/
config_processor.go
277 lines (226 loc) · 10.7 KB
/
config_processor.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
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
package usecases
import (
"errors"
"fmt"
"github.com/berops/claudie/services/builder/domain/usecases/metrics"
"github.com/prometheus/client_golang/prometheus"
"github.com/rs/zerolog/log"
"sync"
cutils "github.com/berops/claudie/internal/utils"
"github.com/berops/claudie/proto/pb"
"github.com/berops/claudie/services/builder/domain/usecases/utils"
cbox "github.com/berops/claudie/services/context-box/client"
)
// ConfigProcessor will fetch new configs from the context-box service. Each received config will be processed in
// a separate go-routine. If a sync.WaitGroup is supplied it will call the Add(1) and then the Done() method on it
// after the go-routine finishes the work, if nil it will be ignored.
func (u *Usecases) ConfigProcessor(wg *sync.WaitGroup) error {
cboxClient := u.ContextBox.GetClient()
res, err := cbox.GetConfigBuilder(cboxClient)
if err != nil {
return fmt.Errorf("error while getting config from the Context-box: %w", err)
}
config := res.GetConfig()
if config == nil {
return nil
}
wg.Add(1)
go func() {
defer wg.Done()
metrics.InputManifestsProcessedCounter.Inc()
metrics.InputManifestsInProgress.Inc()
defer func() { metrics.InputManifestsInProgress.Dec() }()
logger := cutils.CreateLoggerWithProjectName(config.Name)
clusterView := cutils.NewClusterView(config)
if config.DsChecksum == nil && config.CsChecksum != nil { // all current state needs to be deleted.
metrics.InputManifestInDeletion.Inc()
defer func() { metrics.InputManifestInDeletion.Dec() }()
logger.Info().Msgf("Destroying config")
if err := u.deleteConfig(config, clusterView, cboxClient); err != nil {
metrics.InputManifestsErrorCounter.Inc()
metrics.InputManifestBuildError.With(prometheus.Labels{
metrics.InputManifestLabel: config.Name,
}).Add(1)
logger.Err(err).Msg("Error while destroying config")
if err := utils.SaveConfigWithWorkflowError(config, cboxClient, clusterView); err != nil {
logger.Err(err).Msg("Failed to save error message")
return
}
}
metrics.InputManifestsDeleted.Inc()
metrics.InputManifestBuildError.Delete(prometheus.Labels{
metrics.InputManifestLabel: config.Name,
})
metrics.ClustersDeleted.Add(float64(len(clusterView.CurrentClusters)))
logger.Info().Msgf("Config successfully destroyed")
return
}
// Process each cluster concurrently through the Claudie workflow.
if err := cutils.ConcurrentExec(clusterView.AllClusters(), func(_ int, clusterName string) error {
metrics.ClusterProcessedCounter.Inc()
metrics.LoadBalancersProcessedCounter.Add(float64(len(clusterView.DesiredLoadbalancers[clusterName])))
metrics.ClustersInProgress.Inc()
defer func() { metrics.ClustersInProgress.Dec() }()
metrics.LoadBalancersInProgress.Add(float64(len(clusterView.DesiredLoadbalancers[clusterName])))
defer func(c int) { metrics.LoadBalancersInProgress.Add(float64(-c)) }(len(clusterView.DesiredLoadbalancers[clusterName]))
logger := cutils.CreateLoggerWithClusterName(clusterName)
// Handle deletion of a single cluster as a separate step.
