Commit Graph

115 Commits

Author SHA1 Message Date
David Overton
9921823915 GDC-189 custom aggregations
>

## Description
->

This PR allows DC agents to define custom aggregate functions for their scalar types.

### Related Issues
->

GDC-189

### Solution and Design
>

We added a new property `aggregate_functions` to the scalar types capabilities. This allows the agent author to specify a set of aggregate functions supported by each scalar type, along with the function's result type.

During GraphQL schema generation, the custom aggregate functions are available via a new method `getCustomAggregateOperators` on the `Backend` type class.
Custom functions are merged with the builtin aggregate functions when building GraphQL schemas for table aggregate fields and for `order_by` operators on array relations.

### Steps to test and verify
>

• Codec tests for aggregate function capabilities have been added to the unit tests.
• Some custom aggregate operators have been added to the reference agent and are used in a new test in `api-tests`.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/6199
GitOrigin-RevId: e9c0d1617af93847c1493671fdbb794f573bde0c
2022-10-27 00:44:06 +00:00
Vamshi Surabhi
a01d1188f2 scaffolding for remote-schemas module
The main aim of the PR is:

1. To set up a module structure for 'remote-schemas' package.
2. Move parts by the remote schema codebase into the new module structure to validate it.

## Notes to the reviewer

Why a PR with large-ish diff?

1. We've been making progress on the MM project but we don't yet know long it is going to take us to get to the first milestone. To understand this better, we need to figure out the unknowns as soon as possible. Hence I've taken a stab at the first two items in the [end-state](https://gist.github.com/0x777/ca2bdc4284d21c3eec153b51dea255c9) document to figure out the unknowns. Unsurprisingly, there are a bunch of issues that we haven't discussed earlier. These are documented in the 'open questions' section.

1. The diff is large but that is only code moved around and I've added a section that documents how things are moved. In addition, there are fair number of PR comments to help with the review process.

## Changes in the PR

### Module structure

Sets up the module structure as follows:

```
Hasura/
  RemoteSchema/
    Metadata/
      Types.hs
    SchemaCache/
      Types.hs
      Permission.hs
      RemoteRelationship.hs
      Build.hs
    MetadataAPI/
      Types.hs
      Execute.hs
```

### 1. Types representing metadata are moved

Types that capture metadata information (currently scattered across several RQL modules) are moved into `Hasura.RemoteSchema.Metadata.Types`.

- This new module only depends on very 'core' modules such as
  `Hasura.Session` for the notion of roles and `Hasura.Incremental` for `Cacheable` typeclass.

- The requirement on database modules is avoided by generalizing the remote schemas metadata to accept an arbitrary 'r' for a remote relationship
  definition.

### 2. SchemaCache related types and build logic have been moved

Types that represent remote schemas information in SchemaCache are moved into `Hasura.RemoteSchema.SchemaCache.Types`.

Similar to `H.RS.Metadata.Types`, this module depends on 'core' modules except for `Hasura.GraphQL.Parser.Variable`. It has something to do with remote relationships but I haven't spent time looking into it. The validation of 'remote relationships to remote schema' is also something that needs to be looked at.

Rips out the logic that builds remote schema's SchemaCache information from the monolithic `buildSchemaCacheRule` and moves it into `Hasura.RemoteSchema.SchemaCache.Build`. Further, the `.SchemaCache.Permission` and `.SchemaCache.RemoteRelationship` have been created from existing modules that capture schema cache building logic for those two components.

This was a fair amount of work. On main, currently remote schema's SchemaCache information is built in two phases - in the first phase, 'permissions' and 'remote relationships' are ignored and in the second phase they are filled in.

While remote relationships can only be resolved after partially resolving sources and other remote schemas, the same isn't true for permissions. Further, most of the work that is done to resolve remote relationships can be moved to the first phase so that the second phase can be a very simple traversal.

This is the approach that was taken - resolve permissions and as much as remote relationships information in the first phase.

### 3. Metadata APIs related types and build logic have been moved

The types that represent remote schema related metadata APIs and the execution logic have been moved to `Hasura.RemoteSchema.MetadataAPI.Types` and `.Execute` modules respectively.

## Open questions:

1. `Hasura.RemoteSchema.Metadata.Types` is so called because I was hoping that all of the metadata related APIs of remote schema can be brought in at `Hasura.RemoteSchema.Metadata.API`. However, as metadata APIs depended on functions from `SchemaCache` module (see [1](ceba6d6226/server/src-lib/Hasura/RQL/DDL/RemoteSchema.hs (L55)) and [2](ceba6d6226/server/src-lib/Hasura/RQL/DDL/RemoteSchema.hs (L91)), it made more sense to create a separate top-level module for `MetadataAPI`s.

