issue appending to loaded Log

[sdelvalle57]

Hey Guys

I have an issue trying to append new data to a log loaded. What Im doing so far is:

1. Creating a new entry

   const uid = 12345;
   const identity = await IdentityProvider.createIdentity({ id: dbName });
   const log = new Log(ipfs, identity, { logId: uid });
   await log.append({uid});
   const hash = await log.toMultihash();
   console.log(log.toSnapshot().values.length) //1
   return hash;

2. With the hash returned load the Log and append new object

   const newObj = {timestamp: 12345454555};
   const identity = await IdentityProvider.createIdentity({ id: dbName });
   const log = await Log.fromMultihash(ipfs, identity, hash, {});
   await log.append(dbObject)
   console.log(log.toSnapshot().values.length) //2

   At this point everything seems ok, but when I reload to fetch the new data, Is like if I didnt append the last object:

   const identity = await IdentityProvider.createIdentity({ id: dbName });
   const log = await Log.fromMultihash(ipfs, identity, hash, {});
   console.log(log.toSnapshot().values.length) //1, and only shows the object created in step 1

   I dont really know what Im missing to keep the new object I created in step 2

Thanks

[shamb0t]

Hey @sdelvalle57 :wave:

toMultihash will return a different hash after each append. You are using the hash which corresponds to the log with one entry. To retrieve subsequent entries you will need to call toMultihash again after the appends to get the correct hash:

    const newObj = {timestamp: 12345454555};
    const identity = await IdentityProvider.createIdentity({ id: dbName });
    const log = await Log.fromMultihash(ipfs, identity, hash, {});
    await log.append(newObject)
    console.log(log.toSnapshot().values.length) //2
    const newHash = await log.toMultihash() // Hash of log which includes `newObj`
...
    const identity = await IdentityProvider.createIdentity({ id: dbName });
    const log = await Log.fromMultihash(ipfs, identity, newHash, { logId: uid });
    console.log(log.toSnapshot().values.length) // should be 2

Does that fix your issue?