chore: add getTransactionSummary

packages/element-lib/src/sidetree-v2/index.js

@@ -2,8 +2,8 @@ const {
   resolve,
   sync,
   batchWrite,
-  getTransactions,
 } = require('./protocol');
+const { getTransactions, getTransactionSummary } = require('./protocol/getTransactions');
 const BatchScheduler = require('./protocol/BatchScheduler');
 const op = require('./op');
 const func = require('./func');
@@ -35,6 +35,7 @@ class Sidetree {
     this.parameters = parameters;
 
     this.getTransactions = getTransactions(this);
+    this.getTransactionSummary = getTransactionSummary(this);
   }
 }
 

packages/element-lib/src/sidetree-v2/protocol/getTransactions.js

@@ -11,4 +11,25 @@ const getTransactions = sidetree => async () => {
   return lastTransactionsWithTimestamp;
 };
 
-module.exports = getTransactions;
+const getTransactionSummary = sidetree => async (transactionTimeHash) => {
+  const transaction = await sidetree.getTransactions({ transactionTimeHash });
+  const anchorFile = await sidetree.func.readThenWriteToCache(sidetree, transaction.anchorFileHash);
+  const batchFile = await sidetree.func.readThenWriteToCache(sidetree, anchorFile.batchFileHash);
+  let operations;
+  try {
+    operations = sidetree.func.batchFileToOperations(batchFile);
+  } catch (e) {
+    operations = [];
+  }
+  return {
+    transaction,
+    anchorFile,
+    batchFile,
+    operations,
+  };
+};
+
+module.exports = {
+  getTransactions,
+  getTransactionSummary,
+};

packages/element-lib/src/sidetree-v2/protocol/index.js

@@ -1,11 +1,9 @@
 const resolve = require('./resolve');
 const sync = require('./sync');
 const batchWrite = require('./batchWrite');
-const getTransactions = require('./getTransactions');
 
 module.exports = {
   resolve,
   sync,
   batchWrite,
-  getTransactions,
 };