Expressing a complex structure in Terraform and reading it in Go - go

Question

Note: edited after a comment from #JimB
I am trying to build a new Terraform provider in Go. The resource that I need is a bit complex. It includes structures, arrays within structures, arrays and structures within arrays. When I run Terraform, it gives me errors, for example:
panic: Error reading level config: '' expected type 'string', got unconvertible type 'map[string]interface {}'. I can't figure out what I am doing wrong.
When I make the structures simple enough, they do work, but I need this resource and I'm sure there's a way to do it, and I'm just missing something perhaps trivial.
-- Here's the Terraform structure:
resource "struct" "my-struct-1" {
name = "MyFile"
complexstruct = [{
onebool = true
onearray = [{
name = "name-1"
value = "value-1"
}, {
name = "name-2"
value = "value-2"
}]
internalstruct = [{
attr1 = false
attr2 = "attribute"
}]
}]
array = [
{
attrib1 = "attrib1.1"
attrib2 = false
attrib3 = "attrib1.3"
},
{
attrib1 = "attrib2.1"
attrib2 = true
attrib3 = "attrib2.3"
}
]
}
-- Here is the Schema definition in go, as simplified as I could make it:
Schema: map[string]*schema.Schema{
"name": {
Type: schema.TypeString,
Required: true,
},
"complexstruct": {
Type: schema.TypeList,
MaxItems: 1,
Optional: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"onebool": {
Type: schema.TypeBool,
Optional: true,
},
"onearray": {
Type: schema.TypeList,
Optional: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"name": {
Type: schema.TypeString,
Optional: true,
},
"value": {
Type: schema.TypeString,
Optional: true,
},
},
},
},
"internalstruct": {
Type: schema.TypeList,
MaxItems: 1,
Optional: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"attr1": {
Type: schema.TypeBool,
Optional: true,
},
"attr2": {
Type: schema.TypeString,
Optional: true,
},
},
},
},
},
},
},
"array": {
Type: schema.TypeList,
Optional: true,
Elem: map[string]*schema.Schema{
"attrib1": {
Type: schema.TypeString,
Optional: true,
},
"attrib2": {
Type: schema.TypeBool,
Optional: true,
},
"attrib3": {
Type: schema.TypeString,
Optional: true,
},
},
},
},
----- And lastly, here's the code that I am trying to use (however, I think the problem is before it starts with the code itself):
fname := d.Get("name").(string)
d.SetId(fname)
if _, ok := d.GetOk("complexstruct"); ok {
fc := d.Get("complexstruct").([]map[string]interface{})
myBool := fc[0]["onebool"].(bool)
myArray := fc[0]["onearray"].([]map[string]interface{})
type fcS struct {
Name string `json:"name"`
Value string `json:"value"`
}
fcs := make([]fcS, len(myArray))
for ifc := range myArray {
fcs[ifc].Name = myArray[ifc]["name"].(string)
fcs[ifc].Value = myArray[ifc]["value"].(string)
}
myInternalStruct := fc[0]["internalstruct"].([]map[string]interface{})
type misS struct {
Attr1 bool `json:"attr1"`
Attr2 string `json:"attr2"'`
}
var mis misS
mis.Attr1 = myInternalStruct[0]["attr1"].(bool)
mis.Attr2 = myInternalStruct[0]["attr2"].(string)
type myWholeStruct struct {
MyBool bool `json:"onebool"`
MyArray []fcS `json:"onearray"`
MyInter misS `json:"internalstruct"`
}
outp := myWholeStruct{
myBool,
fcs,
mis,
}
o, _ := json.Marshal(outp)
writeStringToFile(string(o), fname, false)
}
Well, I expect the create function to create a file with the name taken from the name attribute, and the data a JSON representation of the values of the other Terraform attributes. Instead I am getting errors as specified above.