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package com.stripe.net;
import com.stripe.Stripe;
import com.stripe.exception.ApiConnectionException;
import com.stripe.exception.AuthenticationException;
import com.stripe.exception.StripeException;
import com.stripe.util.StringUtils;
import java.io.IOException;
import java.net.URL;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import lombok.AccessLevel;
import lombok.AllArgsConstructor;
import lombok.Value;
import lombok.experimental.Accessors;
/** A request to Stripe's API. */
@Value
@AllArgsConstructor(access = AccessLevel.PROTECTED)
@Accessors(fluent = true)
public class StripeRequest {
/** The HTTP method for the request (GET, POST or DELETE). */
ApiResource.RequestMethod method;
/**
* The URL for the request. If this is a GET or DELETE request, the URL also includes the request
* parameters in its query string.
*/
URL url;
/**
* The body of the request. For POST requests, this will be either a {@code
* application/x-www-form-urlencoded} or a {@code multipart/form-data} payload. For non-POST
* requests, this will be {@code null}.
*/
HttpContent content;
/**
* The HTTP headers of the request ({@code Authorization}, {@code Stripe-Version}, {@code
* Stripe-Account}, {@code Idempotency-Key}...).
*/
HttpHeaders headers;
/** The parameters of the request (as an unmodifiable map). */
Map params;
/** The special modifiers of the request. */
RequestOptions options;
/**
* Initializes a new instance of the {@link StripeRequest} class.
*
* @param method the HTTP method
* @param url the URL of the request
* @param content the body of the request
* @param params the parameters of the request
* @param options the special modifiers of the request
* @throws StripeException if the request cannot be initialized for any reason
*/
private StripeRequest(
ApiResource.RequestMethod method,
String url,
HttpContent content,
Map params,
RequestOptions options)
throws StripeException {
this.content = content;
this.params = (params != null) ? Collections.unmodifiableMap(params) : null;
this.options = (options != null) ? options : RequestOptions.getDefault();
this.method = method;
this.url = buildURL(method, url, params);
this.headers = buildHeaders(method, this.options);
}
/**
* Initializes a new instance of the {@link StripeRequest} class.
*
* @param method the HTTP method
* @param url the URL of the request
* @param params the parameters of the request
* @param options the special modifiers of the request
* @throws StripeException if the request cannot be initialized for any reason
*/
public StripeRequest(
ApiResource.RequestMethod method,
String url,
Map params,
RequestOptions options)
throws StripeException {
this(method, url, buildContent(method, params), params, options);
}
/**
* Initializes a new instance of the {@link StripeRequest} class.
*
* @param method the HTTP method
* @param url the URL of the request
* @param content the body of the request
* @param options the special modifiers of the request
* @throws StripeException if the request cannot be initialized for any reason
*/
public static StripeRequest createWithStringContent(
ApiResource.RequestMethod method,
String url,
String content,
RequestOptions options,
boolean json)
throws StripeException {
StripeRequest request =
new StripeRequest(method, url, buildContent(method, content, json), null, options);
return request;
}
/**
* Returns a new {@link StripeRequest} instance with an additional header.
