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accounts.js
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accounts.js
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'use strict';
var Logger = require('../../lib/logger');
var log = new Logger({scope: 'accounts'});
var smoment = require('../../lib/smoment');
var utils = require('../../lib/utils');
var hbase = require('../../lib/hbase')
var intervals = ['hour', 'day', 'week'];
/**
* Accounts
*/
var Accounts = function (req, res, next) {
var options;
// prepareOptions
function prepareOptions() {
var opts = {
start: smoment(req.query.start || '2013-01-01'),
end: smoment(req.query.end),
marker: req.query.marker,
interval: req.query.interval,
limit: Number(req.query.limit || 200),
descending: (/true/i).test(req.query.descending) ? true : false,
reduce: (/true/i).test(req.query.reduce) ? true : false,
parent: req.query.parent,
format: (req.query.format || 'json').toLowerCase()
};
if (!opts.start) {
return {error: 'invalid start date format', code: 400};
} else if (!opts.end) {
return {error: 'invalid end date format', code: 400};
}
if (opts.interval && intervals.indexOf(opts.interval) === -1) {
return {error: 'invalid interval', code: 400};
} else if (opts.interval && opts.reduce) {
return {error: 'cannot use reduce with interval', code: 400};
} else if (opts.interval && opts.parent) {
return {error: 'cannot use parent with interval', code: 400};
}
if (isNaN(opts.limit)) {
opts.limit = 200;
} else if (opts.limit > 1000) {
opts.limit = 1000;
}
return opts;
}
/**
* errorResponse
* return an error response
* @param {Object} err
*/
function errorResponse(err) {
log.error(err.error || err);
if (err.code && err.code.toString()[0] === '4') {
res.status(err.code).json({
result: 'error',
message: err.error
});
} else {
res.status(500).json({
result: 'error',
message: 'unable to get accounts'
});
}
}
/**
* successResponse
* return a successful response
* @param {Object} resp
*/
function successResponse(resp) {
if (resp.marker) {
utils.addLinkHeader(req, res, resp.marker);
}
// reduced, csv
if (options.reduce && options.format === 'csv') {
res.csv([{count: resp}], 'accounts-count.csv');
// reduced json
} else if (options.reduce) {
res.json({
result: 'success',
count: resp
});
// csv
} else if (options.format === 'csv') {
res.csv(resp.rows, 'accounts.csv');
// json
} else {
res.json({
result: 'success',
count: resp.rows.length,
marker: resp.marker,
accounts: resp.rows
});
}
}
options = prepareOptions();
if (options.error) {
errorResponse(options);
return;
}
hbase.getAccounts(options, function(err, resp) {
var accounts = [];
if (err || !resp) {
errorResponse(err);
} else if (options.reduce) {
successResponse(resp.rows[0]);
} else if (options.interval) {
successResponse(resp);
} else {
resp.rows.forEach(function(row) {
accounts.push({
account: row.account,
parent: row.parent,
initial_balance: row.balance,
inception: smoment(row.executed_time).format(),
ledger_index: row.ledger_index,
tx_hash: row.tx_hash,
genesis_balance: row.genesis_balance,
genesis_index: row.genesis_index
});
});
resp.rows = accounts;
successResponse(resp);
}
});
};
module.exports = Accounts;