Updates

storage-hypercore/hyper-p2p-core-audit-chain/index.js

@@ -3,6 +3,7 @@ const EventEmitter = require('bare-events')
 const b4a = require('b4a')
 const crypto = require('hypercore-crypto')
 const { assertCore } = require('../../_shared/storage-gossip-base.js')
+const { coreStats } = require('../../_shared/hypercore-base.js')
 const PROTOCOL = 'core-audit-chain/v1'
 
 function hashEntry (prevHash, event) {
@@ -58,6 +59,19 @@ class HyperP2PCoreAuditChain extends EventEmitter {
     return { ok: true, length: this._chain.length, head: this._headHash }
   }
 
+  chainLength () {
+    return this._chain.length
+  }
+
+  headEntry () {
+    return this._chain.length ? { ...this._chain[this._chain.length - 1] } : null
+  }
+
+  findByType (type) {
+    if (type == null || type === '') throw new Error('type required')
+    return this._chain.filter((e) => e.type === type).map((e) => ({ ...e }))
+  }
+
   tail (n = 10) {
     if (n < 0) throw new Error('n must be non-negative')
     if (n === 0) return []
@@ -80,13 +94,11 @@ class HyperP2PCoreAuditChain extends EventEmitter {
   }
 
   getStats () {
-    return {
-      ...this._stats,
+    return coreStats(this._stats, PROTOCOL, {
       length: this._chain.length,
       head: this._headHash,
-      coreLength: this.core ? this.core.length : 0,
-      protocol: PROTOCOL
-    }
+      coreLength: this.core ? this.core.length : 0
+    })
   }
 
   async ready () { return this }

storage-hypercore/hyper-p2p-core-audit-chain/package.json

@@ -1,6 +1,6 @@
 {
   "name": "hyper-p2p-core-audit-chain",
-  "version": "0.3.1",
+  "version": "0.3.2",
   "description": "Append-only audit chain on cores.",
   "main": "index.js",
   "type": "commonjs",

storage-hypercore/hyper-p2p-core-audit-chain/test/test.js

@@ -29,12 +29,23 @@ test('validation', async (t) => {
   await m.close()
 })
 
+test('headEntry findByType chainLength', async (t) => {
+  const m = new HyperP2PCoreAuditChain()
+  m.appendAudit({ type: 'a', n: 1 })
+  m.appendAudit({ type: 'b', n: 2 })
+  t.is(m.chainLength(), 2)
+  t.is(m.headEntry().type, 'b')
+  t.is(m.findByType('a').length, 1)
+  await m.close()
+})
+
 test('getStats', async (t) => {
   const m = new HyperP2PCoreAuditChain()
   m.appendAudit({ x: 1 })
   const s = m.getStats()
   t.is(s.protocol, 'core-audit-chain/v1')
   t.is(s.length, 1)
+  t.is(s.mode, 'hypercore')
   await m.close()
 })