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Upgrade Notes

From Bitcore 3.0.0 to 4.0.0

[email protected] to [email protected]

This major upgrade includes changes to indexes, API methods and services. Please review below details before upgrading.

Indexes

Indexes include more information and are now also faster. Because of this a reindex will be necessary when upgrading as the address and database indexes are now a part of bitcoind with three new bitcoin.conf options:

  • -addressindex
  • -timestampindex
  • -spentindex

To start reindexing add reindex=1 during the first startup only.

Configuration Options

  • The bitcoin.conf file in will need to be updated to include additional indexes (see below).
  • The datadir option is now a part of bitcoind spawn configuration, and there is a new option to connect to multiple bitcoind processes (Please see Bitcoin Service Docs for more details). The services db and address are now a part of the bitcoind service. Here is how to update litecore-node.json configuration options:

Before:

{
  "datadir": "/home/<username>/.litecoin",
  "network": "livenet",
  "port": 3001,
  "services": [
    "address",
    "litecoind",
    "db",
    "web"
  ]
}

After:

{
  "network": "livenet",
  "port": 3001,
  "services": [
    "litecoind",
    "web"
  ],
  "servicesConfig": {
    "litecoin": {
      "spawn": {
        "datadir": "/home/<username>/.litecoin",
        "exec": "/home/<username>/litecore-node/bin/litecoind"
      }
    }
  }
}

It will also be necessary to update bitcoin.conf settings, to include these fields:

server=1
whitelist=127.0.0.1
txindex=1
addressindex=1
timestampindex=1
spentindex=1
zmqpubrawtx=tcp://127.0.0.1:<port>
zmqpubhashblock=tcp://127.0.0.1:<port>
rpcallowip=127.0.0.1
rpcuser=<user>
rpcpassword=<password>

Important: Once changes have been made you'll also need to add the reindex=1 option only for the first startup to regenerate the indexes. Once this is complete you should be able to remove the litecore-node.db directory with the old indexes.

API and Service Changes

  • Many API methods that were a part of the db and address services are now a part of the bitcoind service. Please see Bitcoin Service Docs for more details.
  • The db and address services are deprecated, most of the functionality still exists. Any services that were extending indexes with the db service, will need to manage chain state itself, or build the indexes within bitcoind.