Commit Graph

297 Commits

Author SHA1 Message Date
John Cowen 8e5cb78c1c ui: Add new Help menu with links to docs, learn and GH (#7310) 2020-05-12 17:14:03 +00:00
John Cowen f306c753e2 ui: HTTP Body testing (#7290)
* ui: Test Coverage Reporting (#7027)

* Serve up the /coverage folder whilst developing

* Upgrade ember-cli-api-double now it supports passthrough per url

* ui: make env into a service and use it where we need to be injectable

* Give http/client a body method so we can use it on its own for testing

* Add test helper for testing with and without nspaces enabled

* Add two tests, one thay needs nspaces and one that doesn't

* Keep cleaning up client/http, whilst figuring out a immutable bug

* Convert tests to new return format ([actual, leftovers])
2020-05-12 17:14:02 +00:00
John Cowen 1a7a1fb4f1 Upgrade to use structure-icons 1.8 (plus additional mask placeholders) (#7287) 2020-05-12 17:13:58 +00:00
John Cowen e9ed49d9aa ui: Test coverage developer experience (#7275)
* ui: Add getSplitters unit test and additional getResolvers test

* Make ordering of makefile target consistent
2020-05-12 17:13:57 +00:00
John Cowen 771973a713 ui: Add consul-service-list presentational component (#7279)
This commit moves our service list into a new presentational component,
and is therefore mainly just moving things around. The main thing moved
here is the logic required to resizing columns correctly is now moved to
a component instead of the controller
2020-05-12 17:13:56 +00:00
John Cowen 7dc5201676 ui: Remove `next` from usage from discovery-chain component (#7273)
In a previous iteration of discovery-chain wrapping some event listeners
in a call to `next` (i.e. do this on next tick) was necessary. We added
a comment in here to see if we could get rid of it at a later date.

We've taken another look at this and it looks like this `next` is no
longer required in this later iteration. Further more there is the
tiniest chance that possibly, as we are adding listeners on next tick, that the
listeners could be added after component destruction, which means when
you click on the page we try to set a property of a destroyed object and
boom.

Removing this `next` removes this tiny possibility.
2020-05-12 17:13:55 +00:00
John Cowen b6915793d0 ui: Remove custom css-vars 'polyfill' and use native CSS props (#7249)
* ui: Remove custom css-vars 'polyfill' and use native CSS props

Previously we used a sort of polyfill for certain places where we needed
CSS property-like behavior. This meant duplicating code between JS and
CSS, specifically some of our SVG icons.

We moved to CSS props only in the places where they are beneficial and
populated the variables with our already existing SASS variables.

This means we no longer have to duplicate CSS and we can remove our
custom css-var helper/polyfill.
2020-05-12 17:13:54 +00:00
John Cowen 7bca634087 ui: Slight refactor 'name deciding' for `request` > `rpc` (#6850)
During the refactor of the data layer we had a method that you can use
to do a request/response call i.e. adapter.request > serializer.respond

We weren't sure what to name this but eventually wanted it to live on
the HTTPAdapter itself (see removed comments in the changeset)

We've decided `rpc` is a good name and we've moved this to where we want
it. We've deprecated the old `request` method name but not removed it as
yet. There's also opportunity now to reduce the 'read/write' functions
further as they essentially do the same thing. Again we've left this for
the moment, but we are hoping to get the code for our custom Adapter down
to less than 100 LoC.
2020-05-12 17:13:50 +00:00
John Cowen 604de8758b
ui: Fix using 'ui-like' KVs when using an empty default nspace (#7734)
When using namespaces, the 'default' namespace is a little special in
that we wanted the option for all our URLs to stay the same when using
namespaces if you are using the default namespace, with the option of
also being able to explicitly specify `~default` as a namespace.

In other words both `ui/services/service-name` and
`ui/~default/services/service-name` show the same thing.

This means that if you switch between OSS and Enterprise, all of your
URLs stay the same, but you can still specifically link to the default
namespace itself.