   Maybe we can just have `Hasura.RemoteSchema.Metadata` and get rid of the extra nesting or have `Hasura.RemoteSchema.Metadata.{Core,Permission,RemoteRelationship}` if we want to break them down further.

1. `buildRemoteSchemas` in `H.RS.SchemaCache.Build` has the following type:

   ```haskell
   buildRemoteSchemas ::
     ( ArrowChoice arr,
       Inc.ArrowDistribute arr,
       ArrowWriter (Seq CollectedInfo) arr,
       Inc.ArrowCache m arr,
       MonadIO m,
       HasHttpManagerM m,
       Inc.Cacheable remoteRelationshipDefinition,
       ToJSON remoteRelationshipDefinition,
       MonadError QErr m
     ) =>
     Env.Environment ->
     ( (Inc.Dependency (HashMap RemoteSchemaName Inc.InvalidationKey), OrderedRoles),
       [RemoteSchemaMetadataG remoteRelationshipDefinition]
     )
       `arr` HashMap RemoteSchemaName (PartiallyResolvedRemoteSchemaCtxG remoteRelationshipDefinition, MetadataObject)
   ```

   Note the dependence on `CollectedInfo` which is defined as

   ```haskell
   data CollectedInfo
     = CIInconsistency InconsistentMetadata
     | CIDependency
         MetadataObject
         -- ^ for error reporting on missing dependencies
         SchemaObjId
         SchemaDependency
     deriving (Eq)
   ```

   this pretty much means that remote schemas is dependent on types from databases, actions, ....

   How do we fix this? Maybe introduce a typeclass such as `ArrowCollectRemoteSchemaDependencies` which is defined in `Hasura.RemoteSchema` and then implemented in graphql-engine?

1. The dependency on `buildSchemaCacheFor` in `.MetadataAPI.Execute` which has the following signature:

   ```haskell
   buildSchemaCacheFor ::
     (QErrM m, CacheRWM m, MetadataM m) =>
     MetadataObjId ->
     MetadataModifier ->
   ```

   This can be easily resolved if we restrict what the metadata APIs are allowed to do. Currently, they operate in an unfettered access to modify SchemaCache (the `CacheRWM` constraint):

   ```haskell
   runAddRemoteSchema ::
     ( QErrM m,
       CacheRWM m,
       MonadIO m,
       HasHttpManagerM m,
       MetadataM m,
       Tracing.MonadTrace m
     ) =>
     Env.Environment ->
     AddRemoteSchemaQuery ->
     m EncJSON
   ```

   This should instead be changed to restrict remote schema APIs to only modify remote schema metadata (but has access to the remote schemas part of the schema cache), this dependency is completely removed.

   ```haskell
   runAddRemoteSchema ::
     ( QErrM m,
       MonadIO m,
       HasHttpManagerM m,
       MonadReader RemoteSchemasSchemaCache m,
       MonadState RemoteSchemaMetadata m,
       Tracing.MonadTrace m
     ) =>
     Env.Environment ->
     AddRemoteSchemaQuery ->
     m RemoteSchemeMetadataObjId
   ```

   The idea is that the core graphql-engine would call these functions and then call
   `buildSchemaCacheFor`.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/6291
GitOrigin-RevId: 51357148c6404afe70219afa71bd1d59bdf4ffc6
2022-10-21 03:15:04 +00:00
Brandon Simmons
823babe885 server: switch to ghc 9.2 (2nd try)
## Migrating, for server devs

You will need the fork of 9.2.4 that we're using (for now):

```
ghcup -c -n install ghc --force -u "https://storage.googleapis.com/graphql-engine-cdn.hasura.io/ghc-bindists/ghc-x86_64-deb10-linux-9.2.4-hasura-fix.tar.xz" 9.2.4
```

or for m1 mac:

```
ghcup -c -n install ghc --force -u  "https://storage.googleapis.com/graphql-engine-cdn.hasura.io/ghc-bindists/ghc-arm64-apple-darwin-9.2.4-hasura-fix.tar.xz"
```

Samir is working on a nix build for nix folx

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/6154
GitOrigin-RevId: 6716e3f2ee19f0281c8ad25383a1241fc362d616
2022-10-06 09:09:01 +00:00
Auke Booij
05b3a64e8f Clean up Hasura.Prelude a bit
- Remove `onJust` in favor of the more general `for_`
- Remove `withJust` which was used only once
- Remove `hashNub` in favor of `Ord`-based `uniques`
- Simplify some of the implementations in `Hasura.Prelude`
- Add `hlint` hint from `maybe True` to `all`, and `maybe False` to `any`

