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[EWT-192] Add support for a limited set of custom HTTP headers (#204)
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29 changes: 29 additions & 0 deletions
29
src/main/java/com/truelayer/java/commonapi/CommonHandler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| package com.truelayer.java.commonapi; | ||
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| import static com.truelayer.java.http.mappers.HeadersMapper.toMap; | ||
| import static java.util.Collections.emptyMap; | ||
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| import com.truelayer.java.commonapi.entities.SubmitPaymentReturnParametersRequest; | ||
| import com.truelayer.java.commonapi.entities.SubmitPaymentReturnParametersResponse; | ||
| import com.truelayer.java.http.entities.ApiResponse; | ||
| import com.truelayer.java.http.entities.Headers; | ||
| import java.util.concurrent.CompletableFuture; | ||
| import lombok.Value; | ||
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| @Value | ||
| public class CommonHandler implements ICommonHandler { | ||
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| ICommonApi commonApi; | ||
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| @Override | ||
| public CompletableFuture<ApiResponse<SubmitPaymentReturnParametersResponse>> submitPaymentReturnParameters( | ||
| SubmitPaymentReturnParametersRequest request) { | ||
| return commonApi.submitPaymentReturnParameters(emptyMap(), request); | ||
| } | ||
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| @Override | ||
| public CompletableFuture<ApiResponse<SubmitPaymentReturnParametersResponse>> submitPaymentReturnParameters( | ||
| Headers headers, SubmitPaymentReturnParametersRequest request) { | ||
| return commonApi.submitPaymentReturnParameters(toMap(headers), request); | ||
| } | ||
| } |
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16 changes: 16 additions & 0 deletions
16
src/main/java/com/truelayer/java/commonapi/ICommonHandler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| package com.truelayer.java.commonapi; | ||
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| import com.truelayer.java.commonapi.entities.SubmitPaymentReturnParametersRequest; | ||
| import com.truelayer.java.commonapi.entities.SubmitPaymentReturnParametersResponse; | ||
| import com.truelayer.java.http.entities.ApiResponse; | ||
| import com.truelayer.java.http.entities.Headers; | ||
| import java.util.concurrent.CompletableFuture; | ||
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| public interface ICommonHandler { | ||
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| CompletableFuture<ApiResponse<SubmitPaymentReturnParametersResponse>> submitPaymentReturnParameters( | ||
| SubmitPaymentReturnParametersRequest request); | ||
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| CompletableFuture<ApiResponse<SubmitPaymentReturnParametersResponse>> submitPaymentReturnParameters( | ||
| Headers headers, SubmitPaymentReturnParametersRequest request); | ||
| } |
6 changes: 6 additions & 0 deletions
6
src/main/java/com/truelayer/java/entities/EmptyRequestBody.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| package com.truelayer.java.entities; | ||
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| import lombok.Value; | ||
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| @Value | ||
| public class EmptyRequestBody {} |
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18 changes: 0 additions & 18 deletions
18
src/main/java/com/truelayer/java/http/entities/Header.java
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21 changes: 21 additions & 0 deletions
21
src/main/java/com/truelayer/java/http/entities/Headers.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,21 @@ | ||
| package com.truelayer.java.http.entities; | ||
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| import lombok.Builder; | ||
| import lombok.EqualsAndHashCode; | ||
| import lombok.Getter; | ||
| import lombok.ToString; | ||
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| /** | ||
| * Class representing custom TL headers that we allow our users to set. | ||
| */ | ||
| @Builder | ||
| @Getter | ||
| @ToString | ||
| @EqualsAndHashCode | ||
| public class Headers { | ||
| private String idempotencyKey; | ||
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| private String signature; | ||
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| private String xForwardedFor; | ||
| } |
13 changes: 12 additions & 1 deletion
13
...terceptors/IdempotencyKeyInterceptor.java → ...s/IdempotencyKeyGeneratorInterceptor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,20 +1,31 @@ | ||
| package com.truelayer.java.http.interceptors; | ||
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| import static org.apache.commons.lang3.ObjectUtils.isEmpty; | ||
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| import com.truelayer.java.Constants; | ||
| import java.io.IOException; | ||
| import java.util.UUID; | ||
| import okhttp3.Interceptor; | ||
| import okhttp3.Request; | ||
| import okhttp3.Response; | ||
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| public class IdempotencyKeyInterceptor implements Interceptor { | ||
| public class IdempotencyKeyGeneratorInterceptor implements Interceptor { | ||
| @Override | ||
| public Response intercept(Chain chain) throws IOException { | ||
| Request request = chain.request(); | ||
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| if (!needsIdempotencyGeneration(request)) { | ||
| return chain.proceed(request); | ||
| } | ||
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| Request newRequest = request.newBuilder() | ||
| .header(Constants.HeaderNames.IDEMPOTENCY_KEY, UUID.randomUUID().toString()) | ||
| .build(); | ||
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| return chain.proceed(newRequest); | ||
| } | ||
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| private boolean needsIdempotencyGeneration(Request request) { | ||
| return isEmpty(request.header(Constants.HeaderNames.IDEMPOTENCY_KEY)); | ||
| } | ||
| } |
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