This library used to be named
eris-db.js. It is now
@monax/legacy-db.js as part of the company-wide renaming to Monax and also to distinguish it from the upcoming new client API. Although it is a legacy API it will continue to be supported.
To use new versions of the library in existing code, change the line in your
package.json which looks like this:
to make it look like this:
You can check the installed version of Node.js with the command:
$ node --version
If your distribution of Linux has a version older than 6 then you can update it using NodeSource's distribution.
$ npm install @monax/legacy-db
If you created a Burrow server using the Monax CLI tool, you can find out its IP address using the following command:
$ monax chains ip <name of Burrow server>
The main class is
Burrow. A standard
Burrow instance is created like this:
var burrowFactory = require('@monax/legacy-db');var burrow = burrowFactory.createInstance("http://<IP address>:1337/rpc");
The parameters for
createInstance is the server URL as a string. The client-type is chosen based on the URL scheme. As of now, the supported schemes are:
ws (websockets). No additional configuration is needed.
There are bindings for all the RPC methods. All functions are on the form
function(param1, param2, ... , callback), where the callback is a function on the form
function(error,data) (it is documented under the name
data object is the same as you would get by calling the corresponding RPC method directly.
This is the over-all structure of the library. The
unsafe flag means a private key is either sent or received, so should be used with care (dev only).
NOTE: There will be links to the proper jsdoc and integration with Monax.io. For now, the components point to the actual code files and methods points to the web-API method in question.
The accounts object has methods for getting account and account-storage data.
The accounts object has methods for getting blockchain-related data, such as a list of blocks, or individual blocks, or the hash of the genesis block.
The consensus object has methods for getting consensus-related data.
The tendermint client will generate and fire off events when important things happen, like when a new block has been committed, or someone is transacting to an account. It is possible to subscribe to these events. These are the methods for subscribing, un-subscribing and polling.
The helper functions makes it easier to manage subscriptions. Normally you'd be using these functions rather then managing the subscriptions yourself.
Helper functions always contain two callback functions - a
createCallback(error, data) and an
createCallback data is an EventSub object, that can be used to do things like getting the event ID, the subscriber ID, and to stop the subscription.
eventCallback data is the event object. This object is different depending on the event type. In the case of
NewBlock it will be a block, the consensus events is a transaction object, etc. More info can be found in the api doc.
subLogEvent are two different names for the same type of subscription (log events).
The NameReg object has methods for accessing the name registry.
The accounts object has methods for getting network-related data, such as a list of all peers. It could also have been named "node".
Client Version may be a bit misplaced
A transaction is the equivalence of a database
write operation. They can be done in two ways. There's the "dev" way, which is to call
transact and pass along the target address (if any), data, gas, and a private key used for signing. It is very similar to the old Ethereum way of transacting, except Tendermint does not keep accounts in the client, so a private key needs to be sent along. This means the server should either run on the same machine as the tendermint client, or in the same, private network.
broadcastTx will be the standard way of doing things if you want the key to remain on the users machine. This requires a browser plugin for doing the actual signing, which we will add later. For now, you should stick to the
To get a private key for testing/developing, you can run
tendermint gen_account if you have it installed. You can also run
tools/pa_generator.js if you have a local node running. It will take the url as command line argument at some point...
Calls provide read-only access to the smart contracts. It is used mostly to get data out of a contract-accounts storage by using the contracts accessor methods, but can be used to call any method that does not change any data in any account. A trivial example would be a contract function that takes two numbers as input, adds them, and then simply returns the sum.
There are two types of calls.
Call takes a data string and an account address and calls the code in that account (if any) using the provided data as input. This is the standard method for read-only operations.
CallCode works the same except you don't provide an account address but the actual compiled code instead. It's a dev tool for accessing the VM directly. "Code-execution as a service".
broadcastTx is useless until we add a client-side signing solution.
Generate documentation using the command
npm run doc.
To test the library against pre-recorded vectors:
To test the library against Burrow while recording vectors:
TEST=record npm test
To test Burrow against pre-recorded vectors without exercising the library:
TEST=server npm test
Debugging information will display on
stderr if the library is run with
NODE_DEBUG=monax in the environment.
Copyright 2015 Monax
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.