Our routing configuration is duplicated in order to achieve this:

```
- :dc
  - :service
  - :kv
    - :edit
- :nspace
  - :dc
    - :service
    - :kv
      - :edit
```

Secondly, ember routing resolves/matches routes in the order that you specify
them, unless, its seems, when using wildcard routes, like we do in the
KV area.

When not using the wildcard routes the above routing configuration
resolves/matches a `/dc-1/kv/service` to the `dc.kv.edit` route correctly
(dc:dc-1, kv:services), that route having been configured in a higher
priority than the nspace routes.

However when configured with wildcards (required in the KV area), note
the asterisk below:

```
- :dc
    :service
  - :kv
    - *edit
- :nspace
  - :dc
    - :service
    - :kv
      - *edit
```

Given something like `/dc-1/kv/services` the router instead matches the
`nspace.dc.service` (nspace:dc-1, dc:kv, service:services) route first even
though the `dc.kv.edit` route should still match first.
Changing the `dc.kv.edit` route back to use a non-wildcard route
(:edit instead of *edit), returns the router to match the routes in the
correct order.

In order to work around this, we catch any incorrectly matched routes
(those being directed to the nspace Route but not having a `~`
character in the nspace parameter), and then recalculate the correct
route name and parameters. Lastly we use this recalculated route to
direct the user/app to the correct route.

This route recalcation requires walking up the route to gather up all of
the required route parameters, and although this feels like something
that could already exist in ember, it doesn't seem to. We had already
done a lot of this work a while ago when implementing our `href-mut`
helper. This commit therefore repurposes that work slighlty and externalizes
it outside of the helper itself into a more usable util so we can import
it where we need it. Tests have been added before refactoring it down
to make the code easier to follow.
2020-04-30 09:28:20 +01:00
John Cowen 04a8a77365
ui: Lazily detect HTTP protocol (#7644)
This commit includes 2 things:

1. Sometimes (seemingly due to client caching), performance entries
aren't available, even for the currently executing script. This waits
until the first retrieval of 'CONSUL_HTTP_PROTOCOL' before using the
performance entries to decide this. This means that the entries aren't
inspected until ember has initialized, which means that the entries are
always available.

2. getCurrentResource/getResourceFor could potentially return undefined
if the correct entry could not be found. This adds a default {} return
value if the resource cannot be found. This means that if for whatever
reason the correct resource cannot be found at least we don't fail with
an error and just drop back to HTTP/1 functionality.
2020-04-15 14:42:55 +01:00
John Cowen 8d4631526c
ui: Fix token duplication bug (#7552)
We need to detect whether an object is an ember-data snapshot or just a
plain object, and we where restricted from using `instanceof` due to
ember-data's `Snapshot` class being private.

We'd chosen to go with `constructor.name` instead, which seemed to work,
but when the javascript gets minifed the name of the contructor is also
minified and therefore is not what you are expecting.

This commit reverts to our original idea of checking for the existence
and type of the `.attributes` function, which is the function we require
within the conditional, and therefore is more reliable (if the function
doesn't exist it will error out during development aswell as production)
2020-04-01 09:55:20 +01:00
John Cowen 6ffe0e6fe4
ui: Use the `each key=""` parameter to force ember to reuse DOM (#7550)
Ember tries to reuse DOM elements when it can but as ember looks for
changes to objects rather than the DOM itself sometimes. This and the
fact that an objects identity may change even though its value hasn't,
results in ember occasionally re-mutating DOM when it doesn't need to.

