Implement accelerations API & config setting

backend/mempool-config.sample.json

@@ -136,5 +136,9 @@
       "trusted",
       "servers"
     ]
+  },
+  "MEMPOOL_SERVICES": {
+    "API": "https://mempool.space/api",
+    "ACCELERATIONS": false
   }
 }

backend/src/__fixtures__/mempool-config.template.json

@@ -127,5 +127,9 @@
     "AUDIT": false,
     "AUDIT_START_HEIGHT": 774000,
     "SERVERS": []
+  },
+  "MEMPOOl_SERVICES": {
+    "API": "__MEMPOOL_SERVICES_API__",
+    "ACCELERATIONS": "__MEMPOOL_SERVICES_ACCELERATIONS__"
   }
 }

backend/src/__tests__/config.test.ts

@@ -127,6 +127,11 @@ describe('Mempool Backend Config', () => {
         AUDIT_START_HEIGHT: 774000,
         SERVERS: []
       });
+
+      expect(config.MEMPOOL_SERVICES).toStrictEqual({
+        API: "",
+        ACCELERATIONS: false,
+      });
     });
   });
 
@@ -160,6 +165,8 @@ describe('Mempool Backend Config', () => {
       expect(config.PRICE_DATA_SERVER).toStrictEqual(fixture.PRICE_DATA_SERVER);
 
       expect(config.EXTERNAL_DATA_SERVER).toStrictEqual(fixture.EXTERNAL_DATA_SERVER);
+
+      expect(config.MEMPOOL_SERVICES).toStrictEqual(fixture.MEMPOOL_SERVICES);
     });
   });
 

backend/src/api/mempool.ts

@@ -337,6 +337,10 @@ class Mempool {
   }
 
   public async $updateAccelerations(): Promise<string[]> {
+    if (!config.MEMPOOL_SERVICES.ACCELERATIONS) {
+      return [];
+    }
+
     try {
       const newAccelerations = await accelerationApi.fetchAccelerations$();
 

backend/src/config.ts

@@ -137,7 +137,11 @@ interface IConfig {
     AUDIT: boolean;
     AUDIT_START_HEIGHT: number;
     SERVERS: string[];
-  }
+  },
+  MEMPOOL_SERVICES: {
+    API: string;
+    ACCELERATIONS: boolean;
+  },
 }
 
 const defaults: IConfig = {
@@ -275,6 +279,10 @@ const defaults: IConfig = {
     'AUDIT': false,
     'AUDIT_START_HEIGHT': 774000,
     'SERVERS': [],
+  },
+  'MEMPOOL_SERVICES': {
+    'API': '',
+    'ACCELERATIONS': false,
   }
 };
 
@@ -296,6 +304,7 @@ class Config implements IConfig {
   EXTERNAL_DATA_SERVER: IConfig['EXTERNAL_DATA_SERVER'];
   MAXMIND: IConfig['MAXMIND'];
   REPLICATION: IConfig['REPLICATION'];
+  MEMPOOL_SERVICES: IConfig['MEMPOOL_SERVICES'];
 
   constructor() {
     const configs = this.merge(configFromFile, defaults);
@@ -316,6 +325,7 @@ class Config implements IConfig {
     this.EXTERNAL_DATA_SERVER = configs.EXTERNAL_DATA_SERVER;
     this.MAXMIND = configs.MAXMIND;
     this.REPLICATION = configs.REPLICATION;
+    this.MEMPOOL_SERVICES = configs.MEMPOOL_SERVICES;
   }
 
   merge = (...objects: object[]): IConfig => {