com.cloudesire.tisana4j.RestClient Maven / Gradle / Ivy
package com.cloudesire.tisana4j;
import com.cloudesire.tisana4j.ExceptionTranslator.ResponseMessage;
import com.cloudesire.tisana4j.exceptions.BadRequestException;
import com.cloudesire.tisana4j.exceptions.DefaultExceptionTranslator;
import com.cloudesire.tisana4j.exceptions.ExceptionFactory;
import com.cloudesire.tisana4j.exceptions.ParseException;
import com.cloudesire.tisana4j.exceptions.RestException;
import com.cloudesire.tisana4j.exceptions.RuntimeRestException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectWriter;
import org.apache.commons.io.IOUtils;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.auth.AuthenticationException;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpHead;
import org.apache.http.client.methods.HttpOptions;
import org.apache.http.client.methods.HttpPatch;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.utils.DateUtils;
import org.apache.http.config.SocketConfig;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.InputStreamBody;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.ssl.TrustStrategy;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.net.ssl.SSLContext;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
public class RestClient implements RestClientInterface
{
private static final Logger log = LoggerFactory.getLogger( RestClient.class );
private static final Object jaxbGuard = new Object();
private final String username;
private final String password;
private ObjectMapper mapper = new ObjectMapper();
private final boolean skipValidation;
private int CONNECTION_TIMEOUT = 60000 * 2;
private int SOCKET_TIMEOUT = 60000 * 2;
private boolean authenticated;
private boolean useXml = false;
private ExceptionTranslator exceptionTranslator = new DefaultExceptionTranslator();
private boolean skipContentCompression = false;
private Map headers;
private Map> responseHeaders;
private SSLContext ctx;
private HttpClient httpClient;
private String proxyHostname;
private int proxyPort = 8080;
private String proxyScheme = "http";
private int httpClientMaxConnPerRoute = 2;
private int httpClientMaxConnTotal = 20;
/**
* Default settings: no authentication and verify if server certificate is
* valid. Uses json. For use xml setUseXml() to true.
*/
public RestClient()
{
this( null, null, false, null );
}
/**
* @param skipValidation if true skips server certificate validation for Https
* connections
*/
public RestClient( boolean skipValidation )
{
this( null, null, skipValidation, null );
}
/**
* @param username user for authentication
* @param password password for authentication
* @param skipValidation if true skips server certificate validation for Https
* connections
*/
public RestClient( String username, String password, boolean skipValidation )
{
this( username, password, skipValidation, null );
}
/**
* @param username user for authentication
* @param password password for authentication
* @param skipValidation if true skips server certificate validation for Https
* connections
* @param headers connection properties that will be added by default to any
* connection
*/
public RestClient( String username, String password, boolean skipValidation, Map headers )
{
this( username, password, skipValidation, headers, null );
}
/**
* @param username user for authentication
* @param password password for authentication
* @param skipValidation if true skips server certificate validation for Https
* connections
* @param headers connection properties that will be added by default to any
* connection
* @param ctx ssl context
*/
public RestClient( String username, String password, boolean skipValidation, Map headers,
SSLContext ctx )
{
this( username, password, skipValidation, headers, ctx, null, null );
}
/**
* @param username user for authentication
* @param password password for authentication
* @param skipValidation if true skips server certificate validation for Https
* connections
* @param headers connection properties that will be added by default to any
* connection
* @param ctx ssl context
* @param connectionTimeOut connection timeout Milliseconds - default 2 minutes
* @param socketTimeOut socket timeout Milliseconds - default 2 minutes
*/
public RestClient( String username, String password, boolean skipValidation, Map headers,
SSLContext ctx, Integer connectionTimeOut, Integer socketTimeOut )
{
super();
this.username = username;
this.password = password;
this.skipValidation = skipValidation;