The `each` helper includes a `key` attribute to hint to ember what it
should look for when deciding whether something has changed, rather than
the objects identity.

https://api.emberjs.com/ember/release/classes/Ember.Templates.helpers/methods/each#specifying-keys

We use this here to fix an issue where DOM was being redrawn after the
user had scrolled the page and was therefore resetting the scroll back
to 0 (the top of the page)
2020-03-31 14:58:59 +01:00
John Cowen 31b9b90bc3
ui: Ensure blocking query configuration is passed through to findInstanceBySlug (#7543)
* ui: Ensure configuration is passed through to findInstanceBySlug

Due to the addition of namespace support, this arguments passed to this
method have been increased. Whilst the nspace support continues ot work
here, the configuration for blocking queries is never passed through.
This results in a 2 second poll rather than a blocking query.

This commit fixes that

* ui: Add a basic test to check the number of arguments passed through
2020-03-30 15:23:06 +01:00
John Cowen 5f625666b4
ui: Enable recovery from an unreachable datacenter (500 error) (#7404)
For URL maintenance reasons we store the last visited DC in
localStorage incase you come back to a page (for example settings) that
doesn't have a dc in the URL.

A problem arises here if the last DC you tried to visit is unreachable.

The first fix here clears out the last visited DC from localStorage if
the API has errored out.

Secondly, our `href-mut` helper which mutates the current current and
replaces 'parts' in the URL rather than the whole thing functioned by
detecting the current route/URL you are on an 'mutating' that. A problem
arose here as even though you might be on the `/ui/dc-1/services` URL the
actual route is the 'error' route which does not have a URL that can be
changed properly.

The second fix here uses route.currentRoute.name over route.currentRouteName.

The latter is equal to error when an error occurs whereas the former gives you the name of the route before the error happened, which is actually what we want/the intent here.

ie. when `router.currentRouteName === 'error'` then
`router.currentRoute.name === Name Of Route Before It Errored` it seems
2020-03-09 09:10:47 +00:00
John Cowen 6074a1b4c8
ui: Coordinates don't require a nspace, so don't expect one in the repo (#7378)
* ui: Coordinates don't require a nspace, so don't expect one in the repo

* Add a test to prove the correct number of arguments are being passed
2020-03-04 18:12:47 +00:00
John Cowen 468e82dcf9
ui: Alter position of logic for showing the Round Trip Time tab to prevent DOM refresh (#7377)
* ui: Move tomography length check inside of the partial

Previously we checked the length of tomography.distances to decide
whether to show the RTT tab or not. Previous to our ember upgrade this
would not cause a DOM reload of so many elements (i.e. all of the tab
content). Since our ember upgrade, any change to tomography (so not
necessarily the length of distances) seems to fire a change to the length (even if
the length remains the same). The knock on effect of this is that the
array of tab panels seems to be recalculated (but remain the same) and
all of the tab panels are completely re-rendered, causing the scroll of
the page to be reset.

This commit moves the check for tomography.distance.length to the lower
down with the loop, which means the array of tab panels always remains
the same, which consequently means that the entire array of tab panels
is never re-rendered entirely, and therefore fixes the issue.
2020-03-04 18:12:27 +00:00
John Cowen 74ade640e3
ui: Use WithEventSource mixin on intentions to ensure cleanup (#7333)
The WithEventSource mixin has a reset method when the Controller is
exited which will close any open EventSources/Blocking queries.

This adds it in for intentions
2020-02-21 14:00:33 +00:00
John Cowen e85fd18f89
ui: Be more specific with the display toggling checkboxes (#7309) 2020-02-18 17:05:45 +00:00
John Cowen b83c190f0c
ui: Use options.method for keying not options.type (#7308) 2020-02-18 14:03:27 +00:00
John Cowen 65dd14daf3
ui: Gracefully cope with 500 errors from the disco-chain API endpoint (#7291)
When connect is disabled the discovery-chain endpoint returns a 500
error status, which we previoulsy did not gracefully cope with.

This commit gracefully copes with any errors from the disco-chain
endpoint by supressing the error and hiding the Routing tab from the
Service detail page.

Acceptance test included
2020-02-14 14:46:16 +00:00
John Cowen ebc574c509
ui: oss don't ever POST/PUT Namespaces when writing data (#7238)
* ui: Ensure we use nonEmptySet everywhere where we add Namespace

We missed a coupld of places where we use the noEmptySet function, which
will only perform the set if the specified property is non-empty.

