/**
* Creates the HttpMethod to use to call the remote server, either its GET or POST.
*
* @param exchange the exchange
* @return the created method as either GET or POST
* @throws CamelExchangeException is thrown if error creating RequestEntity
*/
@SuppressWarnings("deprecation")
protected HttpMethod createMethod(Exchange exchange) throws Exception {
// creating the url to use takes 2-steps
String url = HttpHelper.createURL(exchange, getEndpoint());
URI uri = HttpHelper.createURI(exchange, url, getEndpoint());
// get the url and query string from the uri
url = uri.toASCIIString();
String queryString = uri.getRawQuery();
// execute any custom url rewrite
String rewriteUrl = HttpHelper.urlRewrite(exchange, url, getEndpoint(), this);
if (rewriteUrl != null) {
// update url and query string from the rewritten url
url = rewriteUrl;
uri = new URI(url);
// use raw query to have uri decimal encoded which http client requires
queryString = uri.getRawQuery();
}
// remove query string as http client does not accept that
if (url.indexOf('?') != -1) {
url = url.substring(0, url.indexOf('?'));
}
// create http holder objects for the request
RequestEntity requestEntity = createRequestEntity(exchange);
HttpMethods methodToUse =
HttpHelper.createMethod(exchange, getEndpoint(), requestEntity != null);
HttpMethod method = methodToUse.createMethod(url);
if (queryString != null) {
// need to encode query string
queryString = UnsafeUriCharactersEncoder.encode(queryString);
method.setQueryString(queryString);
}
LOG.trace("Using URL: {} with method: {}", url, method);
if (methodToUse.isEntityEnclosing()) {
((EntityEnclosingMethod) method).setRequestEntity(requestEntity);
if (requestEntity != null && requestEntity.getContentType() == null) {
LOG.debug("No Content-Type provided for URL: {} with exchange: {}", url, exchange);
}
}
// there must be a host on the method
if (method.getHostConfiguration().getHost() == null) {
throw new IllegalArgumentException(
"Invalid uri: "
+ url
+ ". If you are forwarding/bridging http endpoints, then enable the bridgeEndpoint option on the endpoint: "
+ getEndpoint());
}
return method;
}
/** Handles the HTTP post. Throws HttpException on failure */
@SuppressWarnings("deprecation")
private void doPost(PostMethod method, RequestEntity data, String dest)
throws IOException, HttpException {
HttpMethodParams pars = method.getParams();
pars.setParameter(
HttpMethodParams.RETRY_HANDLER,
(Object)
new HttpMethodRetryHandler() {
public boolean retryMethod(HttpMethod m, IOException e, int exec) {
return !(e instanceof java.net.ConnectException)
&& (exec < MAX_RETRIES_PER_COLLECTOR);
}
});
method.setParams(pars);
method.setPath(dest);
// send it across the network
method.setRequestEntity(data);
log.info("HTTP post to " + dest + " length = " + data.getContentLength());
// Send POST request
client.setTimeout(8000);
int statusCode = client.executeMethod(method);
if (statusCode != HttpStatus.SC_OK) {
log.error(
"HTTP post response statusCode: "
+ statusCode
+ ", statusLine: "
+ method.getStatusLine());
// do something aggressive here
throw new HttpException("got back a failure from server");
}
// implicitly "else"
log.info(
"got success back from the remote collector; response length "
+ method.getResponseContentLength());
// FIXME: should parse acks here
InputStream rstream = null;
// Get the response body
byte[] resp_buf = method.getResponseBody();
rstream = new ByteArrayInputStream(resp_buf);
BufferedReader br = new BufferedReader(new InputStreamReader(rstream));
String line;
while ((line = br.readLine()) != null) {
System.out.println("response: " + line);
}
}
private String getRequestAsString(RequestEntity entity) throws Exception {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
entity.writeRequest(bos);
return new String(bos.toByteArray(), "UTF-8");
}