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/6173
GitOrigin-RevId: 2c6ebbe2d04f60071d2a53a2d43c6d62dbc4b84e
2022-10-03 21:50:53 +00:00
Auke Booij
4c8ea8e865 Import pg-client-hs as PG
Result of executing the following commands:
```shell
# replace "as Q" imports with "as PG" (in retrospect this didn't need a regex)
git grep -lE 'as Q($|[^a-zA-Z])' -- '*.hs' | xargs sed -i -E 's/as Q($|[^a-zA-Z])/as PG\1/'
# replace " Q." with " PG."
git grep -lE ' Q\.' -- '*.hs' | xargs sed -i 's/ Q\./ PG./g'
# replace "(Q." with "(PG."
git grep -lE '\(Q\.' -- '*.hs' | xargs sed -i 's/(Q\./(PG./g'
# ditto, but for [, |, { and !
git grep -lE '\[Q\.' -- '*.hs' | xargs sed -i 's/\[Q\./\[PG./g'
git grep -l '|Q\.' -- '*.hs' | xargs sed -i 's/|Q\./|PG./g'
git grep -l '{Q\.' -- '*.hs' | xargs sed -i 's/{Q\./{PG./g'
git grep -l '!Q\.' -- '*.hs' | xargs sed -i 's/!Q\./!PG./g'
```
(Doing the `grep -l` before the `sed`, instead of `sed` on the entire codebase, reduces the number of `mtime` updates, and so reduces how many times a file gets recompiled while checking intermediate results.)

Finally, I manually removed a broken and unused `Arbitrary` instance in `Hasura.RQL.Network`. (It used an `import Test.QuickCheck.Arbitrary as Q` statement, which was erroneously caught by the first find-replace command.)

After this PR, `Q` is no longer used as an import qualifier. That was not the goal of this PR, but perhaps it's a useful fact for future efforts.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5933
GitOrigin-RevId: 8c84c59d57789111d40f5d3322c5a885dcfbf40e
2022-09-20 19:55:51 +00:00
Jesse Hallett
b094947239 server: codecs for TableMetadata, FunctionMetadata, and permissions
This PR expands the set of codecs for source metadata to include `TableMetadata`, `FunctionMetadata`, and various permission types. This fills out more detail in the generated OpenAPI document.

See the [generated OpenAPI spec](https://gist.github.com/hallettj/783d06a926cbc854eececa4964e8aa5b) based on this PR.

See also the
[generated TypeScript types](https://github.com/hasura/graphql-engine-mono/files/9448102/client-typescript.tar.gz) based on that spec.

Ticket: https://hasurahq.atlassian.net/browse/MM-66

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5664
GitOrigin-RevId: b6e1f32c669368cd6150e6f69fc36b78b748d9bb
2022-09-12 20:31:07 +00:00
Tom Harding
70515d94c7 Extract Hasura.Prelude from src-lib
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5776
GitOrigin-RevId: 0df263a4d800e694e68e31c189c360c88cf48abc
2022-09-09 13:58:48 +00:00
David Overton
00aeb57adf Add data connector agent capabilities schema cache
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5689
GitOrigin-RevId: 86e18e92106e5e5b6543f17fc21e2ab65bdd69ed
2022-09-01 05:29:04 +00:00
Jesse Hallett
84fd5910b0 server: polymorphic codec for metadata sources
This PR expands the OpenAPI specification generated for metadata to include separate definitions for `SourceMetadata` for each native database type, and for DataConnector.

For the most part the changes add `HasCodec` implementations, and don't modify existing code otherwise.

The generated OpenAPI spec can be used to generate TypeScript definitions that distinguish different source metadata types based on the value of the `kind` properly. There is a problem: because the specified `kind` value for a data connector source is any string, when TypeScript gets a source with a `kind` value of, say, `"postgres"`, it cannot unambiguously determine whether the source is postgres, or a data connector. For example,

```ts
function consumeSourceMetadata(source: SourceMetadata) {
    if (source.kind === "postgres" || source.kind === "pg") {
        // At this point TypeScript infers that `source` is either an instance
        // of `PostgresSourceMetadata`, or `DataconnectorSourceMetadata`. It
        // can't narrow further.
        source
    }
    if (source.kind === "something else") {
        // TypeScript infers that this `source` must be an instance of
        // `DataconnectorSourceMetadata` because `source.kind` does not match
        // any of the other options.
        source
    }
}
```

The simplest way I can think of to fix this would be to add a boolean property to the `SourceMetadata` type along the lines of `isNative` or `isDataConnector`. This could be a field that only exists in serialized data, like the metadata version field. The combination of one of the native database names for `kind`, and a true value for `isNative` would be enough for TypeScript to unambiguously distinguish the source kinds.

But note that in the current state TypeScript is able to reference the short `"pg"` name correctly!

~~Tests are not passing yet due to some discrepancies in DTO serialization vs existing Metadata serialization. I'm working on that.~~

The placeholders that I used for table and function metadata are not compatible with the ordered JSON serialization in use. I think the best solution is to write compatible codecs for those types in another PR. For now I have disabled some DTO tests for this PR.

