feat: Add Terraform generator (#18)

examples/petstore/manifest.cue

@@ -1,8 +1,2 @@
 // Package petstore is a sample package for testing
 package petstore
-
-options: templates: {
-	terraform: {
-		outdir: ".build/terraform"
-	}
-}

examples/simple/manifest.cue

@@ -40,13 +40,9 @@ resources: "Pet": models: "Pet": {
 }
 
 // Template definition
-templates: "foo": {
+templates: "foo": template.#Manifest & {
 	name: "basic"
 
-	inputs: template.#Inputs
-
-	diagnostics: [...template.#Diagnostic]
-
 	outputs: files: "README.md": {
 		content: "Hello, World!"
 	}

internal/cue/generator.go

@@ -61,20 +61,16 @@ func GeneratePlan(p *Package, options ...GenerateOption) (*Plan, error) {
 
 		color.Magenta("Generate template %q to folder %q", templateName, templateOptions.Outdir)
 
-		// Get the template
-		templateValue := p.value.LookupPath(cue.MakePath(cue.Str("templates"), cue.Str(templateName)))
-		if err := templateValue.Err(); err != nil {
-			return nil, fmt.Errorf("lookup path failed: %w", err)
-		}
-
 		// Fill the template with the input RMS data
-		concretTemplateValue := templateValue.FillPath(cue.MakePath(cue.Str("inputs")), &templateV1.Inputs{
-			Resources: rms.Resources,
-			Errors:    rms.Errors,
-			Vars:      templateOptions.Vars,
-		})
+		concretTemplateValue := p.value.
+			LookupPath(cue.MakePath(cue.Str("templates"), cue.Str(templateName))).
+			FillPath(cue.MakePath(cue.Str("inputs")), &templateV1.Inputs{
+				Resources: rms.Resources,
+				Errors:    rms.Errors,
+				Vars:      templateOptions.Vars,
+			})
 		if err := concretTemplateValue.Err(); err != nil {
-			return nil, fmt.Errorf("fill path failed: %w", err)
+			return nil, fmt.Errorf("fill inputs failed: %w", err)
 		}
 
 		// Check the template diagnostics

pkg/helpers/naming/naming.cue

@@ -0,0 +1,21 @@
+package naming
+
+import (
+	"strings"
+)
+
+#Snake: {
+	name:       string
+	snake:      name
+	uppercamel: strings.Join([ for _, token in strings.Split(snake, "_") {strings.ToTitle(strings.ToLower(token))}], "")
+	lowercamel: strings.ToCamel(uppercamel)
+	lower:      strings.ToLower(lowercamel)
+}
+
+#UpperCamel: {
+	snake:      "unimplemented"
+	name:       string
+	uppercamel: name
+	lowercamel: strings.ToCamel(uppercamel)
+	lower:      strings.ToLower(lowercamel)
+}

pkg/rms/v1/rms.proto

@@ -3,15 +3,15 @@ syntax = "proto3";
 package pkg.rms.v1;
 
 import "pkg/resource/v1/resource.proto";
-// import "pkg/template/v1/template.proto";
+import "pkg/template/v1/template.proto";
 
 option go_package = "github.com/GuanceCloud/iacker/pkg/rms/v1;v1";
 
 message Manifest {
   optional Options options = 1;
   map<string, pkg.resource.v1.Resource> resources = 2;
   map<string, pkg.resource.v1.Error> errors = 3;
-  // map<string, pkg.template.v1.Manifest> templates = 4;
+  map<string, pkg.template.v1.Manifest> templates = 4;
 }
 
