TheThing/spserver
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Refactor setting resolution from command line and config file

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This commit is contained in:
Misha Wolfson 2016-12-15 17:55:59 -05:00
parent 1cf7c4a7bb
commit f1b7dd2a9d
1 changed files with 65 additions and 32 deletions
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97
lib/spserver.js
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@ -10,9 +10,15 @@ var nStatic = require('node-static');
var config = require('./config');
var logger = require('./logger');
var env = config.get('NODE_ENV');
var spserver = function (settings) {
// The different config sources sometimes manipulate different setting names.
// E.g. command line flags maniuplate root settings, but config files can
// manipulate settings at the prod/debug level. Resolve all of these into a
// final object of settings.
function _resolveFinalSettings(settings) {
var finalSettings = {};
var env = config.get('NODE_ENV');
if (!settings) {
settings = config.get();
}
@ -20,9 +26,55 @@ var spserver = function (settings) {
settings[env] = {};
}
var fileServer = new nStatic.Server(path.resolve(settings.serve || settings[env].server));
// For 'name', 'file', 'serve', and 'port', default to the global setting rather than an
// individual environment's setting, because it might have been set via command-line flags
_(['name', 'file', 'serve', 'port']).forEach(function (field) {
finalSettings[field] = settings[field] || settings[env][field];
});
var base = generateBase(path.resolve(settings.file || settings[env].file), settings);
// For 'staticOptions', there are no command-line flags, so individual configuration options
// override global defaults where set
finalSettings.staticOptions = _.defaultsDeep(settings.staticOptions, settings[env].staticOptions);
// Make a template function so we can just pass that in downstream
finalSettings.template = (settings.template || settings[env].template) ?
function (contents) {
// Note: template is run with _original_, non-resolved settings
return _.template(contents)(settings);
} : null;
return finalSettings;
}
function generateBase(file, finalSettings) {
if (!file) {
return null;
}
if (_.endsWith(file, 'js')) {
return require(file);
}
var contents = fs.readFileSync(file);
if (finalSettings.template) {
contents = finalSettings.template(contents);
}
return function(req, res) {
res.writeHead(200, {'Content-Type': 'text/html'});
res.end(contents);
};
}
var spserver = function (settings) {
var finalSettings = _resolveFinalSettings(settings);
var fileServer = new nStatic.Server(
path.resolve(finalSettings.serve),
finalSettings.staticOptions
);
var base = generateBase(path.resolve(finalSettings.file), finalSettings);
var server = http.createServer(function (req, res) {
logger.debug('[REQ] GET:', req.url);
@ -52,37 +104,18 @@ var spserver = function (settings) {
}).resume();
});
server.listen(settings.port || settings[env].port);
server.listen(finalSettings.port);
logger.info('Static server',
settings.name,
'is listening on port',
settings.port || settings[env].port,
'with public folder',
settings.serve || settings[env].serve);
logger.info(
'Started single-page server: ' + finalSettings.name +
', base file: ' + finalSettings.file +
', static folder: ' + finalSettings.serve +
', port: ' + finalSettings.port
);
return server;
};
spserver.generateBase = generateBase;
function generateBase(file, settings) {
if (!file) {
return null;
}
if (_.endsWith(file, 'js')) {
return require(file);
}
var contents = fs.readFileSync(file);
if (settings.template || settings[env] && settings[env].template) {
contents = _.template(contents)(settings);
}
return function(req, res) {
res.writeHead(200, {'Content-Type': 'text/html'});
res.end(contents);
};
}
module.exports = spserver;