Currently we aren't certain there is a place in OSS where a Namespace
can make its way down via the API and endup being PUT/POSTed back out
again when saved. If this did ever happen we would assume it would be
the default namespace, but we add an extra check here to ensure we never
PUT/POST the Namespace property if Namespaces are disabled.

* ui: Add step/assertion for assert if a property is NOT set in the body

* ui: Improve updated/create acc testing for policy/token/roles:

Including making sure a Namespace property is never sent through if you
are running without namespace support
2020-02-07 15:50:50 +00:00
John Cowen eb35d89893
ui: Run 2 separate test runs oss and ent (#7214)
* ui: Make API integration tests aware of CONSUL_NSPACES_ENABLED

* ui: Allow passing CONSUL_NSPACES_ENABLED in via the cli in ember

* ui: Add more makefile targets/package scripts to switch NSPACEs on/off

* ui: Ensure all acceptance tests continue to pass with NSPACEs on/off

This required a little tweaking of the dictionary, at some point
page-navigation and some of these little tweaks will no longer be
required

* ui: Try running CI frontend tests in two parellel runs oss/ent

* ui: Use correct make target, use different names for the reports
2020-02-07 11:02:53 +00:00
John Cowen 9e186c7af8
ui: Fix for differences between uncompiled and compiled CSS (#7233)
We noticed that this relative positioning is not even applied when the CSS is
compiled/compressed. When looking via Web Inspector this style/selector
doesn't even appear even though it is in the CSS source.

This !important reduces the amount of selectors for this style rule,
which fixes the error, so potentially this isn't a specificity thing.
2020-02-06 20:13:13 +00:00
John Cowen ad3b5327d2
ui: Discovery chain improvements (#7222)
* ui: remove the default word when describing routes

* ui: Avoid mutating the chain and look for the default edges more safely

* ui: Use not null check instead of a truthy check for showing disco-chain

* ui: Upgrade consul-api-double for better disco-chain mocks/fixtures
2020-02-06 12:06:47 +00:00
John Cowen 279cd874cc
ui: Ensure KV flags are passed through to Consul on update (#7216)
* ui: always pass KV flags through on update

* ui: Integration test to prove the flags queryParams gets passed through

* ui: Add Flags to the KV updating acceptance tests
2020-02-05 09:37:45 +00:00
Kenia 773b092a64
ui: Add ability to search nodes listing page with IP Address (#7204)
* Update search field placeholder to display `Search`

* Add an acceptance test to search node listings with node name and IP Address

* Update and add unit tests for filter/search node listing with IP Address
2020-02-04 10:45:25 -05:00
Kenia c706089c9f
ui: Hides the Routing tab for a service proxy (#7195)
* Adds conditional in route to not make discovery-chain request if service kind is equal to `connect-proxy` or `mesh-gateway`

* Adds conditional in template to not show Routing tab if `chain` returns as null

* Creates a new acceptance test to test the Routing tab not being displayed for a service proxy

* Adds `tabs` to the services/show page object
2020-02-03 10:09:15 -05:00
Kenia b9e023dfe1
ui: Adds an acceptance test for hiding Blocking Queries (#7162)
* Adds an acceptance test for hiding Blocking Queries

* Creates a new scenario - If a user adds CONSUL_UI_DISABLE_REALTIME to localStorage, the Blocking Queries section is hidden.