authenticated = username != null;
this.headers = headers;
this.ctx = ctx;
if ( connectionTimeOut != null ) this.CONNECTION_TIMEOUT = connectionTimeOut;
if ( socketTimeOut != null ) this.SOCKET_TIMEOUT = socketTimeOut;
}
public RestClient( RestClientBuilder builder )
{
this( builder.getUsername(), builder.getPassword(), builder.getSkipValidation(), builder.getHeaders(),
null, builder.getConnectionTimeout(), builder.getSocketTimeout() );
this.proxyHostname = builder.getProxyHostname();
this.proxyPort = builder.getProxyPort();
this.proxyScheme = builder.getProxyScheme();
}
// wrap newInstance to avoid http://bugs.java.com/bugdatabase/view_bug.do?bug_id=7122142
private static JAXBContext getJaxbContext( Class clazz ) throws JAXBException
{
synchronized ( jaxbGuard )
{
return JAXBContext.newInstance( clazz );
}
}
@Override
public void toggleAuthentication()
{
authenticated = !authenticated;
}
@Override
public String getUsername()
{
return username;
}
@Override
public void delete( URL url ) throws RestException
{
delete( url, null );
}
private Map> parseResponseHeaders( HttpResponse response )
{
responseHeaders = new HashMap<>();
if ( response.getAllHeaders().length != 0 )
{
for ( Header header : response.getAllHeaders() )
{
String name = header.getName();
String value = header.getValue();
if ( responseHeaders.containsKey( name ) ) responseHeaders.get( name ).add( value );
else
{
List x = new LinkedList<>();
x.add( value );
responseHeaders.put( name, x );
}
}
}
return responseHeaders;
}
@Override
public void delete( URL url, Map newHeaders ) throws RestException
{
HttpDelete delete;
try
{
delete = new HttpDelete( url.toURI() );
}
catch ( URISyntaxException e )
{
throw new RuntimeRestException( e );
}
prepareRequest( delete, newHeaders );
HttpResponse response = execute( delete );
parseResponseHeaders( response );
EntityUtils.consumeQuietly( response.getEntity() );
}
@Override
public T get( URL url, Class clazz ) throws RestException
{
return get( url, clazz, null );
}
@Override
public T get( URL url, TypeReference typeReference ) throws RestException, RuntimeRestException
{
return get( url, typeReference, null );
}
@Override
public T get( URL url, Class clazz, Map newHeaders )
throws RestException
{
try
{
HttpResponse response = getInternal( url, newHeaders );
return readObject( clazz, response );
}
catch ( ParseException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public T get( URL url, TypeReference typeReference, Map newHeaders )
throws RestException, RuntimeRestException
{
try
{
HttpResponse response = getInternal( url, newHeaders );
return readJsonObject( typeReference, response );
}
catch ( ParseException e )
{
throw new RuntimeRestException( e );
}
}
private HttpResponse getInternal( URL url, Map headers ) throws RestException
{
try
{
HttpGet get = new HttpGet( url.toURI() );
prepareRequest( get, headers );
return execute( get );
}
catch ( URISyntaxException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public InputStream get( URL url ) throws RestException
{
try
{
return getInternal( url, new HashMap() ).getEntity().getContent();
}
catch ( IOException e )
{
throw new RestException( e );
}
}
@Override
public InputStream get( URL url, Map headers )
throws RestException
{
try
{
return getInternal( url, headers ).getEntity().getContent();
}
catch ( IOException e )
{
throw new RestException( e );
}
}
@Override
public List getCollection( URL url, Class clazz ) throws RestException
{
return getCollection( url, clazz, null );
}
@Override
public List getCollection( URL url, Class clazz, Map newHeaders )
throws RestException
{
try
{
HttpGet get = new HttpGet( url.toURI() );
prepareRequest( get, newHeaders );
HttpResponse response = execute( get );
parseResponseHeaders( response );
try ( InputStream stream = response.getEntity().getContent() )
{
return mapper.reader( mapper.getTypeFactory().constructCollectionType( List.class, clazz ) )
.readValue( stream );
}
}
catch ( IOException | URISyntaxException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public Map head( URL url ) throws RuntimeRestException, RestException
{
return head( url, null );
}
@Override
public Map head( URL url, Map newHeaders )
throws RestException
{
try
{
HttpHead head = new HttpHead( url.toURI() );
prepareRequest( head, newHeaders );
HttpResponse response = execute( head );
EntityUtils.consumeQuietly( response.getEntity() );
Map headers = new HashMap<>();
Header[] allHeaders = response.getAllHeaders();
if ( allHeaders == null ) return headers;
