135 lines
3.5 KiB
Go
135 lines
3.5 KiB
Go
package hclutils
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/hashicorp/go-msgpack/codec"
|
|
"github.com/hashicorp/hcl"
|
|
"github.com/hashicorp/hcl/hcl/ast"
|
|
"github.com/mitchellh/mapstructure"
|
|
"github.com/stretchr/testify/require"
|
|
"github.com/zclconf/go-cty/cty"
|
|
|
|
"github.com/hashicorp/nomad/helper/pluginutils/hclspecutils"
|
|
"github.com/hashicorp/nomad/nomad/jsonhandles"
|
|
"github.com/hashicorp/nomad/plugins/drivers"
|
|
"github.com/hashicorp/nomad/plugins/shared/hclspec"
|
|
)
|
|
|
|
type HCLParser struct {
|
|
spec *hclspec.Spec
|
|
vars map[string]cty.Value
|
|
}
|
|
|
|
// NewConfigParser return a helper for parsing drivers TaskConfig
|
|
// Parser is an immutable object can be used in multiple tests
|
|
func NewConfigParser(spec *hclspec.Spec) *HCLParser {
|
|
return &HCLParser{
|
|
spec: spec,
|
|
}
|
|
}
|
|
|
|
// WithVars returns a new parser that uses passed vars when interpolated strings in config
|
|
func (b *HCLParser) WithVars(vars map[string]cty.Value) *HCLParser {
|
|
return &HCLParser{
|
|
spec: b.spec,
|
|
vars: vars,
|
|
}
|
|
}
|
|
|
|
// ParseJson parses the json config string and decode it into the `out` parameter.
|
|
// out parameter should be a golang reference to a driver specific TaskConfig reference.
|
|
// The function terminates and reports errors if any is found during conversion.
|
|
//
|
|
// Sample invocation would be
|
|
//
|
|
// ```
|
|
// var tc *TaskConfig
|
|
// hclutils.NewConfigParser(spec).ParseJson(t, configString, &tc)
|
|
// ```
|
|
func (b *HCLParser) ParseJson(t *testing.T, configStr string, out interface{}) {
|
|
config := JsonConfigToInterface(t, configStr)
|
|
b.parse(t, config, out)
|
|
}
|
|
|
|
// ParseHCL parses the hcl config string and decode it into the `out` parameter.
|
|
// out parameter should be a golang reference to a driver specific TaskConfig reference.
|
|
// The function terminates and reports errors if any is found during conversion.
|
|
//
|
|
// Sample invocation would be
|
|
//
|
|
// ```
|
|
// var tc *TaskConfig
|
|
// hclutils.NewConfigParser(spec).ParseHCL(t, configString, &tc)
|
|
// ```
|
|
func (b *HCLParser) ParseHCL(t *testing.T, configStr string, out interface{}) {
|
|
config := HclConfigToInterface(t, configStr)
|
|
b.parse(t, config, out)
|
|
}
|
|
|
|
func (b *HCLParser) parse(t *testing.T, config, out interface{}) {
|
|
decSpec, diags := hclspecutils.Convert(b.spec)
|
|
require.Empty(t, diags)
|
|
|
|
ctyValue, diag, errs := ParseHclInterface(config, decSpec, b.vars)
|
|
if len(errs) > 1 {
|
|
t.Error("unexpected errors parsing file")
|
|
for _, err := range errs {
|
|
t.Errorf(" * %v", err)
|
|
|
|
}
|
|
t.FailNow()
|
|
}
|
|
require.Empty(t, diag)
|
|
|
|
// encode
|
|
dtc := &drivers.TaskConfig{}
|
|
require.NoError(t, dtc.EncodeDriverConfig(ctyValue))
|
|
|
|
// decode
|
|
require.NoError(t, dtc.DecodeDriverConfig(out))
|
|
}
|
|
|
|
func HclConfigToInterface(t *testing.T, config string) interface{} {
|
|
t.Helper()
|
|
|
|
// Parse as we do in the jobspec parser
|
|
root, err := hcl.Parse(config)
|
|
if err != nil {
|
|
t.Fatalf("failed to hcl parse the config: %v", err)
|
|
}
|
|
|
|
// Top-level item should be a list
|
|
list, ok := root.Node.(*ast.ObjectList)
|
|
if !ok {
|
|
t.Fatalf("root should be an object")
|
|
}
|
|
|
|
var m map[string]interface{}
|
|
if err := hcl.DecodeObject(&m, list.Items[0]); err != nil {
|
|
t.Fatalf("failed to decode object: %v", err)
|
|
}
|
|
|
|
var m2 map[string]interface{}
|
|
if err := mapstructure.WeakDecode(m, &m2); err != nil {
|
|
t.Fatalf("failed to weak decode object: %v", err)
|
|
}
|
|
|
|
return m2["config"]
|
|
}
|
|
|
|
func JsonConfigToInterface(t *testing.T, config string) interface{} {
|
|
t.Helper()
|
|
|
|
// Decode from json
|
|
dec := codec.NewDecoderBytes([]byte(config), jsonhandles.JsonHandle)
|
|
|
|
var m map[string]interface{}
|
|
err := dec.Decode(&m)
|
|
if err != nil {
|
|
t.Fatalf("failed to decode: %v", err)
|
|
}
|
|
|
|
return m["Config"]
|
|
}
|