node-rpc: add compacttree

lib/node/rpc.js

@@ -177,6 +177,7 @@ class RPC extends RPCBase {
     this.add('gettxout', this.getTXOut);
     this.add('gettxoutsetinfo', this.getTXOutSetInfo);
     this.add('pruneblockchain', this.pruneBlockchain);
+    this.add('compacttree', this.compactTree);
     this.add('verifychain', this.verifyChain);
 
     this.add('invalidateblock', this.invalidateBlock);
@@ -1104,6 +1105,23 @@ class RPC extends RPCBase {
     }
   }
 
+  async compactTree(args, help) {
+    if (help || args.length !== 0)
+      throw new RPCError(errs.MISC_ERROR, 'compacttree');
+
+    if (this.chain.options.spv)
+      throw new RPCError(errs.MISC_ERROR, 'Cannot compact tree in SPV mode.');
+
+    if (this.chain.height < this.network.block.pruneAfterHeight)
+      throw new RPCError(errs.MISC_ERROR, 'Chain is too short for compacting.');
+
+    try {
+      await this.chain.compactTree();
+    } catch (e) {
+      throw new RPCError(errs.DATABASE_ERROR, e.message);
+    }
+  }
+
   async verifyChain(args, help) {
     if (help || args.length > 2) {
       throw new RPCError(errs.MISC_ERROR,