if clusterView.DesiredClusters[clusterName] == nil {
metrics.ClustersDeleted.Inc()
metrics.ClustersInDeletion.Inc()
defer func() { metrics.ClustersInDeletion.Dec() }()
if err := u.deleteCluster(config.Name, clusterName, clusterView, cboxClient); err != nil {
clusterView.SetWorkflowError(clusterName, err)
logger.Err(err).Msg("Error while destroying cluster")
return err
}
clusterView.RemoveCurrentState(clusterName)
clusterView.SetWorkflowDone(clusterName)
logger.Info().Msg("Finished workflow for cluster")
return u.ContextBox.SaveWorkflowState(config.Name, clusterName, clusterView.ClusterWorkflows[clusterName], cboxClient)
}
var (
// Calculate difference between desired state and current state
diff = utils.Diff(
clusterView.CurrentClusters[clusterName],
clusterView.DesiredClusters[clusterName],
clusterView.Loadbalancers[clusterName],
clusterView.DesiredLoadbalancers[clusterName],
)
stages = diff.Stages() + 1 // + 1 as we start indexing from 1.
currentStage = 0
)
// If difference has intermediate representation of states, apply it before real desired state.
if diff.IR != nil {
currentStage++
clusterView.ClusterWorkflows[clusterName].Description = fmt.Sprintf("Processing stage [%d/%d]", currentStage, stages)
logger.Info().Msgf("Processing stage [%d/%d] for cluster", currentStage, stages)
ctx, err := u.applyIR(config.Name, clusterName, clusterView, cboxClient, diff)
if err != nil {
logger.Err(err).Msg("Failed to build cluster")
clusterView.SetWorkflowError(clusterName, err)
return err
}
logger.Info().Msgf("Finished building [%d/%d] stage for cluster", currentStage, stages)
clusterView.UpdateCurrentState(clusterName, ctx.DesiredCluster, ctx.DesiredLoadbalancers)
// Carry over metadata and other nodepool info.
utils.UpdateNodePoolInfo(ctx.DesiredCluster.ClusterInfo.NodePools, clusterView.DesiredClusters[clusterName].ClusterInfo.NodePools)
}
// If difference between states replaces control plane, update API endpoint.
if diff.ControlPlaneWithAPIEndpointReplace {
currentStage++
clusterView.ClusterWorkflows[clusterName].Description = fmt.Sprintf("Processing stage [%d/%d]", currentStage, stages)
logger.Info().Msgf("Processing stage [%d/%d] for cluster", currentStage, stages)
if err := u.applyAPIEndpointReplacement(config.Name, clusterName, clusterView, cboxClient); err != nil {
clusterView.SetWorkflowError(clusterName, err)
logger.Err(err).Msg("Failed to build cluster")
}
logger.Info().Msgf("Finished building [%d/%d] stage for cluster", currentStage, stages)
}
// If difference between states results in some nodes being deleted, delete them.
if len(diff.ToDelete) > 0 {
metrics.K8sDeletingNodesInProgress.With(prometheus.Labels{
metrics.K8sClusterLabel: clusterName,
metrics.InputManifestLabel: config.Name,
}).Add(float64(cutils.Sum(diff.ToDelete)))
defer func(c int) {
metrics.K8sDeletingNodesInProgress.With(prometheus.Labels{
metrics.K8sClusterLabel: clusterName,
metrics.InputManifestLabel: config.Name,
}).Add(-float64(c))
}(cutils.Sum(diff.ToDelete))
currentStage++
clusterView.ClusterWorkflows[clusterName].Description = fmt.Sprintf("Processing stage [%d/%d]", currentStage, stages)
logger.Info().Msgf("Processing stage [%d/%d] for cluster", currentStage, stages)
clusterView.ClusterWorkflows[clusterName].Stage = pb.Workflow_DELETE_NODES
if err := u.ContextBox.SaveWorkflowState(config.Name, clusterName, clusterView.ClusterWorkflows[clusterName], cboxClient); err != nil {
clusterView.SetWorkflowError(clusterName, err)
return err
}
logger.Info().Msgf("Deleting nodes from cluster")
cluster, err := u.deleteNodes(clusterView.CurrentClusters[clusterName], clusterView.DesiredClusters[clusterName], diff.ToDelete)
if err != nil {
clusterView.SetWorkflowError(clusterName, err)
logger.Err(err).Msgf("Failed to delete nodes")
return err
}
clusterView.CurrentClusters[clusterName] = cluster
}
// Apply desired state of the infrastructure after all previous steps (if any required).
