* ui: Discovery-Chain: Cope with redirects that have failovers
We found a few stranger configurations for discovery-chain, one of which
was redirects that can then failover.
We altered the parsing here to include 2 passes, one to organize the
nodes into resolvers and children/subsets based on the nodes themselves, which
includes adding the failovers to resolvers and subsets.
We then do a second pass which can more reliably figure out whether a
target is a redirect or a failover (target failovers don't have a
corresponding node), this then adds the redirect children to the already
exising resolver (from the first pass) and then checks if the redirect
also has failovers and adds those if so.
* ui: Check to see if we have a user configured default route or not
...if we don't add one so the visualization looks complete
* Reorganize resolvers so its clearer what's happening
* Use entire route definition for id
* Clean up a tiny bit more, use guid for ids instead of JSON
* ui: Externalize disco-chain utils and add initial unit testing
* Add some click outside-ness for de-highlighting things
* Add data layer for discovery chain (model/adapter/serializer/repo)
* Add routing plus template for routing tab
* Add extra deps - consul-api-double upgrade plus ngraph for graphing
* Add discovery-chain and related components and helpers:
1. discovery-chain to orchestrate/view controller
2. route-card, splitter-card, resolver card to represent the 3 different
node types.
3. route-match helper for easy formatting of route rules
4. dom-position to figure out where things are in order to draw lines
5. svg-curve, simple wrapper around svg's <path d=""> attribute format.
6. data-structs service. This isn't super required but we are using
other data-structures provided by other third party npm modules in other
yet to be merged PRs. All of these types of things will live here for
easy access/injection/changability
7. Some additions to our css-var 'polyfill' for a couple of extra needed
rules
* Related CSS for discovery chain
1. We add a %card base component here, eventually this will go into our
base folder and %stats-card will also use it for a base component.
2. New icon for failovers
* ui: Discovery Chain Continued (#6939)
1. Add in the things we use for the animations
2 Use IntersectionObserver so we know when the tab is visible,
otherwise the dom-position helper won't work as the dom elements don't
have any display.
3. Add some base work for animations and use them a little
4. Try to detect if a resolver is a redirect. Right now this works for
datacenters and namespaces, but it can't work for services and subsets -
we are awaiting backend support for doing this properly.
5. Add a fake 'this service has no routes' route that says 'Default'
6. redirect icon
7. Add CSS.escape polyfill for Edge
John Cowen