EntityEnclosingMethod)) {
throw new IllegalStateException(String.format("Method %s cannot contain body - implementation bug", request.method().name()));
}
EntityEnclosingMethod entityMethod = (EntityEnclosingMethod) http;
entityMethod.setRequestEntity(new BytesArrayRequestEntity(ba));
entityMethod.setContentChunked(false);
}
headers.applyTo(http);
// We don't want a token added from a proxy user to collide with the
// run_as mechanism from a real user impersonating said proxy, so
// make these conditions mutually exclusive.
if (runAsUser != null) {
if (log.isDebugEnabled()) {
log.debug("Performing request with runAs user set to ["+runAsUser+"]");
}
http.addRequestHeader("es-security-runas-user", runAsUser);
} else if (userProvider != null && userProvider.getUser().getEsToken(clusterName) != null) {
// If we are using token authentication, set the auth to be preemptive:
if (log.isDebugEnabled()) {
log.debug("Performing preemptive authentication with API Token");
}
http.getHostAuthState().setPreemptive();
http.getHostAuthState().setAuthAttempted(true);
http.getHostAuthState().setAuthScheme(new EsApiKeyAuthScheme());
if (isProxied && !isSecure) {
http.getProxyAuthState().setPreemptive();
http.getProxyAuthState().setAuthAttempted(true);
}
}
// Determine a user provider to use for executing, or if we even need one at all
UserProvider executingProvider;
if (proxyUserProvider != null) {
log.debug("Using proxyUserProvider to wrap rest request");
executingProvider = proxyUserProvider;
} else if (userProvider != null) {
log.debug("Using regular user provider to wrap rest request");
executingProvider = userProvider;
} else {
log.debug("Skipping user provider request wrapping");
executingProvider = null;
}
// when tracing, log everything
if (log.isTraceEnabled()) {
log.trace(String.format("Tx %s[%s]@[%s][%s]?[%s] w/ payload [%s]", proxyInfo, request.method().name(), httpInfo, request.path(), request.params(), request.body()));
}
if (executingProvider != null) {
final HttpMethod method = http;
executingProvider.getUser().doAs(new PrivilegedExceptionAction
