package feign;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Expands headers supplied in the {@code value}. Variables to the the right of the colon are expanded. <br>
* <pre>
* @Headers("Content-Type: application/xml")
* interface SoapApi {
* ...
* @RequestLine("GET /")
* @Headers("Cache-Control: max-age=640000")
* ...
*
* @RequestLine("POST /")
* @Headers({
* "X-Foo: Bar",
* "X-Ping: {token}"
* }) void post(@Param("token") String token);
* ...
* </pre>
* <br> <strong>Notes:</strong>
* <ul>
* <li>If you'd like curly braces literally in the header, urlencode them first.</li>
* <li>Headers do not overwrite each other. All headers with the same name will be included
* in the request.</li>
* </ul>
* <br><b>Relationship to JAXRS</b><br> <br> The following two forms are identical. <br><br> Feign:
* <pre>
* @RequestLine("POST /")
* @Headers({
* "X-Ping: {token}"
* }) void post(@Named("token") String token);
* ...
* </pre>
* <br> JAX-RS:
* <pre>
* @POST @Path("/")
* void post(@HeaderParam("X-Ping") String token);
* ...
* </pre>
*/
@Target({METHOD, TYPE})
@Retention(RUNTIME)
public @interface Headers {
String[] value();
}