-
Notifications
You must be signed in to change notification settings - Fork 90
/
depgraph.go
243 lines (205 loc) · 7.11 KB
/
depgraph.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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
package template
import (
"bytes"
"encoding/json"
"fmt"
"strings"
"text/template"
kotsv1beta1 "github.com/replicatedhq/kots/kotskinds/apis/kots/v1beta1"
)
type depGraph struct {
Dependencies map[string]map[string]struct{}
CertItems map[string]map[string]struct{} // items that use the TLSCert template function. map of certnames to configoptions that provide the certname
KeyItems map[string]map[string]struct{} // items that use the TLSKey template function. map of TLSKey configoptions to the certnames they use
CAItems map[string]map[string]struct{} // items that use the TLSCACert template function. map of canames to configoptions that provide the caname
CAFromCertItems map[string]map[string]struct{} // items that use the TLSCertFromCA template function. map of TLSCertFromCA configoptions to the canames they use
CertFromCACertItems map[string]map[string]struct{} // items that use the TLSCertFromCA template function. map of canames and certnames to configoptions that provide the certname
CAItemsFromKey map[string]map[string]struct{} // items that use the TLSKeyFromCA template function. map of TLSKeyFromCA configoptions to the canames they use
CACertItemsFromKey map[string]map[string]struct{} // items that use the TLSKeyFromCA template function. map of TLSKeyFromCA configoptions to the canames and certnames they use
}
// these config functions are used to add their dependencies to the depGraph
func (d *depGraph) funcMap(parent string) template.FuncMap {
addDepFunc := func(dep string, _ ...string) string {
d.AddDep(parent, dep)
return dep
}
addCertFunc := func(certName string, _ ...string) string {
d.AddCert(parent, certName)
return certName
}
addKeyFunc := func(certName string, _ ...string) string {
d.AddKey(parent, certName)
return certName
}
addCAFunc := func(caName string, _ ...string) string {
d.AddCA(parent, caName)
return caName
}
addCertFromCAFunc := func(caName, certName string, _ ...string) string {
d.AddCertFromCA(parent, caName, certName)
return certName
}
addKeyFromCAFunc := func(caName, certName string, _ ...string) string {
d.AddKeyFromCA(parent, caName, certName)
return certName
}
return template.FuncMap{
"ConfigOption": addDepFunc,
"ConfigOptionIndex": addDepFunc,
"ConfigOptionData": addDepFunc,
"ConfigOptionFilename": addDepFunc,
"ConfigOptionEquals": addDepFunc,
"ConfigOptionNotEquals": addDepFunc,
"TLSCACert": addCAFunc,
"TLSCert": addCertFunc,
"TLSCertFromCA": addCertFromCAFunc,
"TLSKey": addKeyFunc,
"TLSKeyFromCA": addKeyFromCAFunc,
}
}
func (d *depGraph) AddNode(source string) {
if d.Dependencies == nil {
d.Dependencies = make(map[string]map[string]struct{})
}
if _, ok := d.Dependencies[source]; !ok {
d.Dependencies[source] = make(map[string]struct{})
}
}
func (d *depGraph) AddDep(source, newDependency string) {
d.AddNode(source)
d.Dependencies[source][newDependency] = struct{}{}
}
func (d *depGraph) AddCert(source, certName string) {
d.CertItems = addDepGraphItem(d.CertItems, certName, source)
}
func (d *depGraph) AddKey(source, certName string) {
d.KeyItems = addDepGraphItem(d.KeyItems, source, certName)
}
func (d *depGraph) AddCA(source, caName string) {
d.CAItems = addDepGraphItem(d.CAItems, caName, source)
}
func (d *depGraph) AddCertFromCA(source, caName, certName string) {