* Updates page assertion to accept functions and booleans as properties

* ui: Fix "don't see" step to watch for the different pageObject error

ember-cli-page object seems to throw a an error with a different message
depending on how you call a function:

currentPage()[property]() // message = 'Element not found'

const prop = currentPage()[property];
prop() // message = 'Something about destructuring'

This changes the step/test/assertion to ensure we check for both types of errors

Co-authored-by: John Cowen <johncowen@users.noreply.github.com>
2020-01-31 10:12:22 -05:00
John Cowen f45880bffe
ui: Fix sticky nspace menu (#7164)
* ui: Fix typo expanded > ariaExpanded

* ui: Add the things we need to test this

* ui: Add tests for testing the menu closes when clicked

* ui: Ensure the aria-menu closes on route change
2020-01-31 14:11:46 +00:00
John Cowen a8504802db
ui: Split splitter names in the discovery-chain (#7180)
Previous to 1.7 splitter names didn't include the namespace name

i.e. 'service-name'

as of 1.7 they now include the namespace

i.e. 'service-name.namespace'

This commit take account of that
2020-01-30 19:08:45 +00:00
John Cowen 3eec5edadf
ui: Discovery-Chain: Cope with some edge case configs (#7174)
* 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
2020-01-30 16:09:05 +00:00
John Cowen ac60338269
ui: Add live updates/blocking queries to the Intention listing page (#7161)
* ui: Enable blocking queries/live updates for intentions

* ui: Add acceptance tests for intention blocking queries

* ui: Add copy to explain that intentions are also now 'real time'
2020-01-29 16:22:31 +00:00
John Cowen d47f1ca2a9
ui: Fix wrapping service ids in the Node Detail > Services tab (#7149) 2020-01-28 14:43:32 +00:00
John Cowen c6e72c3e46
ui: Fix positioning of active icon in the selected menu item (#7148) 2020-01-28 14:42:20 +00:00
Kenia ff315c95fd
ui: Implements the ember-page-title addon to the UI (#7118)
* Installs ember-page-title 5.x

* Adds a page title to all template files that need one

* Adds an assertion step to test the page titles
2020-01-28 09:25:52 -05:00
John Cowen 1ff8678df7
ui: Remove the Policy/Service Identity selector from nspaces (#7124)
When editing Nspaces, although you can assign policies to a nspace using
PolicyDefaults you cannot assign a Service Identity to a policy like you
can when adding a policy to a token.

This commit adds an extra attribute to our policy-form/policy-selector
component so you can disable this setting. At a later date we may change
this to have a conficgurable `<Slot />` instead.

Simple acceptance tests is included here
2020-01-28 09:39:09 +00:00
John Cowen 327aac9fe9
ui: Acceptance test improvements to prepare for more NS tests (#6980)
* ui: Acceptance test improvements to prepare for more NS tests

* ui: Namespace acceptance testing (#7005)

* Update api-double and consul-api-double for http.body

* Adds places where we missed passing the nspace through

* Hardcode nspace CRUD to use the default nspace for policies and roles

* Alter test helpers to allow us to control nspaces from the outside

* Amends to allow tests to account for namespace, move ns from queryParam

1. We decided to move how we pass the namespace value through to the
backend when performing write actions (create, update). Previoulsy we
were using the queryParam although using the post body is the preferred
method to send the Namespace details through to the backend.
2. Other various amends to take into account testing across multiple
namespaced scenarios

* Enable nspace testing by default

* Remove last few occurances of old style http assertions

We had informally 'deprecated' our old style of http assertions that
relied on the order of http calls (even though that order was not
important for the assertion). Following on from our namespace work we
removed the majority of the old occrances of these old style assertions.

This commit removes the remaining few, and also then cleans up the
assertions/http.js file to only include the ones we are using.

This reduces our available step count further and prevents any confusion
over the usage of the old types and the new types.