message := "Processing cluster"
if diff.Stages() > 0 {
currentStage++
clusterView.ClusterWorkflows[clusterName].Description = fmt.Sprintf("Processing stage [%d/%d]", currentStage, stages)
message = fmt.Sprintf("Processing stage [%d/%d] for cluster", currentStage, stages)
}
logger.Info().Msgf(message)
ctx := &utils.BuilderContext{
ProjectName: config.Name,
CurrentCluster: clusterView.CurrentClusters[clusterName],
DesiredCluster: clusterView.DesiredClusters[clusterName],
CurrentLoadbalancers: clusterView.Loadbalancers[clusterName],
DesiredLoadbalancers: clusterView.DesiredLoadbalancers[clusterName],
DeletedLoadBalancers: clusterView.DeletedLoadbalancers[clusterName],
Workflow: clusterView.ClusterWorkflows[clusterName],
}
if ctx, err = u.buildCluster(ctx, cboxClient); err != nil {
clusterView.UpdateCurrentState(clusterName, ctx.DesiredCluster, ctx.DesiredLoadbalancers)
// Save state if error failed to build infrastructure.
if errors.Is(err, ErrFailedToBuildInfrastructure) {
clusterView.UpdateCurrentState(clusterName, ctx.CurrentCluster, ctx.CurrentLoadbalancers)
}
clusterView.SetWorkflowError(clusterName, err)
logger.Err(err).Msg("Failed to build cluster")
return err
}
clusterView.UpdateCurrentState(clusterName, ctx.DesiredCluster, ctx.DesiredLoadbalancers)
clusterView.UpdateDesiredState(clusterName, ctx.DesiredCluster, ctx.DesiredLoadbalancers)
if len(clusterView.DeletedLoadbalancers[clusterName]) > 0 {
// Perform the deletion of loadbalancers as this won't be handled by the buildCluster Workflow.
// The BuildInfrastructure in terraformer only performs creation/update for Lbs.
deleteCtx := &utils.BuilderContext{
ProjectName: config.Name,
CurrentLoadbalancers: clusterView.DeletedLoadbalancers[clusterName],
Workflow: clusterView.ClusterWorkflows[clusterName],
}
if err := u.destroyCluster(deleteCtx, cboxClient); err != nil {
clusterView.SetWorkflowError(clusterName, err)
logger.Err(err).Msg("Error while destroying cluster")
return err
}
}
// Workflow finished.
clusterView.SetWorkflowDone(clusterName)
if err := u.ContextBox.SaveWorkflowState(config.Name, clusterName, ctx.Workflow, cboxClient); err != nil {
clusterView.SetWorkflowError(clusterName, err)
logger.Err(err).Msg("failed to save workflow for cluster")
return err
}
logger.Info().Msg("Finished building cluster")
return nil
}); err != nil {
metrics.InputManifestsErrorCounter.Inc()
metrics.InputManifestBuildError.With(prometheus.Labels{
metrics.InputManifestLabel: config.Name,
}).Add(1)
logger.Err(err).Msg("Error encountered while processing config")
// Even if the config fails to build, merge the changes as it might be in an in-between state
// in order to be able to delete it later.
clusterView.MergeChanges(config)
if err := utils.SaveConfigWithWorkflowError(config, cboxClient, clusterView); err != nil {
log.Err(err).Msg("Failed to save error message")
}
return
}
// Propagate all the changes to the config.
clusterView.MergeChanges(config)
// Update the config and store it to the DB.
logger.Debug().Msg("Saving the config")
if err := cbox.SaveConfigBuilder(cboxClient, &pb.SaveConfigRequest{Config: config}); err != nil {
logger.Err(err).Msg("Error while saving the config")
return
}
logger.Info().Msgf("Config finished building")
}()
return nil
}