d.CAFromCertItems = addDepGraphItem(d.CAFromCertItems, source, caName)
d.CertFromCACertItems = addDepGraphItem(d.CertFromCACertItems, caName+certName, source)
}
func (d *depGraph) AddKeyFromCA(source, caName, certName string) {
d.CAItemsFromKey = addDepGraphItem(d.CAItemsFromKey, source, caName)
d.CACertItemsFromKey = addDepGraphItem(d.CACertItemsFromKey, source, caName+certName)
}
func addDepGraphItem(m map[string]map[string]struct{}, key, value string) map[string]map[string]struct{} {
if m == nil {
m = make(map[string]map[string]struct{})
}
if _, ok := m[key]; !ok {
m[key] = make(map[string]struct{})
}
m[key][value] = struct{}{}
return m
}
func (d *depGraph) resolveCertKeys() {
for source, certNameMap := range d.KeyItems {
for certName := range certNameMap {
for certProvider := range d.CertItems[certName] {
if certProvider != source {
d.AddDep(source, certProvider)
}
}
}
}
}
func (d *depGraph) resolveCACerts() {
for source, caNameMap := range d.CAFromCertItems {
for caName := range caNameMap {
for caProvider := range d.CAItems[caName] {
if caProvider != source {
d.AddDep(source, caProvider)
}
}
}
}
}
func (d *depGraph) resolveCACertKeys() {
for source, caNameMap := range d.CAItemsFromKey {
for caName := range caNameMap {
for caProvider := range d.CAItems[caName] {
if caProvider != source {
d.AddDep(source, caProvider)
}
}
}
}
for source, caCertNameMap := range d.CACertItemsFromKey {
for caCertName := range caCertNameMap {
for certProvider := range d.CertFromCACertItems[caCertName] {
if certProvider != source {
d.AddDep(source, certProvider)
}
}
}
}
}
func (d *depGraph) ResolveDep(resolvedDependency string) {
for _, depMap := range d.Dependencies {
delete(depMap, resolvedDependency)
}
delete(d.Dependencies, resolvedDependency)
}
func (d *depGraph) GetHeadNodes() ([]string, error) {
headNodes := []string{}
for node, deps := range d.Dependencies {
if len(deps) == 0 {
headNodes = append(headNodes, node)
}
}
if len(headNodes) == 0 && len(d.Dependencies) != 0 {
waitList := []string{}
for k, v := range d.Dependencies {
depsList := []string{}
for dep := range v {
depsList = append(depsList, fmt.Sprintf("%q", dep))
}
waitItem := fmt.Sprintf(`%q depends on %s`, k, strings.Join(depsList, `, `))
waitList = append(waitList, waitItem)
}
return headNodes, fmt.Errorf("no config options exist with 0 dependencies - %s", strings.Join(waitList, "; "))
}
return headNodes, nil
}
func (d *depGraph) PrintData() string {
return fmt.Sprintf("deps: %+v", d.Dependencies)
}
// returns a deep copy of the dep graph
func (d *depGraph) Copy() (depGraph, error) {
var buf bytes.Buffer
enc := json.NewEncoder(&buf)
dec := json.NewDecoder(&buf)
err := enc.Encode(d)
if err != nil {
return depGraph{}, err
}
depCopy := depGraph{}
err = dec.Decode(&depCopy)
if err != nil {
return depGraph{}, err
}
return depCopy, nil
}
func (d *depGraph) ParseConfigGroup(configGroups []kotsv1beta1.ConfigGroup) error {
for _, configGroup := range configGroups {
for _, configItem := range configGroup.Items {
// add this to the dependency graph
d.AddNode(configItem.Name)
depBuilder := Builder{
Ctx: []Ctx{},
Functs: d.funcMap(configItem.Name),
}
// while builder is normally stateless, the functions it uses within this loop are not
// errors are also discarded as we do not have the full set of template functions available here, and errors from not having those functions are expected
_, _ = depBuilder.String(configItem.Default.String())
_, _ = depBuilder.String(configItem.Value.String())
}
}
d.resolveCertKeys()
d.resolveCACertKeys()
return nil
}