Here are the generated [OpenAPI spec](https://github.com/hasura/graphql-engine-mono/files/9397333/openapi.tar.gz) based on these changes, and the generated [TypeScript client code](https://github.com/hasura/graphql-engine-mono/files/9397339/client-typescript.tar.gz) based on that spec.

Ticket: [MM-66](https://hasurahq.atlassian.net/browse/MM-66)

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5582
GitOrigin-RevId: e1446191c6c832879db04f129daa397a3be03f62
2022-08-25 18:36:02 +00:00
paritosh-08
9d23a10f33 server: fix behaviour of custom table name for graphql-default naming convention
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5290
GitOrigin-RevId: bc398989d82a0e78bfcf87d5aa81bcd6a709c67f
2022-08-17 12:47:49 +00:00
Samir Talwar
aa18f65217 server: Move the schema parsers to their own library.
It's about time.

To do this I had to check a few more boxes.

* I copied the flags from `graphql-engine.cabal` to the libraries in `server/lib`.
* I moved `Cacheable` instances of schema parser types beside the typeclass declaration.
* I removed imports of `Hasura.Prelude` from the tests, and rewrote them accordingly.
* I copied the `TestMonad` parse monad into `server/src-test/Hasura/GraphQL/Schema/RemoteTest.hs`, which was using it. I think this could be done with the real thing, but I tried replacing it with constraints and it messed with my head somewhat.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5311
GitOrigin-RevId: ebebcc50a16f2d517b7f730fe72410827ca3e86c
2022-08-05 13:53:39 +00:00
Tom Harding
b85b018108 Remove GEq and GCompare for (:~~:)
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5266
GitOrigin-RevId: 0457b30bf10f1176f3ba7b21d6754dd0c4af75e6
2022-08-01 10:11:16 +00:00
Tom Harding
178e452b6b Use witherable, remove catMaybes/mapMaybe
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5250
GitOrigin-RevId: 5f0a582b3a853d2dbcce20e88c17970290625fc6
2022-07-29 14:53:16 +00:00
Lyndon Maydwell
6821b90910 Moving kriti function references into a single module for coordination of availability
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5095
GitOrigin-RevId: 8394c33f0182baad53306c6efc3ab720957b7339
2022-07-21 07:07:29 +00:00
Evie Ciobanu
187bf385fc remove homebrew NESeq, use vendored
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5094
GitOrigin-RevId: 3342e571d3574a4d94fe3bfedb60f332b8c10853
2022-07-19 08:42:28 +00:00
Evie Ciobanu
d76aab99e1 server: postgres multiple updates
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4837
GitOrigin-RevId: 505f669298298fd004dfc4e84eaa0d21df055216
2022-07-18 15:16:47 +00:00
paritosh-08
84366c9281 server: apply naming convention to prefixing/suffixing for graphql-default
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/5020
GitOrigin-RevId: 145ed4d5dcc352308486fefe9bb7f75f8ed1a84a
2022-07-12 08:34:38 +00:00
kodiakhq[bot]
d8b595575d server: more GHC 9.2 changes compatible with 8.10 (#3550)
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4968
GitOrigin-RevId: 1175b2fcc90e0436c99da7fa58d317a49c7704d4
2022-07-07 16:51:18 +00:00
Jesse Hallett
f4328c3076 server: move ordered Aeson into its own package
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4939
GitOrigin-RevId: 62e83ae7c69f4e0a5334cf1e0c85c22a5d378f59
2022-07-07 15:55:52 +00:00
Samir Talwar
975b022b29 server/parsers: Reduce usages of "utils"-like functions.
This reduces the usage of "utils" modules in the parsers code, especially those that are simply re-exported from elsewhere, to facilitate extracting the parsers code into its own library.

It mostly inlines the imports that are re-exported from `Hasura.Prelude` and `Data.Parser.JSONPath`. It also removes references to `Data.*.Extended` modules. When necessary, it re-implements the functionality (which is typically trivial).

It does not tackle all external dependencies. I observed the following that will take more work:

- `Data.GADT.Compare.Extended`
- `Data.Text.Extended`
- `Hasura.Base.Error`
- `Hasura.RQL.Types.Common`
- `Hasura.Server.Utils`

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4964
GitOrigin-RevId: 54ad3c1b7a31f13e34340ebe9fcc36d0ad57b8bd
2022-07-06 07:56:35 +00:00
Samir Talwar
3fc25a39d3 server: Handle special characters in parseJSONPath and encodeJSONPath.
This improves `parseJSONPath` and `encodeJSONPath` to encode special characters appropriately by delegating to Aeson.

This also makes a couple of improvements to `encodeJSONPath`.