for ( Header allHeader : allHeaders )
headers.put( allHeader.getName(), allHeader.getValue() );
return headers;
}
catch ( URISyntaxException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public String[] options( URL url ) throws RestException
{
return options( url, null );
}
@Override
public String[] options( URL url, Map newHeaders ) throws RestException
{
HttpOptions options;
try
{
options = new HttpOptions( url.toURI() );
}
catch ( URISyntaxException e )
{
throw new RuntimeRestException( e );
}
prepareRequest( options, newHeaders );
HttpResponse response = execute( options );
EntityUtils.consumeQuietly( response.getEntity() );
String allow = null;
Header[] allHeaders = response.getAllHeaders();
for ( Header allHeader : allHeaders )
if ( Objects.equals( allHeader.getName(), "Allow" ) ) allow = allHeader.getValue();
if ( allow == null ) throw new BadRequestException( 404, "Method options not supported." );
return allow.split( "," );
}
@Override
public T patchEntity( URL url, Map paramMap, Class clazz )
throws RestException
{
return patchEntity( url, paramMap, clazz, null );
}
@Override
public T patchEntityO( URL url, Map paramMap, Class clazz )
throws RestException
{
return patchEntityO( url, paramMap, clazz, null );
}
@Override
public T patchEntity( URL url, Map paramMap, Class clazz, Map newHeaders )
throws RestException
{
return patchEntityO( url, paramMap != null ? new HashMap( paramMap ) : null, clazz,
newHeaders );
}
@Override
public T patchEntityO( URL url, Map paramMap, Class clazz, Map newHeaders )
throws RestException
{
try
{
HttpPatch patch = new HttpPatch( url.toURI() );
prepareRequest( patch, newHeaders );
writeObject( paramMap, patch );
return readObject( clazz, execute( patch ) );
}
catch ( URISyntaxException | ParseException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public void patch( URL url, Object object ) throws RestException
{
patch( url, object, null );
}
@Override
public void patch( URL url, Object object, Map newHeaders ) throws RestException
{
try
{
HttpPatch patch = new HttpPatch( url.toURI() );
prepareRequest( patch, newHeaders );
writeObject( object, patch );
HttpResponse response = execute( patch );
parseResponseHeaders( response );
EntityUtils.consumeQuietly( response.getEntity() );
}
catch ( URISyntaxException | ParseException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public void patchO( URL url, Map paramMap ) throws RestException
{
patch( url, paramMap, null );
}
@Override
public void patchO( URL url, Map paramMap, Map newHeaders ) throws RestException
{
patch( url, paramMap, newHeaders );
}
@Override
public T post( URL url, T obj ) throws RestException
{
return post( url, obj, null );
}
@Override
@SuppressWarnings ( "unchecked" )
public T post( URL url, T obj, Map newHeaders ) throws RestException
{
return (T) post( url, obj, newHeaders, obj.getClass() );
}
@Override
public R post( URL url, T obj, Map newHeaders, Class responseClass )
throws RestException
{
try
{
HttpPost post = new HttpPost( url.toURI() );
prepareRequest( post, newHeaders );
writeObject( obj, post );
HttpResponse response = execute( post );
if ( response.getEntity() == null )
{
parseResponseHeaders( response );
return null;
}
if ( responseClass == null )
{
parseResponseHeaders( response );
EntityUtils.consumeQuietly( response.getEntity() );
return null;
}
return readObject( responseClass, response );
}
catch ( URISyntaxException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public T postData( URL url, String filename, InputStream content, Class responseClass )
throws RestException
{
return postData( url, filename, content, responseClass, null );
}
@Override
public T postData( URL url, String filename, InputStream content, Class responseClass,
Map newHeaders ) throws RestException
{
try
{
HttpPost post = new HttpPost( url.toURI() );
prepareRequest( post, newHeaders );
InputStreamBody body = new InputStreamBody( content, filename );
HttpEntity entity = MultipartEntityBuilder.create()
.addPart( "file", body )
.build();
post.setEntity( entity );
HttpResponse response = execute( post );
if ( responseClass == null || response.getEntity() == null )
{
parseResponseHeaders( response );
EntityUtils.consumeQuietly( response.getEntity() );
return null;
}
return readObject( responseClass, response );
}
catch ( URISyntaxException | ParseException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public T postFormData( URL url, List pairs, Class responseClass )
