git ssb - Merge pull request #2 from primea/actor-ids · wanderer🌟/js-primea-objects@f1d4a7d1

add actor ID generation

wanderer authored on 4/20/2018, 11:09:18 PM
GitHub committed on 4/20/2018, 11:09:18 PM
Parent: 9d65711f18037ce11d2627aa7db431836dd8d8e0
Parent: 8706ee72c8c3b2771f365432dc09557fb238d6b0

index.jsView
		@@ -1,4 +1,5 @@
	1 …	+const crypto = require('crypto')
1	2 …	const cbor = require('borc')
2	3 …	const EventEmitter = require('events')
3	4 …	const Buffer = require('safe-buffer').Buffer
4	5 …
		@@ -186,12 +187,40 @@
186	187 …	}
187	188 …	return 'invalid'
188	189 …	}
189	190 …
	191 …	+/**
	192 …	+ * returns the ID of an actor
	193 …	+ * @param {Object} id
	194 …	+ * @param {Number} id.nonce - the actor's nonce
	195 …	+ * @param {ID} id.parent - the actor's parent's ID
	196 …	+ * @return {ID}
	197 …	+ */
	198 …	+function generateActorId (id) {
	199 …	+ const encoded = _encodeActorId(id)
	200 …	+ const hashed = _hash(encoded)
	201 …	+ return new ID(hashed)
	202 …	+}
	203 …	+
	204 …	+function _encodeActorId (id) {
	205 …	+ if (id.parent) {
	206 …	+ return cbor.encode([id.nonce, id.parent.id])
	207 …	+ } else {
	208 …	+ return cbor.encode([id.nonce, null])
	209 …	+ }
	210 …	+}
	211 …	+
	212 …	+function _hash (buf) {
	213 …	+ const hash = crypto.createHash('sha256')
	214 …	+ hash.update(buf)
	215 …	+ return hash.digest().slice(0, 20)
	216 …	+}
	217 …	+
190	218 …	module.exports = {
191	219 …	Message,
192	220 …	ID,
193	221 …	FunctionRef,
194	222 …	ModuleRef,
195	223 …	decoder,
196		- getType
	224 …	+ getType,
	225 …	+ generateActorId
197	226 …	}

package-lock.jsonView
The diff is too large to show. Use a local git client to view these changes. Old file size: 335961 bytes New file size: 335962 bytes

tests/index.jsView
		@@ -47,4 +47,20 @@
47	47 …	t.equals(objects.getType(Buffer.from([])), 'data')
48	48 …
49	49 …	t.end()
50	50 …	})
	51 …	+
	52 …	+tape('actor IDs', t => {
	53 …	+ const id0 = { nonce: 0, parent: null }
	54 …	+ const hashedId0 = objects.generateActorId(id0)
	55 …	+ t.deepEquals(hashedId0.id, Buffer.from('372a08b828598122fc64c4aa94735c770f25bbbc', 'hex'))
	56 …	+
	57 …	+ const id00 = { nonce: 0, parent: hashedId0 }
	58 …	+ const hashedId00 = objects.generateActorId(id00)
	59 …	+ t.deepEquals(hashedId00.id, Buffer.from('10d7d4be8663c37d8ea7cff89b7c01c059ebbc80', 'hex'))
	60 …	+
	61 …	+ const id01 = { nonce: 1, parent: hashedId0 }
	62 …	+ const hashedId01 = objects.generateActorId(id01)
	63 …	+ t.deepEquals(hashedId01.id, Buffer.from('0ca311b75efd27e7daf6eec8b51b5c1fe33ff233', 'hex'))
	64 …	+
	65 …	+ t.end()
	66 …	+})

wanderer🌟 / js-primea-objects