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com.spotinst.sdkjava.client.rest.RestClient Maven / Gradle / Ivy
package com.spotinst.sdkjava.client.rest;
import com.spotinst.sdkjava.client.http.GetRequestWithBody;
import com.spotinst.sdkjava.exception.SpotinstHttpException;
import com.spotinst.sdkjava.client.http.DeleteRequestWithBody;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.*;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.StringEntity;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Map;
/**
* Created by aharontwizer on 7/18/15.
*/
public class RestClient {
private static final Logger LOGGER = LoggerFactory.getLogger(RestClient.class);
public static RestResponse sendGet(
String url,
Map headers,
Map queryParams) throws SpotinstHttpException {
String encodedUrl = UrlEncoder.encode(url);
// Build the get request
HttpGet getRequest = new HttpGet(encodedUrl);
// Adding query params.
addQueryParams(getRequest, queryParams);
// Adding headers.
addHeaders(getRequest, headers);
// Sending the request.
return sendRequest(getRequest);
}
public static RestResponse sendGetWithBody(
String url,
String body,
Map headers,
Map queryParams) throws SpotinstHttpException {
String encodedUrl = UrlEncoder.encode(url);
// Build the get request
GetRequestWithBody getRequest = new GetRequestWithBody(encodedUrl);
// Build the request body
if (body != null) {
StringEntity entity = null;
try {
entity = new StringEntity(body);
} catch (UnsupportedEncodingException e) {
// TODO - Handle.
LOGGER.error("Exception when building get body", e);
}
getRequest.setEntity(entity);
}
// Adding query params.
addQueryParams(getRequest, queryParams);
// Adding headers.
addHeaders(getRequest, headers);
// Sending the request.
return sendRequest(getRequest);
}
public static RestResponse sendPut(
String url,
String body,
Map headers,
Map queryParams) throws SpotinstHttpException {
String encodedUrl = UrlEncoder.encode(url);
// Build the put request
HttpPut putRequest = new HttpPut(encodedUrl);
// Build the request body
if (body != null) {
StringEntity entity = null;
try {
entity = new StringEntity(body);
} catch (UnsupportedEncodingException e) {
// TODO - Handle.
LOGGER.error("Exception when building put body", e);
}
putRequest.setEntity(entity);
}
// Adding query params.
addQueryParams(putRequest, queryParams);
// Adding headers.
addHeaders(putRequest, headers);
// Sending the request.
return sendRequest(putRequest);
}
public static RestResponse sendPatch(
String url,
String body,
Map headers,
Map queryParams) throws SpotinstHttpException {
String encodedUrl = UrlEncoder.encode(url);
// Build the patch request
HttpPatch patchRequest = new HttpPatch(encodedUrl);
// Build the request body
if (body != null) {
StringEntity entity = null;
try {
entity = new StringEntity(body);
} catch (UnsupportedEncodingException e) {
// TODO - Handle.
LOGGER.error("Exception when building patch body", e);
}
patchRequest.setEntity(entity);
}
// Adding query params.
addQueryParams(patchRequest, queryParams);
// Adding headers.
addHeaders(patchRequest, headers);
// Sending the request.
return sendRequest(patchRequest);
}
public static RestResponse sendPost(
String url,
String body,
Map headers,
Map queryParams) throws SpotinstHttpException {
String encodedUrl = UrlEncoder.encode(url);
// Build the post request
HttpPost postRequest = new HttpPost(encodedUrl);
// Build the request body
if (body != null) {
StringEntity entity = null;
try {
entity = new StringEntity(body);
} catch (UnsupportedEncodingException e) {
// TODO - Handle.
LOGGER.error("Exception when building put body", e);
}
postRequest.setEntity(entity);
}
// Adding query params.
addQueryParams(postRequest, queryParams);
// Adding headers.
addHeaders(postRequest, headers);
// Sending the request.
return sendRequest(postRequest);
}
public static RestResponse sendDelete(
String url,
String body,
Map headers,
Map queryParams) throws SpotinstHttpException {
String encodedUrl = UrlEncoder.encode(url);
// Build the post request
DeleteRequestWithBody deleteRequest = new DeleteRequestWithBody(encodedUrl);
// Build the request body
if (body != null) {
StringEntity entity = null;
try {
entity = new StringEntity(body);
} catch (UnsupportedEncodingException e) {
// TODO - Handle.
LOGGER.error("Exception when building delete body", e);
}
deleteRequest.setEntity(entity);
}
// Adding query params.
addQueryParams(deleteRequest, queryParams);
// Adding headers.
addHeaders(deleteRequest, headers);
// Sending the request.
return sendRequest(deleteRequest);
}
private static RestResponse sendRequest(HttpUriRequest urlRequest) throws SpotinstHttpException {
RestResponse retVal;
// Get the client.
HttpClient httpclient;
if (urlRequest.getURI().toString().startsWith("https")) {
httpclient = SpotinstHttpContext.getInstance().getHttpsClient();
} else {
httpclient = SpotinstHttpContext.getInstance().getHttpClient();
}
CloseableHttpResponse response = null;
// Sending the request.
try {
LOGGER.debug("About to make HTTP call : " + urlRequest.toString());
response = (CloseableHttpResponse) httpclient.execute(urlRequest);
// Build the com.spotinst.sdkjava.client.rest response.
retVal = buildRestResponse(response);
} catch (IOException e) {
LOGGER.error("Exception when executing com.spotinst.sdkjava.client.http request", e);
throw new SpotinstHttpException("Exception in com.spotinst.sdkjava.client.http request", e);
} finally {
if (response != null) {
try {
response.close();
} catch (IOException e) {
LOGGER.error("Exception when closing com.spotinst.sdkjava.client.http response", e);
}
}
}
return retVal;
}
private static void addQueryParams(HttpRequestBase request, Map queryParams) {
// Adding query params.
if (queryParams != null) {
URIBuilder builder = new URIBuilder(request.getURI());
for (Map.Entry currEntry : queryParams.entrySet()) {
builder.addParameter(currEntry.getKey(), currEntry.getValue());
}
URI newUri = null;
try {
newUri = builder.build();
} catch (URISyntaxException e) {
// TODO - Handle.
LOGGER.error("Exception when building get url", e);
}
request.setURI(newUri);
}
}
private static void addHeaders(HttpRequestBase request, Map headers) {
// Adding headers.
if (headers != null) {
// Adding the headers
for (Map.Entry currEntry : headers.entrySet()) {
request.addHeader(currEntry.getKey(), currEntry.getValue());
}
}
// request.addHeader("Connection", "close");
}
private static RestResponse buildRestResponse(HttpResponse response) throws SpotinstHttpException {
RestResponse retVal;
BufferedReader rd;
try {
StringBuilder result = new StringBuilder();
if (response.getEntity() != null) {
rd = new BufferedReader(
new InputStreamReader(response.getEntity().getContent()));
String line;
while ((line = rd.readLine()) != null) {
result.append(line);
}
}
// Build the com.spotinst.sdkjava.client.rest response.
retVal = new RestResponse(response.getStatusLine().getStatusCode(), result.toString());
} catch (IOException e) {
LOGGER.error("Exception when when building Rest response.", e);
// TODO - Have constant for such error
retVal = new RestResponse(-1, e.toString());
throw new SpotinstHttpException("Exception when when building Rest response.", e);
}
return retVal;
}
}
