/**
* Sends a GET request and returns the response.
*
* @param endpoint The endpoint to send the request to.
* @param headers Any additional headers to send with this request. You can use {@link
* org.apache.http.HttpHeaders} constants for header names.
* @return A {@link Path} to the downloaded content, if any.
* @throws IOException If an error occurs.
* @see java.nio.file.Files#probeContentType(Path)
*/
public Response<Path> get(Endpoint endpoint, NameValuePair... headers) throws IOException {
// Create the request
HttpGet get = new HttpGet(endpoint.url());
get.setHeaders(combineHeaders(headers));
Path tempFile = null;
// Send the request and process the response
try (CloseableHttpResponse response = httpClient().execute(get)) {
if (response.getStatusLine().getStatusCode() != HttpStatus.OK_200) {
return null;
} // If bad response return null
// Request the content
HttpEntity entity = response.getEntity();
// Download the content to a temporary file
if (entity != null) {
tempFile = Files.createTempFile("download", "file");
try (InputStream input = entity.getContent();
OutputStream output = Files.newOutputStream(tempFile)) {
IOUtils.copy(input, output);
}
}
return new Response<>(response.getStatusLine(), tempFile);
}
}
/**
* Deserialises the given {@link CloseableHttpResponse} to the specified type.
*
* @param response The response.
* @return The response as a String, or null if the response does not contain an entity.
* @throws IOException If an error occurs.
*/
private String getResponseString(CloseableHttpResponse response) throws IOException {
String body = null;
HttpEntity entity = response.getEntity();
if (entity != null) {
try (InputStream inputStream = entity.getContent()) {
body = IOUtils.toString(inputStream);
}
} else {
EntityUtils.consume(entity);
}
return body;
}
private <T> T executeRequest(final HttpUriRequest request, final ResponseHandler<T> handler)
throws IOException {
final CloseableHttpClient client = createClientInstance();
try {
final CloseableHttpResponse response = client.execute(request);
// Wrap the response in a buffer to facilitate error handlers re-playing the content if the
// response
// size is smaller than the max allowable buffer
if (response.getEntity().getContentLength() >= 0
&& response.getEntity().getContentLength() < config.getMaxBufferSize()) {
EntityUtils.updateEntity(response, new BufferedHttpEntity(response.getEntity()));
}
// Explicit check for the authorization status of the API key
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_UNAUTHORIZED) {
throw new HyppoAuthException(config);
}
try {
log.debug(
"{} - {} : {}",
request.getMethod(),
request.getURI().getPath(),
response.getStatusLine().getStatusCode());
return handler.handleResponse(response);
} finally {
IOUtils.closeQuietly(response);
}
} catch (Exception e) {
log.error(
"{} - {} : FAILED - {}", request.getMethod(), request.getURI().getPath(), e.toString());
throw e;
} finally {
IOUtils.closeQuietly(client);
}
}
public void request1(String uri, int reqNum, int reqTerm) throws Exception {
CloseableHttpClient httpclient = HttpClients.createDefault();
if (reqNum == 0) {
System.out.println(
String.format("request to %s infinite times with term '%d' ms", uri, reqTerm));
} else {
System.out.println(
String.format("request to %s '%d' times with term '%d' ms", uri, reqNum, reqTerm));
}
int i = 0, tick = 0;
HttpGet httpGet = new HttpGet(uri);
CloseableHttpResponse response;
HttpEntity entity;
while (true) {
usleep(reqTerm);
tick = (int) (Math.random() * 10) % 2;
if (tick == 0) {
continue;
}
System.out.println("request " + httpGet.getURI());
response = httpclient.execute(httpGet);
System.out.println("--> response status = " + response.getStatusLine());
// response handler
try {
entity = response.getEntity();
EntityUtils.consume(entity);
} catch (Exception e) {
System.out.println(" --> http fail:" + e.getMessage());
} finally {
// Thread.sleep(5000); //테스트에만 썼다. close 지연시키려고.
response.close();
}
System.out.println("----------------------------------------");
if (reqNum != 0 && reqNum < ++i) {
break;
}
}
}
/**
* Deserialises the given {@link CloseableHttpResponse} to the specified type.
*
* @param response The response.
* @param responseClass The type to deserialise to.
* @param <T> The type to deserialise to.
* @return The deserialised response, or null if the response does not contain an entity.
* @throws IOException If an error occurs.
*/
private <T> T deserialiseResponseMessage(CloseableHttpResponse response, Class<T> responseClass)
throws IOException {
T body = null;
HttpEntity entity = response.getEntity();
if (entity != null) {
try (InputStream inputStream = entity.getContent()) {
try {
body = Serialiser.deserialise(inputStream, responseClass);
} catch (JsonSyntaxException e) {
// This can happen if an error HTTP code is received and the
// body of the response doesn't contain the expected object:
body = null;
}
}
} else {
EntityUtils.consume(entity);
}
return body;
}