1. The function is moved from `Hasura.Base.Error` to `Data.Parser.JSONPath`. This still doesn't seem too appropriate but it is somewhat better. I am basing this on the fact that its test cases already lived in `Data.Parser.JSONPathSpec`.
2. It now returns `Text`, not `String`.
4. It quotes strings with double quotes (`"`) rather than single quotes (`'`), just like JSON.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4935
GitOrigin-RevId: bf44353cd740500245f2e38907a7d6263ae0291c
2022-07-05 15:53:45 +00:00
Daniel Chambers
b9fb7d8720 Support composite primary keys for Data Connector [GDW-127]
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4926
GitOrigin-RevId: 2b6e5052f56a765e0b9a19345fcc4688d7e4700f
2022-07-01 12:21:17 +00:00
paritosh-08
0c6ddc3666 server: fix typename for custom table name with graphql-default naming convention
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4843
GitOrigin-RevId: 3d61b9d6a893b2a69a6f16bc409242d5ecc3bc8a
2022-07-01 06:12:02 +00:00
Antoine Leblanc
3a400fab3d Rewrite OpenAPI
### Description

This PR rewrites OpenAPI to be more idiomatic. Some noteworthy changes:
- we accumulate all required information during the Analyze phase, to avoid having to do a single lookup in the schema cache during the OpenAPI generation phase (we now only need the schema cache as input to run the analysis)
- we no longer build intermediary endpoint information and aggregate it, we directly build the the `PathItem` for each endpoint; additionally, that means we no longer have to assume that different methods have the same metadata
- we no longer have to first declare types, then craft references: we do everything in one step
- we now properly deal with nullability by treating "typeName" and "typeName!" as different
- we add a bunch of additional fields in the generated "schema", such as title
- we do now support enum values in both input and output positions
- checking whether the request body is required is now performed on the fly rather than by introspecting the generated schema
- the methods in the file are sorted by topic

### Controversial point

However, this PR creates some additional complexity, that we might not want to keep. The main complexity is _knot-tying_: to avoid lookups when generating the OpenAPI, it builds an actual graph of input types, which means that we need something similar to (but simpler than) `MonadSchema`, to avoid infinite recursions when analyzing the input types of a query. To do this, this PR introduces `CircularT`, a lesser `SchemaT` that aims at avoiding ever having to reinvent this particular wheel ever again.

### Remaining work

- [x] fix existing tests (they are all failing due to some of the schema changes)
- [ ] add tests to cover the new features:
  - [x] tests for `CircularT`
  - [ ] tests for enums in output schemas
- [x] extract / document `CircularT` if we wish to keep it
- [x] add more comments to `OpenAPI`
- [x] have a second look at `buildVariableSchema`
- [x] fix all missing diagnostics in `Analyze`
- [x] add a Changelog entry?

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4654
Co-authored-by: David Overton <7734777+dmoverton@users.noreply.github.com>
GitOrigin-RevId: f4a9191f22dfcc1dccefd6a52f5c586b6ad17172
2022-06-30 12:57:09 +00:00
Daniel Harvey
88ace749bc server: Fix a bunch of HLint suggestions
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4738
GitOrigin-RevId: d0c0b13ac02ca80e51ae3d582f2e6917f76ad202
2022-06-21 11:12:42 +00:00
Daniel Harvey
03c93ad96f server: Refactor TByteString to SerializableBlob
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4736
GitOrigin-RevId: 446832b00c24205c2237666ac9d954277c5fd05d
2022-06-17 09:57:38 +00:00
Tom Harding
0f553cf1a3 Remove Data.Set.Extended
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4698
GitOrigin-RevId: 06104ea4c67301f058bb24fd395707bb69721954
2022-06-15 09:02:23 +00:00
Tom Harding
e22eb1afea Weeding (2/?)
## Description

Following on from #4572, this removes more dead code as identified by Weeder. Comments and thoughts similarly welcome!

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4587
GitOrigin-RevId: 73aa6a5a2833ee41d29b71fcd0a72ed19822ca73
2022-06-09 16:40:49 +00:00
Brandon Simmons
6e8da71ece server: migrate to aeson-2 in preparation for ghc 9.2 upgrade
(Work here originally done by awjchen, rebased and fixed up for merge by
jberryman)

This is part of a merge train towards GHC 9.2 compatibility. The main
issue is the use of the new abstract `KeyMap` in 2.0. See:
https://hackage.haskell.org/package/aeson-2.0.3.0/changelog

Alex's original work is here:
#4305

BEHAVIOR CHANGE NOTE: This change causes a different arbitrary ordering
of serialized Json, for example during metadata export. CLI users care
about this in particular, and so we need to call it out as a _behavior
change_ as we did in v2.5.0. The good news though is that after this
change ordering should be more stable (alphabetical key order).

