1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
{{- range $object := .Objects }}{{- range $field := $object.Fields }}
{{- if $object.Stream }}
func (ec *executionContext) _{{$object.Name}}_{{$field.Name}}(ctx context.Context, field graphql.CollectedField) func() graphql.Marshaler {
ctx = graphql.WithResolverContext(ctx, &graphql.ResolverContext{
Field: field,
Args: nil,
})
{{- if $field.Args }}
rawArgs := field.ArgumentMap(ec.Variables)
args, err := ec.{{ $field.ArgsFunc }}(ctx,rawArgs)
if err != nil {
ec.Error(ctx, err)
return nil
}
{{- end }}
// FIXME: subscriptions are missing request middleware stack https://github.com/99designs/gqlgen/issues/259
// and Tracer stack
rctx := ctx
results, err := ec.resolvers.{{ $field.ShortInvocation }}
if err != nil {
ec.Error(ctx, err)
return nil
}
return func() graphql.Marshaler {
res, ok := <-results
if !ok {
return nil
}
return graphql.WriterFunc(func(w io.Writer) {
w.Write([]byte{'{'})
graphql.MarshalString(field.Alias).MarshalGQL(w)
w.Write([]byte{':'})
ec.{{ $field.TypeReference.MarshalFunc }}(ctx, field.Selections, res).MarshalGQL(w)
w.Write([]byte{'}'})
})
}
}
{{ else }}
func (ec *executionContext) _{{$object.Name}}_{{$field.Name}}(ctx context.Context, field graphql.CollectedField{{ if not $object.Root }}, obj {{$object.Reference | ref}}{{end}}) (ret graphql.Marshaler) {
ctx = ec.Tracer.StartFieldExecution(ctx, field)
defer func () {
if r := recover(); r != nil {
ec.Error(ctx, ec.Recover(ctx, r))
ret = graphql.Null
}
ec.Tracer.EndFieldExecution(ctx)
}()
rctx := &graphql.ResolverContext{
Object: {{$object.Name|quote}},
Field: field,
Args: nil,
IsMethod: {{or $field.IsMethod $field.IsResolver}},
}
ctx = graphql.WithResolverContext(ctx, rctx)
{{- if $field.Args }}
rawArgs := field.ArgumentMap(ec.Variables)
args, err := ec.{{ $field.ArgsFunc }}(ctx,rawArgs)
if err != nil {
ec.Error(ctx, err)
return graphql.Null
}
rctx.Args = args
{{- end }}
ctx = ec.Tracer.StartFieldResolverExecution(ctx, rctx)
{{- if $.Directives.LocationDirectives "FIELD" }}
resTmp := ec._fieldMiddleware(ctx, {{if $object.Root}}nil{{else}}obj{{end}}, func(rctx context.Context) (interface{}, error) {
{{ template "field" $field }}
})
{{ else }}
resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
{{ template "field" $field }}
})
if err != nil {
ec.Error(ctx, err)
return graphql.Null
}
{{- end }}
if resTmp == nil {
{{- if $field.TypeReference.GQL.NonNull }}
if !ec.HasError(rctx) {
ec.Errorf(ctx, "must not be null")
}
{{- end }}
return graphql.Null
}
res := resTmp.({{$field.TypeReference.GO | ref}})
rctx.Result = res
ctx = ec.Tracer.StartFieldChildExecution(ctx)
return ec.{{ $field.TypeReference.MarshalFunc }}(ctx, field.Selections, res)
}
{{ end }}
{{- end }}{{- end}}
{{ define "field" }}
{{- if .HasDirectives -}}
directive0 := func(rctx context.Context) (interface{}, error) {
ctx = rctx // use context from middleware stack in children
{{ template "fieldDefinition" . }}
}
{{ template "implDirectives" . }}
tmp, err := directive{{.ImplDirectives|len}}(rctx)
if err != nil {
return nil, err
}
if data, ok := tmp.({{ .TypeReference.GO | ref }}) ; ok {
return data, nil
}
{{- if .TypeReference.IsNilable -}}
else if tmp == nil {
return nil, nil
}
{{- end }}
return nil, fmt.Errorf(`unexpected type %T from directive, should be {{ .TypeReference.GO }}`, tmp)
{{- else -}}
ctx = rctx // use context from middleware stack in children
{{ template "fieldDefinition" . }}
{{- end -}}
{{ end }}
{{ define "fieldDefinition" }}
{{- if .IsResolver -}}
return ec.resolvers.{{ .ShortInvocation }}
{{- else if .IsMap -}}
switch v := {{.GoReceiverName}}[{{.Name|quote}}].(type) {
case {{.TypeReference.GO | ref}}:
return v, nil
case {{.TypeReference.Elem.GO | ref}}:
return &v, nil
case nil:
return ({{.TypeReference.GO | ref}})(nil), nil
default:
return nil, fmt.Errorf("unexpected type %T for field %s", v, {{ .Name | quote}})
}
{{- else if .IsMethod -}}
{{- if .NoErr -}}
return {{.GoReceiverName}}.{{.GoFieldName}}({{ .CallArgs }}), nil
{{- else -}}
return {{.GoReceiverName}}.{{.GoFieldName}}({{ .CallArgs }})
{{- end -}}
{{- else if .IsVariable -}}
return {{.GoReceiverName}}.{{.GoFieldName}}, nil
{{- end }}
{{- end }}
|
