A data race was introduced in #9919 when the old synchronous storage
API was replaced with an async storage API. The problem arises when
`fetchWithCache` is called a second time while it's still processing
another call. In this case, the `cachedFetch` object can become
stale while blocked waiting for a fetch response, and result in a cache
being overwritten unintentionally.
See this example (options omitted for simplicity, and assuming an empty
initial cache):
```
await Promise.all([
fetchWithCache('https://metamask.io/foo'),
fetchWithCache('https://metamask.io/bar'),
]
```
The order of events could be as follows:
1. Empty cache retrieved for `/foo` route
2. Empty cache retrieved for `/bar` route
3. Call made to `/foo` route
4. Call made to `/bar` route
5. `/foo` response is added to the empty cache object retrieved in
step 1, then is saved in the cache.
6. `/bar` response is added to the empty cache object retrieved in
step 2, then is saved in the cache.
In step 6, the cache object saved would not contain the `/foo`
response set in step 5. As a result, `/foo` would never be cached.
This problem was resolved by embedding the URL being cached directly in
the cache key. This prevents simultaneous responses from overwriting
each others caches.
Technically a data race still exists when handing simultaneous
responses to the same route, but the result would be that the last call
to finish would overwrite the previous. This seems acceptable.
A data race was introduced in #9919 when the old synchronous storage
API was replaced with an async storage API. The problem arises when
`fetchWithCache` is called a second time while it's still processing
another call. In this case, the `cachedFetch` object can become
stale while blocked waiting for a fetch response, and result in a cache
being overwritten unintentionally.
See this example (options omitted for simplicity, and assuming an empty
initial cache):
```
await Promise.all([
fetchWithCache('https://metamask.io/foo'),
fetchWithCache('https://metamask.io/bar'),
]
```
The order of events could be as follows:
1. Empty cache retrieved for `/foo` route
2. Empty cache retrieved for `/bar` route
3. Call made to `/foo` route
4. Call made to `/bar` route
5. `/foo` response is added to the empty cache object retrieved in
step 1, then is saved in the cache.
6. `/bar` response is added to the empty cache object retrieved in
step 2, then is saved in the cache.
In step 6, the cache object saved would not contain the `/foo`
response set in step 5. As a result, `/foo` would never be cached.
This problem was resolved by embedding the URL being cached directly in
the cache key. This prevents simultaneous responses from overwriting
each others caches.
Technically a data race still exists when handing simultaneous
responses to the same route, but the result would be that the last call
to finish would overwrite the previous. This seems acceptable.
Additional validation was added in #9907 to ensure that the "Known
contract address" warning was shown when sending tokens to another
token address after switching assets on the Send screen. Unfortunately
this change had the unintended side-effect of preventing _all_ token
sends after switching assets, so long as the recipient was not an
internal address.
The problem is that the `validate` function expects to be passed the
address of the token send recipient in the case where a token is
selected. Instead the token address was being passed to the validate
function.
The `query` state is now used, which should always contain the
recipient address. This is the same state used in the only other place
the `validate` function is called.
Additional validation was added in #9907 to ensure that the "Known
contract address" warning was shown when sending tokens to another
token address after switching assets on the Send screen. Unfortunately
this change had the unintended side-effect of preventing _all_ token
sends after switching assets, so long as the recipient was not an
internal address.
The problem is that the `validate` function expects to be passed the
address of the token send recipient in the case where a token is
selected. Instead the token address was being passed to the validate
function.
The `query` state is now used, which should always contain the
recipient address. This is the same state used in the only other place
the `validate` function is called.
The TokenList component on the `add-token` page had the name `InfoBox`,
which doesn't seem applicable. It has been renamed to `TokenList`, to
match the module filename and the component name we use elsewhere.
The `errors` and `total` state has been removed from the `gas` slice,
along with related functions. It appears to have been unused for a long
time, though I'm not exactly sure as of when.
* Remove use of ethgassthat; use metaswap /gasPrices api for gas price estimates
* Remove references to ethgasstation
* Pass base to BigNumber constructor in fetchExternalBasicGasEstimates
* Update ui/app/hooks/useTokenTracker.js
Co-authored-by: Erik Marks <25517051+rekmarks@users.noreply.github.com>
* Delete gas price chart
* Remove price chart css import
* Delete additional fee chart code
* Lint fix
* Delete more code no longer used after ethgasstation removal
Co-authored-by: Erik Marks <25517051+rekmarks@users.noreply.github.com>
Our Storybook dependencies have been updated to v6.1.9, from v5. This
was done to address a security vulnerability in a transitive dependency
of these packages (`highlight.js`).
The primary changes required by this Storybook update were the change
in import path for the `withKnobs` hook, the change in background
config format, and the webpack configuration. Storybook seems to work
correctly.
The migration was guided by the Storybook changelog[1] and the
Storybook v6 migration guide[2].
There is one Storybook error remaining; it fails to load the Euclid
font. This is a pre-existing error though, so we can fix it in a later
PR.
The `yarn.lock` file was deduplicated in this PR as well, as it was
required to fix various install warnings that were introduced with this
update.
[1]: https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md
[2]: https://github.com/storybookjs/storybook/blob/next/MIGRATION.md
* Validate sendToken address when component updates
On a reproduction of trying to get the error message it seems that if an token address is provided in the address form with ETH selected then changing to a token address, the error message won't show.
This will validate the sendtoken address on prop change to properly update the warning message.
* Update test to include second doesAmountErrorRequireUpdate call when state is updated and component is updated
This fixes a PropType error when using non-custom slippage, and it
fixes a type inconsistency when custom slippage is used.
Previously, `slippage` was being converted explicitly to a `Number` as
it was passed into `BuildQuote`, but not as it was passed into
`AwaitingSwap`. Also the PropType was set as `string`, despite the fact
that it's a number in most cases, and is used for math.
The PropType has been changed to `number`, and the selective casting to
`Number` has been removed. Instead, the `maxSlippage` value is cast to
a `Number` as it's being selected, so that the type is always
consistent.
* Revert "Update fee card designs to show savings and MM fee (#9629)"
This reverts commit d9924ca771.
* Revert "Update main-quote-summary designs/styles (#9612)"
This reverts commit 5456d55c88.
* Add token verification message to swaps build quote screen
* Adds description for locale
* Use <a> tag for etherscan link
* Remove unnecessary span
* Update ui/app/pages/swaps/build-quote/build-quote.js
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
David Walsh
Mark Stacey
Brad Decker
Nicholas Rodrigues Lordello
Erik Marks
Dan J Miller
Thomas Huang