See: https://hasurahq.slack.com/archives/C01M20G1YRW/p1654012632634389

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4611
Co-authored-by: awjchen <13142944+awjchen@users.noreply.github.com>
GitOrigin-RevId: 700265162c782739b2bb88300ee3cda3819b2e87
2022-06-08 15:32:27 +00:00
Tom Harding
a3031aed03 Add Weeder, begin weeding (1/?)
## Description

This PR adds a config file for [`weeder`](https://github.com/ocharles/weeder) to the `-mono` repository. `weeder` checks for dead code by building a call graph from the given entry points (currently every module named `Main` with a `main` function) and then marking every function _not_ in that call graph as dead code.

To avoid very large PRs, I'm going to tackle this in a series. This first PR adds the basic configuration, plus removes as many weeds as it took for me to realise this was going to become a very big PR. The PRs after this will largely be removing dead code, until the final PR that will add Weeder to the CI pipeline.

### Related Issues

This closes #2973.

## Affected components

- Server

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4572
GitOrigin-RevId: ac8eaa9473e5ac1f16babcb35388694392d0d7dc
2022-05-31 15:43:34 +00:00
paritosh-08
fd30fb343b server: naming conventions for auto generated fields
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3982
Co-authored-by: Brandon Simmons <210815+jberryman@users.noreply.github.com>
GitOrigin-RevId: f90b2e8f394e7bd69780f003d2d980475f104f42
2022-05-26 11:55:29 +00:00
Tom Harding
3db241155d Make ForeignKey mappings non-empty
Previously, these were represented with a HashMap, but supposedly that map can never be empty. Now, it uses NEHashMap, which carries the non-empty invariant behind a smart constructor.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4481
GitOrigin-RevId: 93ad9aaa9354f25a1ba10e8207ae19614e1e439e
2022-05-10 15:44:46 +00:00
Daniel Chambers
970d69edd4 Added BackendConfig to allow sources to share configuration of Data Connectors [GDW-78]
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4271
GitOrigin-RevId: 6990010bff622a424ca0bb9d24579bf121819fb0
2022-04-29 02:14:10 +00:00
Philip Lykke Carlsen
df36cdac09 Refactor insert mutations IR use of "default values"
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4316
GitOrigin-RevId: 91f80902a2dc2a782821033f455c70c4e96f0950
2022-04-21 16:34:04 +00:00
Solomon
c945b2d391 Replaces litName splices with name quasiquotes
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4267
GitOrigin-RevId: 2d93c35a7e34dbada3b72aabcae5fc2858bbfc29
2022-04-18 19:44:04 +00:00
Karthikeyan Chinnakonda
362aca9db3 server: streaming subscriptions execution (Incremental PR - 2)
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/4016
GitOrigin-RevId: 778300dd5ea094bc76b8f96c046313132863f832
2022-04-07 14:43:01 +00:00
jkachmar
adb648b429 server: Rework internal webhook request transform components
## Description

Some of the documentation/organizational changes I was putting into the suggestions for #3624 were a bit too convoluted for GitHub's suggestion interface, so I'm putting them here instead.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3910
Co-authored-by: Solomon <24038+solomon-b@users.noreply.github.com>
GitOrigin-RevId: 06e0cb08bd18e7f8b21452df0697cfd80bc56fde
2022-03-23 20:24:44 +00:00
jkachmar
647231b685 Yeet some default-extensions
Manually enables:
* EmptyCase
* ExistentialQuantification
* QuantifiedConstraints
* QuasiQuotes
* TemplateHaskell
* TypeFamilyDependencies

...in the following components:
* 'graphql-engine' library
* 'graphql-engine' 'src-test'
* 'graphql-engine' 'tests/integration'
* 'graphql-engine' tests-hspec'

Additionally, performs some light refactoring and documentation.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3991
GitOrigin-RevId: 514477d3466b01f60eca8935d0fef60dd0756838
2022-03-16 00:40:17 +00:00
Antoine Leblanc
85b8753fde Cleanup post #3810
### Description

#3810 was merged with comments still open; this small PR does a few minute clean-ups to address some remaining nits.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3941
GitOrigin-RevId: 3d15eb399828123640a73247b848bc4ddff02c38
2022-03-10 02:13:49 +00:00
Antoine Leblanc
553ecf628b Prevent impure errors with monadic map union
### Description

This very small PR introduces `unionWithM`, to allow hashmap union that might fail, and uses it to transform an `error` into a `throw500`. It also reorders `HashMap.Strict.Extended` to group all "union" functions together.