throws RestException
{
try
{
HttpPost post = new HttpPost( url.toURI() );
prepareRequest( post, null );
List formData = new ArrayList<>();
for ( Pair pair: pairs )
{
formData.add( new BasicNameValuePair( pair.getKey(), pair.getValue() ) );
}
UrlEncodedFormEntity entity = new UrlEncodedFormEntity( formData, "UTF-8" );
post.setEntity( entity );
HttpResponse response = execute( post );
if ( responseClass == null || response.getEntity() == null )
{
parseResponseHeaders( response );
EntityUtils.consumeQuietly( response.getEntity() );
return null;
}
return readObject( responseClass, response );
}
catch ( URISyntaxException | UnsupportedEncodingException | ParseException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public T put( URL url, T obj ) throws RestException
{
return put( url, obj, null );
}
@SuppressWarnings ( "unchecked" )
@Override
public T put( URL url, T obj, Map newHeaders ) throws RestException
{
return (T) put( url, obj, newHeaders, obj.getClass() );
}
@Override
public R put( URL url, T obj, Map newHeaders, Class responseClass )
throws RestException
{
try
{
HttpPut put = new HttpPut( url.toURI() );
prepareRequest( put, newHeaders );
writeObject( obj, put );
HttpResponse response = execute( put );
if ( response.getEntity() == null )
{
parseResponseHeaders( response );
return null;
}
return readObject( responseClass, response );
}
catch ( URISyntaxException | ParseException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public void setExceptionTranslator( ExceptionTranslator exceptionTranslator )
{
this.exceptionTranslator = exceptionTranslator;
}
@Override
public Map getHeaders()
{
return this.headers;
}
@Override
public void setHeaders( Map headers )
{
this.headers = headers;
}
@Override
public void setUseXml( boolean useXml )
{
this.useXml = useXml;
}
private void applyHeaders( HttpRequest request, Map newHeaders )
{
Map mergedHeaders = new HashMap<>();
if ( headers != null ) mergedHeaders.putAll( headers );
if ( newHeaders != null ) mergedHeaders.putAll( newHeaders );
for ( String k : mergedHeaders.keySet() )
request.addHeader( k, mergedHeaders.get( k ) );
}
private void checkError( HttpResponse response ) throws RestException
{
int responseCode = response.getStatusLine().getStatusCode();
if ( responseCode < 200 || responseCode >= 300 )
{
try ( InputStream stream = response.getEntity().getContent() )
{
ContentType type = ContentType.getOrDefault( response.getEntity() );
String charset = type.getCharset() != null ? type.getCharset().name() : "UTF-8";
String errorStream = IOUtils.toString( stream, charset );
ResponseMessage responseMessage = new ResponseMessage();
RestException translatedException = exceptionTranslator
.translateException( responseCode, response.getStatusLine().getReasonPhrase(), errorStream,
responseMessage, response.getAllHeaders() );
if ( translatedException != null ) throw translatedException;
throw getDefaultException( responseCode, response.getStatusLine().getReasonPhrase(),
responseMessage.getResponse() != null ? responseMessage.getResponse() : errorStream );
}
catch ( IllegalStateException | IOException e )
{
throw new RestException( responseCode, e.getMessage() );
}
}
}
private RestException getDefaultException( int responseCode, String reasonPhrase, String responseMessage )
{
return ExceptionFactory.getException( responseCode, reasonPhrase, responseMessage );
}
/**
* Internal execute, log headers, check for errors
*
* @param request The request object to be executed
*
* @return HttpResponse Response replied by the server
*
* @throws RestException
*/
private HttpResponse execute( HttpUriRequest request ) throws RestException
{
log.debug( ">>>> " + request.getRequestLine() );
for ( Header header : request.getAllHeaders() )
{
log.trace( ">>>> " + header.getName() + ": " + header.getValue() );
}
HttpResponse response;
try
{
response = getHttpClient().execute( request );
log.debug( "<<<< " + response.getStatusLine() );
for ( Header header : response.getAllHeaders() )
{
log.trace( "<<<< " + header.getName() + ": " + header.getValue() );
}
if ( response.getStatusLine().getStatusCode() == 204 )
{
log.debug( "Consuming quietly the response entity since server returned no content" );
EntityUtils.consumeQuietly( response.getEntity() );
}
checkError( response );
return response;
}
catch ( KeyManagementException | NoSuchAlgorithmException | IOException e )
{
throw new RuntimeRestException( e );
}
finally
{
// https://issues.apache.org/jira/browse/HTTPCLIENT-1523
DateUtils.clearThreadLocal();
