v1.9.0: implement engine (#231)
* remove broken test for this branch * add introspection query to starwars package * add test vor introspection query validation * split creation of RootOperationTypeDefinition function * simply function for addition * implement addition of __schema and __type field for introspection * use internal introspection query * normalize introspection query * introduce normalization result * update to new normalization contract * implement initial default complexity calculator * add initial depth calculation * fix depth calculation * add complexity result instead of bare int variables * make test more readable * remove duplicated code * WIP planning * rename AddTypeNamed to AddNamedType * update Makefile * update deps * initial version of planner * rename ResolveTypeName to ResolveTypeNameBytes * add field aliasing * add test for Operation with multiple Queries * WIP GraphQL DataSource * add graphql data source testing for Load * add visitorFilter to walker * WIP graphql datasource * wip graphql data source * add VariableValueNameString to ast.Document * simplify resolveVariables * print operation name when operation has variables * WIP graphql data source * fix all tests * simplify variables handling * simplify adding arg to field * simplify applyFieldArgument * fix tests * more complex graphql datasource test * more complex testing * rename DataSourceConfiguration to FieldConfiguration * add static datasource * resolve string without path correctly * add http json datasource * plan object argument resolving * implement proper argument resolving * extract FieldMappings into own config object on DataSourceConfigurations * update test version to 1.13 and 1.14 * field argument resolving * update graphql datasource to support two upstreams side by side * add overlapping testcase * add second overlapping test * re-use arguments for upstream graphql requests if an argument is already defined * WIP nested data source planning * WIP update tests * fix copy err * implement parallel fetch * add correct mock tests for complex resolver test, fix string quoting * fix allocation when resolving variables * add func to check if variable definition exists on operation definition * add func to generate unused variable definition name on operation definition * implement object field arguments for graphql upstreams * formatting * add func to ast to check if a selection set contains a field selection with a given name or alias * add capability to planner to delegate field path overrides to data sources * implement lists correctly * add base_url attribute to http json data source * bugfix: enum in resolve plan now string instead of object * bugfix: add wrapping string variables in quotes * add fast http json data source * add singleflight pattern for datasource load * move wg done after deletion from inflight map * remove inflight pool * make explicit copy of result when using singleflight * make singleflight configurable * refactor singleflight fetch to reuse resources * make singleflight configurable from the datasource planner * merge fast & net httpjson datasource into one ds with a client interface * refactor datasources to use one single http client which is injectable * rename url in httpjsondatasource params to path * add query params to httpjson data source * move subscription mock client to tests * implement querystring for net & fast http client * rename object field and field argument json fields * add todo for validation check on field dependencies * refactor field dependencies * WIP refactor datasources * refactor httpclient for datasources * make pool package importable * wrapQuotes for anonymous queries too * fix wrapQuotesIfString with JSON objects * wrapQuotes for anonymous queries too * fix arguments parsing * set content type headers on fasthttpclient * content type headers * fix content type headers * fix content type headers * fix content type headers * implement gzip * fix merge conflicts * add test for multiple query params with same name * add 2 failing tests * feat: enable array query params * implement array params for http json data source * reset active ds planner on enter document * abort graphql planner in case it doesn't get activated * add logging to fasthttpclient * remove optional variables from upstream requests * fix array query params * log response body * fix array query params * implement planning nullable fields correctly * make prepared inputs unique per request * fix array resolving for scalars without a path * fix bug where multiple graphql operations with the same upstream resulted in a panic * implement fastbuffer for resolver * fix resolving bugs * set headers on graphql data source * fix TypeValueNeedsQuotes to work for custom types * skip variable extraction if argument contains a variable * verify variables correct * fix variable validation for nested variables * add nested test for ast validation * skip directives for variable extraction * use correct object values index * allow inline argument values in graphql datasource * draft implementation of subscriptions * add mvp subscriptions impl to engine * remove unused code * resolve arrays correctly * allow nested data source * add variable quoting for enums when preparing variables * add unique identifier to datasource config so that nested resolvers of different upstreams can be distinguished * filter for field name too * filter for field name too * filter field name correctly * remove unused var * remove unused var * implement MVP http polling graphql subscriptions * add skip publish same response to http polling stream * fix ineffecturl assign * fix ineffecturl assign * reset subscription config on enter document during planning * set operation type always to Query on graphql datasource in case of a root field nested in another query * set operation type always to Query on graphql datasource in case of a root field nested in another query * fix validation for variables used in array objects * fix graphql query planner for variables in array object args * make copy of trigger input * extend trigger manager test * cleanup trigger manager * cleanup trigger manager * fix http polling test * migrate subscription impl to channels (#229) * migrate subscription impl to channels * fix tests * WIP add graphql subscription support * add dedicated websocket client * graphql subscriptions impl done * try passing test * add more tests * add go 1.15 for tests * add query planner impl for graphql subscriptions * extract graphql subscription response from data object before pushing to resolver * formatting * remove macos from build matrix * add StreamingResponsePlan skaffold * prep defer tests * add new literals * implement defer * fix tests * add defer postprocessor * add more tests to defer postprocessor * add test for default Processor * set Context nil on Free * implement stream resolving * add postprocessing for stream * add stream to planner * fix add path for array elements in json patch * cleanup stream and defer planning * propagate FlushInterval * cancel streaming resolver if client disconnects * fix tests * add ast printer test for correct spacing * remove input template segmenting from planning stage * refactor ast.Index to allow multiple root Nodes with the same name * add ProcessDataSource to postprocess for template segmenting * add federation resolver test * remove obsolete test * fix printing directive definitions * fix typo * add federation package to generate federation schemas based on a base schema and the service sdl * add federation test for postprocessing * formatting * fix http client json variable quote wrapping * update graphql datasource to properly normalize federation upstream queries * properly implement nested fields resolving * add more complex test * add more tests * add planv2 package with initial plan impl * add plan kind analyzer * initial version of query planner * implement disallow singleflight for mutations * implement nested resolver * implement required fields * implement recursive variables * add test for nested object with variables * implement subscriptions * implement federation * add graphql datasource implementation * implement all tests for http json datasource * rename ds packages * rename ds packages * fix static data source * fix all tests * make tests deterministic * add config loader * remove obsolete code Co-authored-by: Patric Vormstein <pvormstein@googlemail.com> Co-authored-by: Sergey Petrunin <sergey@tyk.io> Co-authored-by: Sergey Petrunin <spetrunin@users.noreply.github.com> Co-authored-by: Alexander Jandousek <alexander.jandousek@yahoo.de>