 message Options {

templates/terraform/builder/model.cue

@@ -0,0 +1,175 @@
+package builder
+
+import (
+	"strings"
+	gotemplate "text/template"
+
+	resource "github.com/GuanceCloud/iacker/pkg/resource/v1"
+	naming "github.com/GuanceCloud/iacker/pkg/helpers/naming"
+)
+
+#StructBuilder: {
+	name: string
+
+	pkg: string
+
+	rs: resource.#Resource
+
+	isds: *false | bool
+
+	_resource_template: """
+		// Code generated by Guance Cloud Code Generation Pipeline. DO NOT EDIT.
+
+		package {{ .pkg }}
+
+		import (
+			"github.com/hashicorp/terraform-plugin-framework/types"
+
+			"github.com/GuanceCloud/terraform-provider-guance/internal/consts"
+		)
+
+		// {{ .name.lowercamel }}ResourceModel maps the resource schema data.
+		type {{ .name.lowercamel }}ResourceModel struct {
+			ID types.String `tfsdk:"id"`
+			CreatedAt types.String `tfsdk:"created_at"`
+			{{- range $v := .properties }}
+			{{ $v }}
+			{{- end }}
+		}
+
+		// GetId returns the ID of the resource.
+		func (m *{{ .name.lowercamel }}ResourceModel) GetId() string {
+			return m.ID.ValueString()
+		}
+
+		// SetId sets the ID of the resource.
+		func (m *{{ .name.lowercamel }}ResourceModel) SetId(id string) {
+			m.ID = types.StringValue(id)
+		}
+
+		// GetResourceType returns the type of the resource.
+		func (m *{{ .name.lowercamel }}ResourceModel) GetResourceType() string {
+			return consts.TypeName{{ .name.uppercamel }}
+		}
+
+		// SetCreatedAt sets the creation time of the resource.
+		func (m *{{ .name.lowercamel }}ResourceModel) SetCreatedAt(t string) {
+			m.CreatedAt = types.StringValue(t)
+		}
+		"""
+
+	_data_source_template: _resource_template + """
+		// {{ .name.lowercamel }}DataSourceModel maps the resource schema data.
+		type {{ .name.lowercamel }}DataSourceModel struct {
+			Items []*{{ .name.lowercamel }}ResourceModel `tfsdk:"items"`
+			Filters []*sdk.Filter `tfsdk:"filters"`
+			MaxResults types.Int64 `tfsdk:"max_results"`
+			ID      types.String   `tfsdk:"id"`
+		}
+		"""
+
+	_model_template: """
+		// {{ .name.uppercamel }} maps the resource schema data.
+		type {{ .name.uppercamel }} struct {
+			{{- range $v := .properties }}
+			{{ $v }}
+			{{- end }}
+		}
+		"""
+
+	_prop_template: """
+		{{ .name.uppercamel }} {{ template "type" .v.schema }} `tfsdk:"{{ .name.snake }}"`
+
+		{{- define "type" }}
+		{{- if eq .type "array" -}}
+			[]{{ template "elem" .elem }}
+		{{- else if eq .type "object" -}}
+			*{{ .model }}
+		{{- else if eq .type "ref" -}}
+			types.String
+		{{- else -}}
+			{{ template "primitive" . }}
+		{{- end -}}
+		{{- end }}
+
+		{{- define "elem" }}
+		{{- if eq .type "object" -}}
+			*{{ .model }}
+		{{- else if eq .type "ref" -}}
+			types.String
+		{{- else -}}
+			{{ template "primitive" . }}
+		{{- end -}}
+		{{- end }}
+
+		{{- define "primitive" }}
+		{{- if eq .type "integer" -}}
+			types.Int64
+		{{- else if eq .type "boolean" -}}
+			types.Bool
+		{{- else if eq .type "float" -}}
+			types.Float64
+		{{- else if eq .type "string" -}}
+			types.String
+		{{- else -}}
+			unsupported type: {{ .type }}
+		{{- end -}}
+		{{- end }}
+		"""
+
+	_resource: gotemplate.Execute(_resource_template, {
+		"name": naming.#UpperCamel & {"name": name}
+		"pkg":  pkg
+		v:      rs
+		properties: [
+			for i, pinfo in rs.models[name].properties {
+				gotemplate.Execute(_prop_template, {
+					name:  naming.#Snake & {"name": pinfo.name}
+					v:     pinfo
+					index: i + 1
+				})
+			},
+		]
+	})
+
+	_data_source: gotemplate.Execute(_data_source_template, {
+		"name": naming.#UpperCamel & {"name": name}
+		"pkg":  pkg
+		v:      rs
+		properties: [
+			for i, pinfo in rs.models[name].properties {
+				gotemplate.Execute(_prop_template, {
+					name:  naming.#Snake & {"name": pinfo.name}
+					v:     pinfo
+					index: i + 1
+				})
+			},
+		]
+	})
+
+	_models: [
+		for mname, minfo in rs.models if mname != name {
+			gotemplate.Execute(_model_template, {
+				name: naming.#UpperCamel & {"name": mname}
+				v:    minfo
+				properties: [
+					for i, pinfo in minfo.properties {
+						gotemplate.Execute(_prop_template, {
+							name:  naming.#Snake & {"name": pinfo.name}
+							v:     pinfo
+							index: i + 1
+						})
+					},
+				]
+			})
+		},
+	]
+
+	_block_sep: "\n" * 2
+	if !isds {
+		output: _resource + _block_sep + strings.Join(_models, _block_sep)
+	}
+	if isds {
+		output: _data_source + _block_sep + strings.Join(_models, _block_sep)
+	}
+}