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node-spearhead/lib/config.js

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#!/usr/bin/env node
/**
* Copyright (c) 2014 Joyent Inc. All rights reserved.
*/
var p = console.log;
var assert = require('assert-plus');
var fs = require('fs');
var path = require('path');
var sprintf = require('extsprintf').sprintf;
var common = require('./common');
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var errors = require('./errors');
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var CONFIG_PATH = path.resolve(process.env.HOME, '.triton', 'config.json');
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var DEFAULTS_PATH = path.resolve(__dirname, '..', 'etc', 'defaults.json');
var OVERRIDE_KEYS = []; // config object keys to do a one-level deep override
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/**
* Load the Triton client config. This is a merge of the built-in "defaults" (at
* etc/defaults.json) and the "user" config (at ~/.triton/config.json if it
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* exists).
*
* This includes some internal data on keys with a leading underscore.
*/
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function loadConfigSync() {
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var c = fs.readFileSync(DEFAULTS_PATH, 'utf8');
var _defaults = JSON.parse(c);
var config = JSON.parse(c);
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if (fs.existsSync(CONFIG_PATH)) {
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c = fs.readFileSync(CONFIG_PATH, 'utf8');
var _user = JSON.parse(c);
var userConfig = JSON.parse(c);
if (typeof(userConfig) !== 'object' || Array.isArray(userConfig)) {
throw new errors.ConfigError(
sprintf('"%s" is not an object', CONFIG_PATH));
}
// These special keys are merged into the key of the same name in the
// base "defaults.json".
Object.keys(userConfig).forEach(function (key) {
if (~OVERRIDE_KEYS.indexOf(key) && config[key] !== undefined) {
Object.keys(userConfig[key]).forEach(function (subKey) {
if (userConfig[key][subKey] === null) {
delete config[key][subKey];
} else {
config[key][subKey] = userConfig[key][subKey];
}
});
} else {
config[key] = userConfig[key];
}
});
config._user = _user;
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}
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config._defaults = _defaults;
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// Add 'env' profile.
if (!config.profiles) {
config.profiles = [];
}
//XXX Add TRITON_* envvars.
config.profiles.push({
name: 'env',
account: process.env.SDC_USER || process.env.SDC_ACCOUNT,
url: process.env.SDC_URL,
keyId: process.env.SDC_KEY_ID,
insecure: common.boolFromString(process.env.SDC_TESTING)
});
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return config;
}
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/**
* Apply the given key:value updates to the user config and save it out.
*
* @param config {Object} The loaded config, as from `loadConfigSync`.
* @param updates {Object} key/value pairs to update.
*/
function updateUserConfigSync(config, updates) {
XXX
///XXX START HERE: to implement for 'sdc dcs add foo bar'
}
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//---- exports
module.exports = {
CONFIG_PATH: CONFIG_PATH,
loadConfigSync: loadConfigSync
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};
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