88 lines
2.3 KiB
JavaScript
88 lines
2.3 KiB
JavaScript
var url = require('url');
|
|
var dns = require('dns');
|
|
|
|
var defaults = require('./defaults');
|
|
|
|
var val = function(key, config, envVar) {
|
|
if (envVar === undefined) {
|
|
envVar = process.env[ 'PG' + key.toUpperCase() ];
|
|
} else if (envVar === false) {
|
|
// do nothing ... use false
|
|
} else {
|
|
envVar = process.env[ envVar ];
|
|
}
|
|
|
|
return config[key] ||
|
|
envVar ||
|
|
defaults[key];
|
|
};
|
|
|
|
//parses a connection string
|
|
var parse = require('pg-connection-string').parse;
|
|
|
|
var useSsl = function() {
|
|
switch(process.env.PGSSLMODE) {
|
|
case "disable":
|
|
return false;
|
|
case "prefer":
|
|
case "require":
|
|
case "verify-ca":
|
|
case "verify-full":
|
|
return true;
|
|
}
|
|
return defaults.ssl;
|
|
};
|
|
|
|
var ConnectionParameters = function(config) {
|
|
config = typeof config == 'string' ? parse(config) : (config || {});
|
|
this.user = val('user', config);
|
|
this.database = val('database', config);
|
|
this.port = parseInt(val('port', config), 10);
|
|
this.host = val('host', config);
|
|
this.password = val('password', config);
|
|
this.binary = val('binary', config);
|
|
this.ssl = config.ssl || useSsl();
|
|
this.client_encoding = val("client_encoding", config);
|
|
//a domain socket begins with '/'
|
|
this.isDomainSocket = (!(this.host||'').indexOf('/'));
|
|
|
|
this.application_name = val('application_name', config, 'PGAPPNAME');
|
|
this.fallback_application_name = val('fallback_application_name', config, false);
|
|
};
|
|
|
|
var add = function(params, config, paramName) {
|
|
var value = config[paramName];
|
|
if(value) {
|
|
params.push(paramName+"='"+value+"'");
|
|
}
|
|
};
|
|
|
|
ConnectionParameters.prototype.getLibpqConnectionString = function(cb) {
|
|
var params = [];
|
|
add(params, this, 'user');
|
|
add(params, this, 'password');
|
|
add(params, this, 'port');
|
|
add(params, this, 'application_name');
|
|
add(params, this, 'fallback_application_name');
|
|
|
|
if(this.database) {
|
|
params.push("dbname='" + this.database + "'");
|
|
}
|
|
if(this.host) {
|
|
params.push("host=" + this.host);
|
|
}
|
|
if(this.isDomainSocket) {
|
|
return cb(null, params.join(' '));
|
|
}
|
|
if(this.client_encoding) {
|
|
params.push("client_encoding='" + this.client_encoding + "'");
|
|
}
|
|
dns.lookup(this.host, function(err, address) {
|
|
if(err) return cb(err, null);
|
|
params.push("hostaddr=" + address);
|
|
return cb(null, params.join(' '));
|
|
});
|
|
};
|
|
|
|
module.exports = ConnectionParameters;
|