-
Notifications
You must be signed in to change notification settings - Fork 41
/
load.go
131 lines (112 loc) · 3.65 KB
/
load.go
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
/*
Copyright 2022 The KubeVela Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package template
import (
"context"
"embed"
"fmt"
"github.com/pkg/errors"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/client"
)
var (
//go:embed static
templateFS embed.FS
)
const (
templateDir = "static"
)
type namespaceContextKey int
const (
// DefinitionNamespace is context key to define workflow run namespace
DefinitionNamespace namespaceContextKey = iota
// SystemDefinitionNamespace is the system definition namespace
systemDefinitionNamespace string = "vela-system"
)
// Loader load task definition template.
type Loader interface {
LoadTemplate(ctx context.Context, name string) (string, error)
}
// WorkflowStepLoader load workflowStep task definition template.
type WorkflowStepLoader struct {
loadDefinition func(ctx context.Context, capName string) (string, error)
}
// LoadTemplate gets the workflow step definition.
func (loader *WorkflowStepLoader) LoadTemplate(ctx context.Context, name string) (string, error) {
files, err := templateFS.ReadDir(templateDir)
if err != nil {
return "", err
}
staticFilename := name + ".cue"
for _, file := range files {
if staticFilename == file.Name() {
fileName := fmt.Sprintf("%s/%s", templateDir, file.Name())
content, err := templateFS.ReadFile(fileName)
return string(content), err
}
}
return loader.loadDefinition(ctx, name)
}
// NewWorkflowStepTemplateLoader create a task template loader.
func NewWorkflowStepTemplateLoader(client client.Client) Loader {
return &WorkflowStepLoader{
loadDefinition: func(ctx context.Context, capName string) (string, error) {
return getDefinitionTemplate(ctx, client, capName)
},
}
}
type def struct {
Spec struct {
Schematic struct {
CUE struct {
Template string `json:"template"`
} `json:"cue"`
} `json:"schematic"`
} `json:"spec,omitempty"`
}
func getDefinitionTemplate(ctx context.Context, cli client.Client, definitionName string) (string, error) {
const (
definitionAPIVersion = "core.oam.dev/v1beta1"
kindWorkflowStepDefinition = "WorkflowStepDefinition"
)
definition := &unstructured.Unstructured{}
definition.SetAPIVersion(definitionAPIVersion)
definition.SetKind(kindWorkflowStepDefinition)
ns := getDefinitionNamespaceWithCtx(ctx)
if err := cli.Get(ctx, types.NamespacedName{Name: definitionName, Namespace: ns}, definition); err != nil {
if apierrors.IsNotFound(err) {
if err := cli.Get(ctx, types.NamespacedName{Name: definitionName, Namespace: systemDefinitionNamespace}, definition); err != nil {
return "", err
}
} else {
return "", err
}
}
d := new(def)
if err := runtime.DefaultUnstructuredConverter.FromUnstructured(definition.Object, d); err != nil {
return "", errors.Wrap(err, "invalid workflow step definition")
}
return d.Spec.Schematic.CUE.Template, nil
}
func getDefinitionNamespaceWithCtx(ctx context.Context) string {
var ns string
if run := ctx.Value(DefinitionNamespace); run == nil {
ns = systemDefinitionNamespace
} else {
ns = run.(string)
}
return ns
}