*
* @param name the additional header's name
* @param value the additional header's value
* @return the new {@link StripeRequest} instance
*/
public StripeRequest withAdditionalHeader(String name, String value) {
return new StripeRequest(
this.method,
this.url,
this.content,
this.headers.withAdditionalHeader(name, value),
this.params,
this.options);
}
private static URL buildURL(
ApiResource.RequestMethod method, String spec, Map params)
throws ApiConnectionException {
StringBuilder sb = new StringBuilder();
sb.append(spec);
URL url = null;
try {
URL specUrl = new URL(spec);
String specQueryString = specUrl.getQuery();
if ((method != ApiResource.RequestMethod.POST) && (params != null)) {
String queryString = FormEncoder.createQueryString(params);
if (queryString != null && !queryString.isEmpty()) {
if (specQueryString != null && !specQueryString.isEmpty()) {
sb.append("&");
} else {
sb.append("?");
}
sb.append(queryString);
}
}
url = new URL(sb.toString());
} catch (IOException e) {
handleIOException(e);
}
return url;
}
private static HttpContent buildContent(
ApiResource.RequestMethod method, Map params) throws ApiConnectionException {
if (method != ApiResource.RequestMethod.POST) {
return null;
}
HttpContent httpContent = null;
try {
httpContent = FormEncoder.createHttpContent(params);
} catch (IOException e) {
handleIOException(e);
}
return httpContent;
}
private static HttpContent buildContent(
ApiResource.RequestMethod method, String content, boolean json)
throws ApiConnectionException {
if (method != ApiResource.RequestMethod.POST) {
return null;
}
if (json) {
return HttpContent.buildJsonContent(content);
}
HttpContent httpContent = null;
try {
httpContent = HttpContent.buildFormURLEncodedContent(content);
} catch (IOException e) {
handleIOException(e);
}
return httpContent;
}
private static void handleIOException(IOException e) throws ApiConnectionException {
throw new ApiConnectionException(
String.format(
"IOException during API request to Stripe (%s): %s "
+ "Please check your internet connection and try again. If this problem persists,"
+ "you should check Stripe's service status at https://twitter.com/stripestatus,"
+ " or let us know at [email protected].",
Stripe.getApiBase(), e.getMessage()),
e);
}
private static HttpHeaders buildHeaders(ApiResource.RequestMethod method, RequestOptions options)
throws AuthenticationException {
Map> headerMap = new HashMap>();
// Accept
headerMap.put("Accept", Arrays.asList("application/json"));
// Accept-Charset
headerMap.put("Accept-Charset", Arrays.asList(ApiResource.CHARSET.name()));
// Authorization
String apiKey = options.getApiKey();
if (apiKey == null) {
throw new AuthenticationException(
"No API key provided. Set your API key using `Stripe.apiKey = \"\"`. You can "
+ "generate API keys from the Stripe Dashboard. See "
+ "https://stripe.com/docs/api/authentication for details or contact support at "
+ "https://support.stripe.com/email if you have any questions.",
null,
null,
0);
} else if (apiKey.isEmpty()) {
throw new AuthenticationException(
"Your API key is invalid, as it is an empty string. You can double-check your API key "
+ "from the Stripe Dashboard. See "
+ "https://stripe.com/docs/api/authentication for details or contact support at "
+ "https://support.stripe.com/email if you have any questions.",
null,
null,
0);
} else if (StringUtils.containsWhitespace(apiKey)) {
throw new AuthenticationException(
"Your API key is invalid, as it contains whitespace. You can double-check your API key "
+ "from the Stripe Dashboard. See "
+ "https://stripe.com/docs/api/authentication for details or contact support at "
+ "https://support.stripe.com/email if you have any questions.",
null,
null,
0);
}
headerMap.put("Authorization", Arrays.asList(String.format("Bearer %s", apiKey)));
// Stripe-Version
if (RequestOptions.unsafeGetStripeVersionOverride(options) != null) {
headerMap.put(
"Stripe-Version", Arrays.asList(RequestOptions.unsafeGetStripeVersionOverride(options)));
} else if (options.getStripeVersion() != null) {
headerMap.put("Stripe-Version", Arrays.asList(options.getStripeVersion()));
} else {
throw new IllegalStateException(
"Either `stripeVersion` or `stripeVersionOverride` value must be set.");
}
// Stripe-Account
if (options.getStripeAccount() != null) {
headerMap.put("Stripe-Account", Arrays.asList(options.getStripeAccount()));
}
// Idempotency-Key
if (options.getIdempotencyKey() != null) {
headerMap.put("Idempotency-Key", Arrays.asList(options.getIdempotencyKey()));
} else if (method == ApiResource.RequestMethod.POST) {
headerMap.put("Idempotency-Key", Arrays.asList(UUID.randomUUID().toString()));
}
return HttpHeaders.of(headerMap);
}
}
