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https://github.com/bigchaindb/js-bigchaindb-driver.git
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114 lines
3.9 KiB
ReStructuredText
114 lines
3.9 KiB
ReStructuredText
BigchainDB JavaScript Driver
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============================
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.. image:: https://img.shields.io/npm/v/bigchaindb-driver.svg
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:target: https://www.npmjs.com/package/bigchaindb-driver
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.. image:: https://codecov.io/gh/bigchaindb/js-bigchaindb-driver/branch/master/graph/badge.svg
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:target: https://codecov.io/gh/bigchaindb/js-bigchaindb-driver
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.. image:: https://img.shields.io/badge/js-ascribe-39BA91.svg
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:target: https://github.com/ascribe/javascript
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.. image:: https://travis-ci.org/bigchaindb/js-bigchaindb-driver.svg?branch=master
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:target: https://travis-ci.org/bigchaindb/js-bigchaindb-driver
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.. image:: https://badges.greenkeeper.io/bigchaindb/js-bigchaindb-driver.svg
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:target: https://greenkeeper.io/
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Features
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--------
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* Support for preparing, fulfilling, and sending transactions to a BigchainDB
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node.
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* Retrieval of transactions by id.
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* Getting status of a transaction by id.
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Compatibility Matrix
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--------------------
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+-----------------------+----------------------------------+
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| **BigchainDB Server** | **BigchainDB Javascript Driver** |
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+=======================+==================================+
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| ``0.10`` | ``0.1.x`` |
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+-----------------------+----------------------------------+
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| ``1.0`` | ``0.3.x`` |
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+-----------------------+----------------------------------+
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| ``1.3`` | ``3.x.x`` |
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+-----------------------+----------------------------------+
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| ``2.0`` | ``4.x.x`` |
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+-----------------------+----------------------------------+
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Older versions
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--------------------
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#### Versions 4.x.x
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As part of the changes in the BigchainDB 2.0 server, some endpoint were
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modified. In order to be consistent with them, the JS driver does not have
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anymore the `pollStatusAndFetchTransaction()` method as there are three
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different ways of posting a transaction.
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- `async` using the `postTransaction`: the response will return immediately and not wait to see if the transaction is valid.
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- `sync` using the `postTransactionSync`: the response will return after the transaction is validated.
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- `commit` using the `postTransactionCommit`: the response will return after the transaction is committed to a block.
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By default in the docs we will use the `postTransactionCommit` as is way of
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being sure that the transaction is validated and commited to a block, so
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there will not be any issue if you try to transfer the asset immediately.
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#### Versions 3.2.x
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For versions below 3.2, a transfer transaction looked like:
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.. code-block:: js
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const createTranfer = BigchainDB.Transaction.makeTransferTransaction(
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txCreated,
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metadata, [BigchainDB.Transaction.makeOutput(
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BigchainDB.Transaction.makeEd25519Condition(alice.publicKey))],
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0
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)
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const signedTransfer = BigchainDB.Transaction.signTransaction(createTranfer,
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keypair.privateKey)
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In order to upgrade and do it compatible with the new driver version, this
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transaction should be now:
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.. code-block:: js
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const createTranfer = BigchainDB.Transaction.makeTransferTransaction(
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[{ tx: txCreated, output_index: 0 }],
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[BigchainDB.Transaction.makeOutput(
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BigchainDB.Transaction.makeEd25519Condition(alice.publicKey))],
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metaData
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)
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const signedTransfer = BigchainDB.Transaction.signTransaction(createTranfer,
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keypair.privateKey)
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The upgrade allows to create transfer transaction spending outputs that belong
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to different transactions. So for instance is now possible to create a transfer
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transaction spending two outputs from two different create transactions:
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.. code-block:: js
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const createTranfer = BigchainDB.Transaction.makeTransferTransaction(
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[{ tx: txCreated1, output_index: 0 },
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{ tx: txCreated2, output_index: 0}],
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[BigchainDB.Transaction.makeOutput(
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BigchainDB.Transaction.makeEd25519Condition(alice.publicKey))],
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metaData
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)
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const signedTransfer = BigchainDB.Transaction.signTransaction(createTranfer,
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keypair.privateKey)
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