* ui: Namespace CRUD acceptance tests (#7016)

* Upgrade consul-api-double

* Add all the things required for testing:

1. edit and index page objects
2. enable CONSUL_NSPACE_COUNT cookie setting
3. enable mutating HTTP response bodies based on URL

* Add acceptance test for nspace edit/delete/list and searching
2020-01-24 12:26:28 +00:00
Kenia b836a772fc
ui: Checks env CONSUL_UI_DISABLE_REALTIME to show/hide blocking queries toggle (#7099)
Adds a conditional that checks env CONSUL_UI_DISABLE_REALTIME to show/hide the Blocking Queries toggle in the Settings page.
2020-01-22 09:19:01 -05:00
John Cowen afafe677a3
ui: New Confirmation Dialogs (#7007)
* ui: Change action-group to use new popup-menu component in intentions

* ui: Slight amends to aria-menu to prevent scrolling

* ui: Begin to use aria-menu/popover-menu for other elements

* Use a simpler, hackier method to fix up zIndexing

* ui: Implement new confirmation dialogs in other list views (#7080)

This includes another amend to the popover-menu in order to allow
mutiple confirmations/subpanels in the same popover menu.

The functionality added here to allow this is likely to change in the
future.
2020-01-22 12:08:29 +00:00
John Cowen a65d941e76
ui: Improve configuration/env/feature flag usage (also add build time year detection) (#7072)
* Add new getEnvironment util/function

* Use new-ish `env` function in all the places

* Clean up ember env file, add year detection from commit date
2020-01-21 17:52:40 +00:00
John Cowen ac613993bb
ui: Keyboard navigation improvements (#7090)
* ui: Improve keyboard access for some custom components

* ui: Add some accessibility related metadata
2020-01-20 14:15:15 +00:00
John Cowen e15d1466aa
ui: Discovery Chain Improvements (#7036)
* 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
2020-01-16 16:31:09 +00:00
John Cowen 13eb536e24
ui: Use structure-icons as much as possible (#6851)
* ui: Delete a bunch of CSS that we recently moved elsewhere

* ui: Add some masking placeholders

* Switch out hashicorp logo for one from structure-icons

* Change copy-button to use new copy-action icon

* Change secret-button to use new visibility-hide/show icons

* New folder icon for KVs

* Cleanup some of the icons we no longer use

* Switch from %with-exit to standard-like %with-exit-icon

* Move all chevrons to use structure-icons properly

* Use star-fill as much as possible

* Remove the remaining icons from icons/index plus the file itself
2020-01-16 09:10:32 +00:00
John Cowen 06d09d11f1
ui: Move slots to use attributes over positional params (#7032)
* Change all instances of yield/block-slots to use attributes over positional arguments

* Remove the ability to use yield/block-slots with positional params
2020-01-15 09:15:54 +00:00
John Cowen 99fae9d65a
ui: Make sure that the namespace is passed when changing a token via [Use] (#6973)
* Pass the namespace parameter through to the repo when using a token
* Refresh the namespace menu when somebody [Use]s a token
2019-12-20 14:57:10 +00:00
John Cowen 18bafaec35
ui: Cope with the possibility of receiving no namespaces (#6975) 2019-12-20 14:56:18 +00:00
John Cowen b2c0c08e08
Ensure ember-data ids are created correct taking into account the nspace (#6974) 2019-12-20 14:30:19 +00:00
John Cowen 36728b961f
ui: Various amends for 1.7beta (#6965)
* Remove empty init

* Actually make the disco chain endpoint send the nspace, note:

The backend doesn't support this as yet.

* Tweak the font size of flash-messages ever so slightly

* Make sure the nspace menu is kept up to date when creating a new one

* Move comment to the correct place

* Only refresh the namespace menu if you specifically created a nspace

* Change FIXMEs to TODOs as we are happy for these to wait until later
2019-12-18 18:27:54 +00:00
John Cowen aa680d5f0c ui: Discovery Chain (#6746)
* 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
2019-12-18 12:26:47 +00:00
John Cowen 7044aa52c8 ui: Namespace Support (#6639)
Adds namespace support to the UI:

1. Namespace CRUD/management
2. Show Namespace in relevant areas (intentions, upstreams)
3. Main navigation bar improvements
4. Logic/integration to interact with a new `internal/acl/authorize` endpoint
2019-12-18 12:26:47 +00:00