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|
{{ reserveImport "context" }}
{{ reserveImport "fmt" }}
{{ reserveImport "io" }}
{{ reserveImport "strconv" }}
{{ reserveImport "time" }}
{{ reserveImport "sync" }}
{{ reserveImport "sync/atomic" }}
{{ reserveImport "errors" }}
{{ reserveImport "bytes" }}
{{ reserveImport "github.com/vektah/gqlparser" }}
{{ reserveImport "github.com/vektah/gqlparser/ast" }}
{{ reserveImport "github.com/99designs/gqlgen/graphql" }}
{{ reserveImport "github.com/99designs/gqlgen/graphql/introspection" }}
// NewExecutableSchema creates an ExecutableSchema from the ResolverRoot interface.
func NewExecutableSchema(cfg Config) graphql.ExecutableSchema {
return &executableSchema{
resolvers: cfg.Resolvers,
directives: cfg.Directives,
complexity: cfg.Complexity,
}
}
type Config struct {
Resolvers ResolverRoot
Directives DirectiveRoot
Complexity ComplexityRoot
}
type ResolverRoot interface {
{{- range $object := .Objects -}}
{{ if $object.HasResolvers -}}
{{$object.Name}}() {{$object.Name}}Resolver
{{ end }}
{{- end }}
}
type DirectiveRoot struct {
{{ range $directive := .Directives }}
{{ $directive.Declaration }}
{{ end }}
}
type ComplexityRoot struct {
{{ range $object := .Objects }}
{{ if not $object.IsReserved -}}
{{ $object.Name|go }} struct {
{{ range $_, $fields := $object.UniqueFields }}
{{- $field := index $fields 0 -}}
{{ if not $field.IsReserved -}}
{{ $field.GoFieldName }} {{ $field.ComplexitySignature }}
{{ end }}
{{- end }}
}
{{- end }}
{{ end }}
}
{{ range $object := .Objects -}}
{{ if $object.HasResolvers }}
type {{$object.Name}}Resolver interface {
{{ range $field := $object.Fields -}}
{{- if $field.IsResolver }}
{{- $field.GoFieldName}}{{ $field.ShortResolverDeclaration }}
{{- end }}
{{ end }}
}
{{- end }}
{{- end }}
type executableSchema struct {
resolvers ResolverRoot
directives DirectiveRoot
complexity ComplexityRoot
}
func (e *executableSchema) Schema() *ast.Schema {
return parsedSchema
}
func (e *executableSchema) Complexity(typeName, field string, childComplexity int, rawArgs map[string]interface{}) (int, bool) {
ec := executionContext{nil, e}
_ = ec
switch typeName + "." + field {
{{ range $object := .Objects }}
{{ if not $object.IsReserved }}
{{ range $_, $fields := $object.UniqueFields }}
{{- $len := len $fields }}
{{- range $i, $field := $fields }}
{{- $last := eq (add $i 1) $len }}
{{- if not $field.IsReserved }}
{{- if eq $i 0 }}case {{ end }}"{{$object.Name}}.{{$field.Name}}"{{ if not $last }},{{ else }}:
if e.complexity.{{$object.Name|go}}.{{$field.GoFieldName}} == nil {
break
}
{{ if $field.Args }}
args, err := ec.{{ $field.ArgsFunc }}(context.TODO(),rawArgs)
if err != nil {
return 0, false
}
{{ end }}
return e.complexity.{{$object.Name|go}}.{{$field.GoFieldName}}(childComplexity{{if $field.Args}}, {{$field.ComplexityArgs}} {{ end }}), true
{{ end }}
{{- end }}
{{- end }}
{{ end }}
{{ end }}
{{ end }}
}
return 0, false
}
func (e *executableSchema) Query(ctx context.Context, op *ast.OperationDefinition) *graphql.Response {
{{- if .QueryRoot }}
ec := executionContext{graphql.GetRequestContext(ctx), e}
buf := ec.RequestMiddleware(ctx, func(ctx context.Context) []byte {
data := ec._{{.QueryRoot.Name}}(ctx, op.SelectionSet)