}
}
private synchronized HttpClient getHttpClient() throws KeyManagementException, NoSuchAlgorithmException
{
if ( httpClient == null )
{
HttpClientBuilder httpClientBuilder = HttpClients.custom()
.setMaxConnPerRoute( httpClientMaxConnPerRoute )
.setMaxConnTotal( httpClientMaxConnTotal );
final RequestConfig.Builder requestConfigBuilder = RequestConfig.custom()
.setConnectionRequestTimeout( CONNECTION_TIMEOUT )
.setSocketTimeout( SOCKET_TIMEOUT );
if ( proxyHostname != null )
{
HttpHost proxy = new HttpHost( proxyHostname, proxyPort, proxyScheme );
requestConfigBuilder.setProxy( proxy );
}
else if ( System.getProperty( "http.proxyHost" ) != null )
{
if ( System.getProperty( "http.proxyPort" ) != null )
{
proxyPort = Integer.valueOf( System.getProperty( "http.proxyPort" ) );
}
HttpHost proxy = new HttpHost( System.getProperty( "http.proxyHost" ), proxyPort, proxyScheme );
requestConfigBuilder.setProxy( proxy );
}
RequestConfig requestConfig = requestConfigBuilder.build();
SocketConfig socketConfig = SocketConfig.custom().setSoKeepAlive( true ).setSoTimeout( SOCKET_TIMEOUT )
.build();
httpClientBuilder.setDefaultRequestConfig( requestConfig ).setDefaultSocketConfig( socketConfig );
if ( skipContentCompression ) httpClientBuilder.disableContentCompression();
if ( skipValidation || ctx != null )
{
try
{
if ( ctx != null )
{
httpClientBuilder.setSslcontext( ctx );
}
else
{
SSLContext sslContext = SSLContextBuilder.create().loadTrustMaterial( new TrustStrategy()
{
@Override
public boolean isTrusted( X509Certificate[] chain, String authType )
throws CertificateException
{
return true;
}
} ).build();
httpClientBuilder.setSslcontext( sslContext );
}
httpClientBuilder.setSSLHostnameVerifier( NoopHostnameVerifier.INSTANCE );
}
catch ( KeyStoreException e )
{
log.warn( "Cannot setup skipValidation", e );
}
}
httpClient = httpClientBuilder.build();
}
return httpClient;
}
private T readObject( Class clazz, HttpResponse response )
{
parseResponseHeaders( response );
if ( response.getEntity() == null ) return null;
if ( clazz.isAssignableFrom( InputStream.class ) )
{
try
{
return (T) response.getEntity().getContent();
}
catch ( IOException ex )
{
throw new RuntimeRestException( ex );
}
}
Header contentType = response.getEntity().getContentType();
if ( contentType != null )
{
if ( contentType.getValue().contains( ContentType.APPLICATION_JSON.getMimeType() ) )
return parseJson( clazz, response );
if ( contentType.getValue().toLowerCase().contains( "xml" ) ) return parseXml( clazz, response );
if ( contentType.getValue().contains( ContentType.TEXT_PLAIN.getMimeType() ) ) try
{
return (T) IOUtils.toString( response.getEntity().getContent() );
}
catch ( IOException e )
{
throw new RuntimeRestException( e );
}
}
throw new ParseException(
"Unsupported content type " + ( contentType != null ? contentType.getValue() : "null" ) );
}
private T readJsonObject( TypeReference typeReference, HttpResponse response ) throws RuntimeRestException
{
Header contentType = response.getEntity().getContentType();
if ( contentType != null )
{
if ( contentType.getValue().contains( ContentType.APPLICATION_JSON.getMimeType() ) )
return parseJson( typeReference, response );
}
throw new ParseException(
"Unsupported content type " + ( contentType != null ? contentType.getValue() : "null" ) );
}
private T parseJson( Class clazz, HttpResponse response )
{
return internalParseJson( clazz, response );
}
private T parseJson( TypeReference typeReference, HttpResponse response ) throws RuntimeRestException
{
return internalParseJson( typeReference, response );
}
@SuppressWarnings("unchecked")
private T internalParseJson( Object parameter, HttpResponse response ) throws RuntimeRestException
{
try ( InputStream stream = response.getEntity().getContent() )
{
if ( parameter instanceof Class)
{
Class clazz = (Class) parameter;
return mapper.reader( clazz ).readValue( stream );
}
if ( parameter instanceof TypeReference)
{
TypeReference clazz = (TypeReference) parameter;
return mapper.reader( clazz ).readValue( stream );
}
throw new IllegalArgumentException( "First parameter should be a Class or a TypeReference" );
}
catch ( JsonProcessingException e )
{
throw new ParseException( e );
}
catch ( IllegalStateException | IOException e )
{
throw new RuntimeRestException( e );
}
}
private T parseXml( Class clazz, HttpResponse response )
{
try ( InputStream stream = response.getEntity().getContent() )
{
JAXBContext contextB = getJaxbContext( clazz );
