I have a go file for a package that is becoming unwieldy, so I want to split it into multiple logical files.
I have the files currently split (and abridged) like so:
// node.go
package schema
import (
"github.com/graphql-go/graphql"
"github.com/graphql-go/relay"
)
var nodeDefinitions *relay.NodeDefinitions
func init() {
nodeDefinitions = relay.NewNodeDefinitions(relay.NodeDefinitionsConfig{
IDFetcher: func(id string, info graphql.ResolveInfo) interface{} {
...
},
TypeResolve: func(value interface{}, info graphql.ResolveInfo) *graphql.Object {
// based on the type of the value, return GraphQLObjectType
switch value.(type) {
default:
return testType //Depends on the test.go
}
},
})
}
//root.go
package schema
import (
"github.com/graphql-go/graphql"
)
var Schema graphql.Schema
func init() {
queryType := graphql.NewObject(graphql.ObjectConfig{
Name: "Query",
Fields: graphql.Fields{
"version": &graphql.Field{
Type: versionType, //Depends on testtype.go
...
},
"node": nodeDefinitions.NodeField, //Depends on node.go
},
})
Schema, _ = graphql.NewSchema(graphql.SchemaConfig{
Query: queryType,
})
}
//testtype.go
package schema
import (
"github.com/graphql-go/graphql"
"github.com/graphql-go/relay"
)
var testType *graphql.Object
func init() {
testType = graphql.NewObject(graphql.ObjectConfig{
...
Interfaces: []*graphql.Interface{
nodeDefinitions.NodeInterface, //Depends on node.go
},
})
}
I then use the package in main.go
:
result := graphql.Do(graphql.Params{
Schema: schema.Schema,
RequestString: r.URL.Query()["query"][0],
})
While the package builds correctly, it complains with an error when I run it:
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x1 addr=0x0 pc=0x48e4b6]
goroutine 1 [running]:
test/testproject/vendor/github.com/graphql-go/graphql.(*Object).Error(0x0, 0xc082003380, 0x3c)
C:/go/src/test/testproject/vendor/github.com/graphql-go/graphql/definition.go:440 +0x26
test/testproject/vendor/github.com/graphql-go/graphql.defineFieldMap(0xda48b0, 0xc08206c780, 0xc0820550e0, 0xda
C:/go/src/test/testproject/vendor/github.com/graphql-go/graphql/definition.go:498 +0x532
test/testproject/vendor/github.com/graphql-go/graphql.(*Object).Fields(0xc08206c780, 0xc08206c780)
C:/go/src/test/testproject/vendor/github.com/graphql-go/graphql/definition.go:416 +0x106
test/testproject/vendor/github.com/graphql-go/graphql.typeMapReducer(0xc082055110, 0xda4560, 0xc08206c780, 0x0,
C:/go/src/test/testproject/vendor/github.com/graphql-go/graphql/schema.go:208 +0x79a
test/testproject/vendor/github.com/graphql-go/graphql.NewSchema(0xc08206c780, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0
C:/go/src/test/testproject/vendor/github.com/graphql-go/graphql/schema.go:67 +0x809
test/testproject/schema.init.2()
C:/go/src/test/testproject/schema/root.go:37 +0x244
test/testproject/schema.init()
C:/go/src/test/testproject/schema/version.go:37 +0x5b
main.init()
C:/go/src/test/testproject/main.go:37 +0x42
This is because:
node.go depends on testtype.go
testtype.go depends on node.go
root.go depends on node.go and testtype.go
go build
builds the files in the page by sorting the filenames alphabetically: node.go
then root.go
then testtype.go
.
If I rename root.go
to z.go
, it builds and runs correctly. Besides renaming root.go
to z.go
which is less than ideal, is there any other way I can get this working in a scalable way?