open-consul/ui-v2/app/utils/components/discovery-chain/index.js

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const getNodesByType = function(nodes = {}, type) {
return Object.values(nodes).filter(item => item.Type === type);
};
const findResolver = function(resolvers, service, nspace = 'default', dc) {
if (typeof resolvers[service] === 'undefined') {
resolvers[service] = {
ID: `${service}.${nspace}.${dc}`,
Name: service,
Children: [],
};
}
return resolvers[service];
};
export const getAlternateServices = function(targets, a) {
let type;
const Targets = targets.map(function(b) {
// TODO: this isn't going to work past namespace for services
// with dots in the name, but by the time that becomes an issue
// we might have more data from the endpoint so we don't have to guess
// right now the backend also doesn't support dots in service names
const [aRev, bRev] = [a, b].map(item => item.split('.').reverse());
const types = ['Datacenter', 'Namespace', 'Service', 'Subset'];
return bRev.find(function(item, i) {
const res = item !== aRev[i];
if (res) {
type = types[i];
}
return res;
});
});
return {
Type: type,
Targets: Targets,
};
};
export const getSplitters = function(nodes) {
return getNodesByType(nodes, 'splitter').map(function(item) {
// Splitters need IDs adding so we can find them in the DOM later
// splitters have a service.nspace as a name
// do the reverse dance to ensure we don't mess up any
// service names with dots in them
const temp = item.Name.split('.');
temp.reverse();
temp.shift();
temp.reverse();
return {
...item,
ID: `splitter:${item.Name}`,
Name: temp.join('.'),
};
});
};
export const getRoutes = function(nodes, uid) {
return getNodesByType(nodes, 'router').reduce(function(prev, item) {
return prev.concat(
item.Routes.map(function(route, i) {
// Routes also have IDs added via createRoute
return createRoute(route, item.Name, uid);
})
);
}, []);
};
export const getResolvers = function(dc, nspace = 'default', targets = {}, nodes = {}) {
const resolvers = {};
// make all our resolver nodes
Object.values(nodes)
.filter(item => item.Type === 'resolver')
.forEach(function(item) {
const parts = item.Name.split('.');
let subset;
// this will leave behind the service.name.nspace.dc even if the service name contains a dot
if (parts.length > 3) {
subset = parts.shift();
}
parts.reverse();
// slice off from dc.nspace onwards leaving the potentially dot containing service name
// const nodeDc =
parts.shift();
// const nodeNspace =
parts.shift();
// if it does contain a dot put it back to the correct order
parts.reverse();
const service = parts.join('.');
const resolver = findResolver(resolvers, service, nspace, dc);
let failovers;
if (typeof item.Resolver.Failover !== 'undefined') {
// figure out what type of failover this is
failovers = getAlternateServices(item.Resolver.Failover.Targets, item.Name);
}
if (subset) {
const child = {
Subset: true,
ID: item.Name,
Name: subset,
};
if (typeof failovers !== 'undefined') {
child.Failover = failovers;
}
resolver.Children.push(child);
} else {
if (typeof failovers !== 'undefined') {
resolver.Failover = failovers;
}
}
});
Object.values(targets).forEach(target => {
// Failovers don't have a specific node
if (typeof nodes[`resolver:${target.ID}`] !== 'undefined') {
// We use this to figure out whether this target is a redirect target
const alternate = getAlternateServices([target.ID], `service.${nspace}.${dc}`);
// as Failovers don't make it here, we know anything that has alternateServices
// must be a redirect
if (alternate.Type !== 'Service') {
// find the already created resolver
const resolver = findResolver(resolvers, target.Service, nspace, dc);
// and add the redirect as a child, redirects are always children
const child = {
Redirect: true,
ID: target.ID,
Name: target[alternate.Type],
};
// redirects can then also have failovers
// so it this one does, figure out what type they are and add them
// to the redirect
if (typeof nodes[`resolver:${target.ID}`].Resolver.Failover !== 'undefined') {
child.Failover = getAlternateServices(
nodes[`resolver:${target.ID}`].Resolver.Failover.Targets,
target.ID
);
}
resolver.Children.push(child);
}
}
});
return Object.values(resolvers);
};
export const createRoute = function(route, router, uid) {
return {
...route,
Default: typeof route.Definition.Match === 'undefined',
ID: `route:${router}-${uid(route.Definition)}`,
};
};