121 lines
4.2 KiB
JavaScript
121 lines
4.2 KiB
JavaScript
export default function(config = {}, win = window, doc = document) {
|
|
const dev = function() {
|
|
return doc.cookie
|
|
.split(';')
|
|
.filter(item => item !== '')
|
|
.map(item => item.trim().split('='));
|
|
};
|
|
const user = function(str) {
|
|
const item = win.localStorage.getItem(str);
|
|
return item === null ? undefined : item;
|
|
};
|
|
const getResourceFor = function(src) {
|
|
try {
|
|
return (
|
|
win.performance.getEntriesByType('resource').find(item => {
|
|
return item.initiatorType === 'script' && src === item.name;
|
|
}) || {}
|
|
);
|
|
} catch (e) {
|
|
return {};
|
|
}
|
|
};
|
|
const scripts = doc.getElementsByTagName('script');
|
|
// we use the currently executing script as a reference
|
|
// to figure out where we are for other things such as
|
|
// base url, api url etc
|
|
const currentSrc = scripts[scripts.length - 1].src;
|
|
let resource;
|
|
// TODO: Potentially use ui_config {}, for example
|
|
// turning off blocking queries if its a busy cluster
|
|
// forcing/providing amount of possible HTTP connections
|
|
// re-setting the base url for the API etc
|
|
const operator = function(str, env) {
|
|
let protocol;
|
|
switch (str) {
|
|
case 'CONSUL_BASE_UI_URL':
|
|
return currentSrc
|
|
.split('/')
|
|
.slice(0, -2)
|
|
.join('/');
|
|
case 'CONSUL_HTTP_PROTOCOL':
|
|
if (typeof resource === 'undefined') {
|
|
// resource needs to be retrieved lazily as entries aren't guaranteed
|
|
// to be available at script execution time (caching seems to affect this)
|
|
// waiting until we retrieve this value lazily at runtime means that
|
|
// the entries are always available as these values are only retrieved
|
|
// after initialization
|
|
// current is based on the assumption that whereever this script is it's
|
|
// likely to be the same as the xmlhttprequests
|
|
resource = getResourceFor(currentSrc);
|
|
}
|
|
return resource.nextHopProtocol || 'http/1.1';
|
|
case 'CONSUL_HTTP_MAX_CONNECTIONS':
|
|
protocol = env('CONSUL_HTTP_PROTOCOL');
|
|
// http/2, http2+QUIC/39 and SPDY don't have connection limits
|
|
switch (true) {
|
|
case protocol.indexOf('h2') === 0:
|
|
case protocol.indexOf('hq') === 0:
|
|
case protocol.indexOf('spdy') === 0:
|
|
// TODO: Change this to return -1 so we try to consistently
|
|
// return a value from env vars
|
|
return;
|
|
default:
|
|
// generally 6 are available
|
|
// reserve 1 for traffic that we can't manage
|
|
return 5;
|
|
}
|
|
}
|
|
};
|
|
const ui = function(key) {
|
|
let $;
|
|
switch (config.environment) {
|
|
case 'development':
|
|
case 'staging':
|
|
case 'coverage':
|
|
case 'test':
|
|
$ = dev().reduce(function(prev, [key, value]) {
|
|
switch (key) {
|
|
case 'CONSUL_ACLS_ENABLE':
|
|
prev['CONSUL_ACLS_ENABLED'] = !!JSON.parse(String(value).toLowerCase());
|
|
break;
|
|
case 'CONSUL_NSPACES_ENABLE':
|
|
prev['CONSUL_NSPACES_ENABLED'] = !!JSON.parse(String(value).toLowerCase());
|
|
break;
|
|
default:
|
|
prev[key] = value;
|
|
}
|
|
return prev;
|
|
}, {});
|
|
if (typeof $[key] !== 'undefined') {
|
|
return $[key];
|
|
}
|
|
break;
|
|
}
|
|
return config[key];
|
|
};
|
|
return function env(str) {
|
|
switch (str) {
|
|
// All user providable values should start with CONSUL_UI
|
|
// We allow the user to set these ones via localStorage
|
|
// user value is preferred.
|
|
case 'CONSUL_UI_DISABLE_REALTIME':
|
|
case 'CONSUL_UI_DISABLE_ANCHOR_SELECTION':
|
|
// these are booleans cast things out
|
|
return !!JSON.parse(String(user(str) || 0).toLowerCase()) || ui(str);
|
|
case 'CONSUL_UI_REALTIME_RUNNER':
|
|
// these are strings
|
|
return user(str) || ui(str);
|
|
|
|
case 'CONSUL_BASE_UI_URL':
|
|
case 'CONSUL_HTTP_PROTOCOL':
|
|
case 'CONSUL_HTTP_MAX_CONNECTIONS':
|
|
// We allow the operator to set these ones via various methods
|
|
// although UI developer config is preferred
|
|
return ui(str) || operator(str, env);
|
|
default:
|
|
return ui(str);
|
|
}
|
|
};
|
|
}
|