var buf bytes.Buffer
data.MarshalGQL(&buf)
return buf.Bytes()
})
return &graphql.Response{
Data: buf,
Errors: ec.Errors,
Extensions: ec.Extensions,
}
{{- else }}
return graphql.ErrorResponse(ctx, "queries are not supported")
{{- end }}
}
func (e *executableSchema) Mutation(ctx context.Context, op *ast.OperationDefinition) *graphql.Response {
{{- if .MutationRoot }}
ec := executionContext{graphql.GetRequestContext(ctx), e}
buf := ec.RequestMiddleware(ctx, func(ctx context.Context) []byte {
data := ec._{{.MutationRoot.Name}}(ctx, op.SelectionSet)
var buf bytes.Buffer
data.MarshalGQL(&buf)
return buf.Bytes()
})
return &graphql.Response{
Data: buf,
Errors: ec.Errors,
Extensions: ec.Extensions,
}
{{- else }}
return graphql.ErrorResponse(ctx, "mutations are not supported")
{{- end }}
}
func (e *executableSchema) Subscription(ctx context.Context, op *ast.OperationDefinition) func() *graphql.Response {
{{- if .SubscriptionRoot }}
ec := executionContext{graphql.GetRequestContext(ctx), e}
next := ec._{{.SubscriptionRoot.Name}}(ctx, op.SelectionSet)
if ec.Errors != nil {
return graphql.OneShot(&graphql.Response{Data: []byte("null"), Errors: ec.Errors})
}
var buf bytes.Buffer
return func() *graphql.Response {
buf := ec.RequestMiddleware(ctx, func(ctx context.Context) []byte {
buf.Reset()
data := next()
if data == nil {
return nil
}
data.MarshalGQL(&buf)
return buf.Bytes()
})
if buf == nil {
return nil
}
return &graphql.Response{
Data: buf,
Errors: ec.Errors,
Extensions: ec.Extensions,
}
}
{{- else }}
return graphql.OneShot(graphql.ErrorResponse(ctx, "subscriptions are not supported"))
{{- end }}
}
type executionContext struct {
*graphql.RequestContext
*executableSchema
}
func (ec *executionContext) FieldMiddleware(ctx context.Context, obj interface{}, next graphql.Resolver) (ret interface{}) {
defer func() {
if r := recover(); r != nil {
ec.Error(ctx, ec.Recover(ctx, r))
ret = nil
}
}()
{{- if .Directives }}
rctx := graphql.GetResolverContext(ctx)
for _, d := range rctx.Field.Definition.Directives {
switch d.Name {
{{- range $directive := .Directives }}
case "{{$directive.Name}}":
if ec.directives.{{$directive.Name|ucFirst}} != nil {
{{- if $directive.Args }}
rawArgs := d.ArgumentMap(ec.Variables)
args, err := ec.{{ $directive.ArgsFunc }}(ctx,rawArgs)
if err != nil {
ec.Error(ctx, err)
return nil
}
{{- end }}
n := next
next = func(ctx context.Context) (interface{}, error) {
return ec.directives.{{$directive.Name|ucFirst}}({{$directive.CallArgs}})
}
}
{{- end }}
}
}
{{- end }}
res, err := ec.ResolverMiddleware(ctx, next)
if err != nil {
ec.Error(ctx, err)
return nil
}
return res
}
func (ec *executionContext) introspectSchema() (*introspection.Schema, error) {
if ec.DisableIntrospection {
return nil, errors.New("introspection disabled")
}
return introspection.WrapSchema(parsedSchema), nil
}
func (ec *executionContext) introspectType(name string) (*introspection.Type, error) {
if ec.DisableIntrospection {
return nil, errors.New("introspection disabled")
}
return introspection.WrapTypeFromDef(parsedSchema, parsedSchema.Types[name]), nil
}
var parsedSchema = gqlparser.MustLoadSchema(
{{- range $filename, $schema := .SchemaStr }}
&ast.Source{Name: {{$filename|quote}}, Input: {{$schema|rawQuote}}},
{{- end }}
)
|