There is, however, a broader question of whether we should encourage the proliferation of such functions. If so, we might also want to consider:
- `mapWithKeyM`, to remove the `unsafeMkName` of `RemoteJoin.Collect`
- `forWithKey`, as a flipped version of `traverseWithKey`

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3917
GitOrigin-RevId: a488d5bf04a73878b9e42f27ede36199bb4c920a
2022-03-09 23:27:13 +00:00
Antoine Leblanc
6e1761f8f9 Enable remote joins from remote schemas in the execution engine.
### Description

This PR adds the ability to perform remote joins from remote schemas in the engine. To do so, we alter the definition of an `ExecutionStep` targeting a remote schema: the `ExecStepRemote` constructor now expects a `Maybe RemoteJoins`. This new argument is used when processing the execution step, in the transport layer (either `Transport.HTTP` or `Transport.WebSocket`).

For this `Maybe RemoteJoins` to be extracted from a parsed query, this PR also extends the `Execute.RemoteJoin.Collect` module, to implement "collection" from a selection set. Not only do those new functions extract the remote joins, but they also apply all necessary transformations to the selection sets (such as inserting the necessary "phantom" fields used as join keys).

Finally in `Execute.RemoteJoin.Join`, we make two changes. First, we now always look for nested remote joins, regardless of whether the join we just performed went to a source or a remote schema; and second we adapt our join tree logic according to the special cases that were added to deal with remote server edge cases.

Additionally, this PR refactors / cleans / documents `Execute.RemoteJoin.RemoteServer`. This is not required as part of this change and could be moved to a separate PR if needed (a similar cleanup of `Join` is done independently in #3894). It also introduces a draft of a new documentation page for this project, that will be refined in the release PR that ships the feature (either #3069 or a copy of it).

While this PR extends the engine, it doesn't plug such relationships in the schema, meaning that, as of this PR, the new code paths in `Join` are technically unreachable. Adding the corresponding schema code and, ultimately, enabling the metadata API will be done in subsequent PRs.

### Keeping track of concrete type names

The main change this PR makes to the existing `Join` code is to handle a new reserved field we sometimes use when targeting remote servers: the `__hasura_internal_typename` field. In short, a GraphQL selection set can sometimes "branch" based on the concrete "runtime type" of the object on which the selection happens:

```graphql
query {
  author(id: 53478) {
    ... on Writer {
      name
      articles {
        title
      }
    }
    ... on Artist {
      name
      articles {
        title
      }
    }
  }
}
```

If both of those `articles` are remote joins, we need to be able, when we get the answer, to differentiate between the two different cases. We do this by asking for `__typename`, to be able to decide if we're in the `Writer` or the `Artist` branch of the query.

To avoid further processing / customization of results, we only insert this `__hasura_internal_typename: __typename` field in the query in the case of unions of interfaces AND if we have the guarantee that we will processing the request as part of the remote joins "folding": that is, if there's any remote join in this branch in the tree. Otherwise, we don't insert the field, and we leave that part of the response untouched.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3810
GitOrigin-RevId: 89aaf16274d68e26ad3730b80c2d2fdc2896b96c
2022-03-09 03:18:22 +00:00
Rakesh Emmadi
aa19f1e0d0 server/postgres: improve fetching tables' and functions' metadata (from database)
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3778
GitOrigin-RevId: 13bb97bdb7afad265db899f368c74d9f240b214a
2022-03-08 13:03:14 +00:00
David Overton
2792f515d4 Traverse variables in action remote joins
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3864
GitOrigin-RevId: 0fb624260db46474056ee323638d9be7d074b3fc
2022-03-08 08:23:20 +00:00
Rakesh Emmadi
878f6108e6 server/bigquery: apply 'order by' to 'array_agg' projection inside an array relationship join sub-query
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3824
GitOrigin-RevId: b1739c35fb2c387152729d3ff72c6ff7ef9b9118
2022-03-07 10:13:02 +00:00
Antoine Leblanc
f96b889401 Replace all occurrences of mapMaybe id by catMaybes.
### Description

Several libraries define `catMaybes` as `mapMaybe id`. We had it defined in `Data.HashMap.Strict.Extended` already. This small PR also defines it in `Extended` modules for other containers and replaces every occurrence of `mapMaybe id` accordingly.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3884
GitOrigin-RevId: d222a2ca2f4eb9b725b20450a62a626d3886dbf4
2022-03-03 20:13:10 +00:00
Antoine Leblanc
0e3beb028d Extract generic containers from the codebase
### Description

There were several places in the codebase where we would either implement a generic container, or express the need for one. This PR extracts / creates all relevant containers, and adapts the relevant parts of the code to make use of said new generic containers. More specifically, it introduces the following modules:
- `Data.Set.Extended`, for new functions on `Data.Set`
- `Data.HashMap.Strict.Multi`, for hash maps that accept multiple values
- `Data.HashMap.Strict.NonEmpty`, for hash maps that can never be constructed as empty
- `Data.Trie`, for a generic implementation of a prefix tree

This PR makes use of those new containers in the following parts of the code:
- `Hasura.GraphQL.Execute.RemoteJoin.Types`
- `Hasura.RQL.Types.Endpoint*`

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3828
GitOrigin-RevId: e6c1b971bcb3f5ab66bc91d0fa4d0e9df7a0c6c6
2022-03-01 16:04:22 +00:00
Antoine Leblanc
a1886b3729 Generalize remote schemas IR
### Description

This PR is one further step towards remote joins from remote schemas. It introduces a custom partial AST to represent queries to remote schemas in the IR: we now need to augment what used to be a straightforward GraphQL AST with additional information for remote join fields.

