Add tools to decline messages from senders meeting specific conditions

service/src/main/java/org/whispersystems/textsecuregcm/configuration/dynamic/DynamicMessageRateConfiguration.java

@@ -7,6 +7,7 @@ package org.whispersystems.textsecuregcm.configuration.dynamic;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.time.Duration;
 import java.util.Collections;
 import java.util.Set;
 
@@ -18,6 +19,24 @@ public class DynamicMessageRateConfiguration {
   @JsonProperty
   private Set<String> rateLimitedCountryCodes = Collections.emptySet();
 
+  @JsonProperty
+  private Set<String> rateLimitedHosts = Collections.emptySet();
+
+  @JsonProperty
+  private Duration responseDelay = Duration.ofNanos(1_200_000);
+
+  @JsonProperty
+  private Duration responseDelayJitter = Duration.ofNanos(500_000);
+
+  @JsonProperty
+  private Duration receiptDelay = Duration.ofMillis(1_200);
+
+  @JsonProperty
+  private Duration receiptDelayJitter = Duration.ofMillis(800);
+
+  @JsonProperty
+  private double receiptProbability = 0.82;
+
   public boolean isEnforceUnsealedSenderRateLimit() {
     return enforceUnsealedSenderRateLimit;
   }
@@ -25,4 +44,28 @@ public class DynamicMessageRateConfiguration {
   public Set<String> getRateLimitedCountryCodes() {
     return rateLimitedCountryCodes;
   }
+
+  public Set<String> getRateLimitedHosts() {
+    return rateLimitedHosts;
+  }
+
+  public Duration getResponseDelay() {
+    return responseDelay;
+  }
+
+  public Duration getResponseDelayJitter() {
+    return responseDelayJitter;
+  }
+
+  public Duration getReceiptDelay() {
+    return receiptDelay;
+  }
+
+  public Duration getReceiptDelayJitter() {
+    return receiptDelayJitter;
+  }
+
+  public double getReceiptProbability() {
+    return receiptProbability;
+  }
 }