HTTPResponse.java

//
// *******************************************************************************
// * Copyright (C)2014, International Business Machines Corporation and *
// * others. All Rights Reserved. *
// *******************************************************************************
//
package com.ibm.streamsx.inet.http;

import java.io.IOException;
import java.io.InputStream;
import java.util.zip.GZIPInputStream;
import java.util.zip.Inflater;
import java.util.zip.InflaterInputStream;

import org.apache.http.HttpResponse;

class HTTPResponse {
	public static final int HTTP_OK = 200;
	
	private int responseCode = 0;
	private String errorStreamData = null, outStreamData =null;
	private HttpResponse resp = null;
	private boolean gotOutStream = false;
	public HTTPResponse(HttpResponse resp) {
		this.resp = resp;
		responseCode = resp.getStatusLine().getStatusCode();
		errorStreamData = resp.getStatusLine().getReasonPhrase();
	}

	public int getResponseCode() {
		return responseCode;
	}

	public String getErrorStreamData() {
		return errorStreamData;
	}
	
	public String getOutputData() throws IllegalStateException, IOException {
		if(!gotOutStream) {
			outStreamData = HTTPUtils.readFromStream(getInputStream());
			gotOutStream = true;
		}
		return outStreamData;
	}
	
	public InputStream getInputStream() throws IllegalStateException, IOException {
		if(resp == null || resp.getEntity() == null) return null;
		InputStream is = resp.getEntity().getContent();
		if(is == null) return null;
		
		String enc = null;
		
		if(resp.getEntity().getContentEncoding() != null)
			enc = resp.getEntity().getContentEncoding().getValue();
		
		if(enc!=null) { 
			String encLC = enc.toLowerCase();
			if(encLC.indexOf("gzip") != -1)
				return new GZIPInputStream(is);
			else if(encLC.indexOf("deflate") != -1)
				return new InflaterInputStream(is, new Inflater(true));
		}
		return is;
	}

	public String toString() {
		return "HTTPResponse RC[" + responseCode + "]: " + resp.toString();
	}
}