Unmarshaller unmarshallerB = contextB.createUnmarshaller();
try
{
return (T) unmarshallerB.unmarshal( stream );
}
catch ( JAXBException e )
{
throw new ParseException( e );
}
}
catch ( IllegalStateException | IOException | JAXBException e )
{
throw new RuntimeRestException( e );
}
}
private void prepareRequest( HttpRequest request, Map newHeaders )
{
applyHeaders( request, newHeaders );
if ( authenticated )
{
UsernamePasswordCredentials credentials = new UsernamePasswordCredentials( username, password );
try
{
request.addHeader( new BasicScheme().authenticate( credentials, request, null ) );
}
catch ( AuthenticationException e )
{
log.warn( "it should not happens", e );
}
}
}
private void writeObject( T obj, HttpEntityEnclosingRequest request ) throws ParseException
{
if ( obj == null ) return;
String payload = useXml ? serializeXMLContent( obj, request ) : serializeJsonContent( obj, request );
HttpRequestBase httpRequest = (HttpRequestBase) request;
log.debug( "{} payload: {}", httpRequest.getMethod(), payload );
}
private String serializeJsonContent( T obj, HttpEntityEnclosingRequest request ) throws ParseException
{
try
{
request.addHeader( "Content-type", "application/json" );
ObjectWriter writer = mapper.writer();
String payload = writer.writeValueAsString( obj );
StringEntity entity = new StringEntity( payload, ContentType.APPLICATION_JSON );
request.setEntity( entity );
return payload;
}
catch ( JsonProcessingException e )
{
throw new ParseException( e );
}
}
private String serializeXMLContent( T obj, HttpEntityEnclosingRequest request )
{
request.addHeader( "Content-type", "application/xml" );
ByteArrayOutputStream baos = new ByteArrayOutputStream();
JAXBContext context;
try
{
context = JAXBContext.newInstance( obj.getClass() );
Marshaller m = context.createMarshaller();
m.marshal( obj, baos );
String payload = baos.toString();
StringEntity entity = new StringEntity( payload, ContentType.APPLICATION_XML );
request.setEntity( entity );
return payload;
}
catch ( JAXBException e )
{
throw new ParseException( e );
}
}
@Override
public InputStream getData( URL url, Map newHeaders ) throws RestException
{
try
{
HttpGet get;
get = new HttpGet( url.toURI() );
prepareRequest( get, newHeaders );
HttpResponse response = execute( get );
return response.getEntity().getContent();
}
catch ( URISyntaxException | IllegalStateException | IOException e )
{
throw new RuntimeRestException( e );
}
}
@Override
public Map> getLastResponseHeaders()
{
return responseHeaders;
}
/**
* Use to disable content compression
* @param disableContentCompression true if content compression should be disabled
*/
@Override
public void setHttpContentCompressionOverride( boolean disableContentCompression )
{
settingsAlreadyInitializedCheck();
this.skipContentCompression = disableContentCompression;
}
/**
* Change failure behaviour in deserialization if an unknown field is found
* @param flag if true fail, if false ignore unknown field
*/
@Override
public void setObjectMapperFailOnUknownField( boolean flag )
{
this.mapper.configure( DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, flag );
}
/**
* Enable proxy support
* @param proxyHostname proxy hostname
*/
@Override
public void setProxyHostname( String proxyHostname )
{
settingsAlreadyInitializedCheck();
this.proxyHostname = proxyHostname;
}
/**
* Change port of proxy
* @param proxyPort the port number of the proxy server
*/
@Override
public void setProxyPort( int proxyPort )
{
settingsAlreadyInitializedCheck();
this.proxyPort = proxyPort;
}
/**
* Proxy protocol (default "http")
* @param proxyScheme http or https
*/
@Override
public void setProxyScheme( String proxyScheme )
{
settingsAlreadyInitializedCheck();
this.proxyScheme = proxyScheme;
}
@Override
public void setHttpClientMaxConnectionsPerRoute( int httpClientMaxConnPerRoute )
{
settingsAlreadyInitializedCheck();
this.httpClientMaxConnPerRoute = httpClientMaxConnPerRoute;
}
@Override
public void setHttpClientMaxConnTotal( int httpClientMaxConnTotal )
{
settingsAlreadyInitializedCheck();
this.httpClientMaxConnTotal = httpClientMaxConnTotal;
}
@Deprecated
@Override
public ObjectMapper getObjectMapper()
{
return mapper;
}
@Override
public void setObjectMapper( ObjectMapper mapper )
{
this.mapper = mapper;
}
private void settingsAlreadyInitializedCheck()
{
if ( httpClient != null )
throw new IllegalArgumentException( "httpClient already initialized, too late to change behaviour" );
}
}
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