This PR does the minimal amount of work to adjust the rest of the code accordingly, using `Void` in all places that expect a type representing remote relationships.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3794
GitOrigin-RevId: 33fc317731aace71f82ad158a1951ea93350d6cc
2022-02-25 20:38:46 +00:00
jkachmar
d50aae87a5 Updates cabal freeze file
#### TODO

- [x] fix `hashable >= 1.3.1` serialization ordering issue [^1]
  - `test_graphql_mutations.py::TestGraphQLMutateEnums` was failing
- [x] fix `unordered-containers` serialization ordering issue [^2]
  - `test_graphql_queries.py` was failing on Citus
- [ ] verify that no new failures have been introduced
- [ ] open issues to fix the above
  - identify test cases that "leak" implementation details by depending on `hashable` instance ordering
  - bump `hashable >= 1.3.1` and update test cases with new ordering OR modify them so that ordering is stable
  - bump `unordered-containers >= 0.2.15.0` and update test cases with new ordering OR modify them so that ordering is stable
    - one of the test cases was failing on string equality comparison for a generated Citus query
    - we probably don't want to _actually_ do this unless there are _very specific_ guarantees we want to make about generated query structure
---

Just what it says on the tin.

https://github.com/hasura/graphql-engine-mono/pull/3538 updated the freeze file a few weeks ago, but it looks like the index state hadn't been updated since December so a lot of stuff that had newer versions didn't get updated.

---

EDIT: I should add, the motivation for doing this in the first place is that `hspec > 2.8.4` now supports specifying filtering spec trees based on patterns provided by the `HSPEC_MATCH` environment variable.

For example, one could have a script that executes the following:
```
HSPEC_MATCH="PostgreSQL" \
  ghcid \
    --command \
      'cabal repl graphql-engine:test:tests-hspec \
         --repl-option -O0 \
         --repl-option -fobject-code' \
    --test "main"
```
...which will loop on typechecking the `tests-hspec` component, and then as soon as it passes (i.e. no warnings or errors) will run _only_ the `PostgreSQL` sub-components.

[^1]: `hashable >= 1.3.1.0` [updated its default salts](https://github.com/haskell-unordered-containers/hashable/pull/196), which [broke serialization ordering](https://github.com/haskell/aeson/issues/837)
[^2]: `unordered-containers >= 0.2.16.0` [introduced changes to some of its internal functions](https://hackage.haskell.org/package/unordered-containers-0.2.16.0/changelog) which seem like they could have affected serialization stability

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3672
GitOrigin-RevId: bbd1d48c73db4021913f0b5345b7315a8d6525d3
2022-02-18 05:32:08 +00:00
Swann Moreau
8bd34b4a51 server, pro: add support for per-role allowlists
spec: https://github.com/hasura/graphql-engine-mono/pull/2278

Briefly:
- extend metadata so that allowlist entries get a new scope field
- update `add_collection_to_allowlist` to accept this new scope field,
  and adds `update_scope_of_collection_in_allowlist` to change the scope
- scope can be global or role-based; a collection is available for every
  role if it is global, and available to every listed role if it is role-based
- graphql-engine-oss is aware of role-based allowlist metadata; collections
  with non-global scope are treated as if they weren't in the allowlist

To run the tests:
- `cabal run graphql-engine-tests -- unit --match Allowlist`
- py-tests against pro:
  - launch `graphql-engine-pro` with `HASURA_GRAPHQL_ADMIN_SECRET` and `HASURA_GRAPHQL_ENABLE_ALLOWLIST`
  - `pytest test_allowlist_queries.py --hge-urls=... --pg-urls=... --hge-key=... --test-allowlist-queries --pro-tests`

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/2477
Co-authored-by: Anon Ray <616387+ecthiender@users.noreply.github.com>
Co-authored-by: Robert <132113+robx@users.noreply.github.com>
GitOrigin-RevId: 01f8026fbe59d8701e2de30986511a452fce1a99
2022-02-08 16:54:49 +00:00
Auke Booij
c4cdacf989 First attempt at deduplicating permission filters
PR-URL: https://github.com/hasura/graphql-engine-mono/pull/3362
Co-authored-by: Chris Parks <592078+cdparks@users.noreply.github.com>
GitOrigin-RevId: 802c099c26ff024e6cf594ea0317480e260486e9
2022-02-03 16:14:44 +00:00