Create stripe api endpoint for apple pay donations

service/src/main/java/org/whispersystems/textsecuregcm/configuration/DonationConfiguration.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2021 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.whispersystems.textsecuregcm.configuration;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.google.common.annotations.VisibleForTesting;
+import java.util.Set;
+import javax.validation.Valid;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+
+public class DonationConfiguration {
+
+  private String uri;
+  private String apiKey;
+  private Set<String> supportedCurrencies;
+  private CircuitBreakerConfiguration circuitBreaker;
+  private RetryConfiguration retry;
+
+  @JsonProperty
+  @NotEmpty
+  public String getUri() {
+    return uri;
+  }
+
+  @VisibleForTesting
+  public void setUri(final String uri) {
+    this.uri = uri;
+  }
+
+  @JsonProperty
+  @NotEmpty
+  public String getApiKey() {
+    return apiKey;
+  }
+
+  @VisibleForTesting
+  public void setApiKey(final String apiKey) {
+    this.apiKey = apiKey;
+  }
+
+  @JsonProperty
+  @NotEmpty
+  public Set<String> getSupportedCurrencies() {
+    return supportedCurrencies;
+  }
+
+  @VisibleForTesting
+  public void setSupportedCurrencies(final Set<String> supportedCurrencies) {
+    this.supportedCurrencies = supportedCurrencies;
+  }
+
+  @JsonProperty
+  @NotNull
+  @Valid
+  public CircuitBreakerConfiguration getCircuitBreaker() {
+    return circuitBreaker;
+  }
+
+  @VisibleForTesting
+  public void setCircuitBreaker(final CircuitBreakerConfiguration circuitBreaker) {
+    this.circuitBreaker = circuitBreaker;
+  }
+
+  @JsonProperty
+  @NotNull
+  @Valid
+  public RetryConfiguration getRetry() {
+    return retry;
+  }
+
+  @VisibleForTesting
+  public void setRetry(final RetryConfiguration retry) {
+    this.retry = retry;
+  }
+}