aboutsummaryrefslogtreecommitdiffstats
path: root/src/rsync/pkg/context/context.go
blob: cc7773b85adeac8c8f4646c7a5faac1801477629 (plain)
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
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
/*
 * Copyright 2020 Intel Corporation, Inc
 *
 * 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 context

import (
	"context"
	"encoding/json"
	"fmt"
	"log"
	"strings"

	"github.com/onap/multicloud-k8s/src/orchestrator/pkg/appcontext"
	"github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/logutils"
	kubeclient "github.com/onap/multicloud-k8s/src/rsync/pkg/client"
	connector "github.com/onap/multicloud-k8s/src/rsync/pkg/connector"
	utils "github.com/onap/multicloud-k8s/src/rsync/pkg/internal"
	status "github.com/onap/multicloud-k8s/src/rsync/pkg/status"
	pkgerrors "github.com/pkg/errors"
	"golang.org/x/sync/errgroup"
	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
)

type CompositeAppContext struct {
	cid interface{}
}

func getRes(ac appcontext.AppContext, name string, app string, cluster string) ([]byte, error) {
	var byteRes []byte
	rh, err := ac.GetResourceHandle(app, cluster, name)
	if err != nil {
		return nil, err
	}
	resval, err := ac.GetValue(rh)
	if err != nil {
		return nil, err
	}
	if resval != "" {
		result := strings.Split(name, "+")
		if result[0] == "" {
			return nil, pkgerrors.Errorf("Resource name is nil %s:", name)
		}
		byteRes = []byte(fmt.Sprintf("%v", resval.(interface{})))
	} else {
		return nil, pkgerrors.Errorf("Resource value is nil %s", name)
	}
	return byteRes, nil
}

func terminateResource(ac appcontext.AppContext, c *kubeclient.Client, name string, app string, cluster string, label string) error {
	res, err := getRes(ac, name, app, cluster)
	if err != nil {
		return err
	}
	if err := c.Delete(res); err != nil {
		logutils.Error("Failed to delete res", logutils.Fields{
			"error":    err,
			"resource": name,
		})
		return err
	}
	logutils.Info("Deleted::", logutils.Fields{
		"cluster":  cluster,
		"resource": name,
	})
	return nil
}

func instantiateResource(ac appcontext.AppContext, c *kubeclient.Client, name string, app string, cluster string, label string) error {
	res, err := getRes(ac, name, app, cluster)
	if err != nil {
		return err
	}
	//Decode the yaml to create a runtime.Object
	unstruct := &unstructured.Unstructured{}
	//Ignore the returned obj as we expect the data in unstruct
	_, err = utils.DecodeYAMLData(string(res), unstruct)
	if err != nil {
		return pkgerrors.Wrap(err, "Decode deployment object error")
	}

	//Add the tracking label to all resources created here
	labels := unstruct.GetLabels()
	//Check if labels exist for this object
	if labels == nil {
		labels = map[string]string{}
	}
	//labels[config.GetConfiguration().KubernetesLabelName] = client.GetInstanceID()
	labels["emco/deployment-id"] = label
	unstruct.SetLabels(labels)

	// This checks if the resource we are creating has a podSpec in it
	// Eg: Deployment, StatefulSet, Job etc..
	// If a PodSpec is found, the label will be added to it too.
	//connector.TagPodsIfPresent(unstruct, client.GetInstanceID())
	utils.TagPodsIfPresent(unstruct, label)
	b, err := unstruct.MarshalJSON()
	if err != nil {
		logutils.Error("Failed to MarshalJSON", logutils.Fields{
			"error":    err,
			"resource": name,
		})
		return err
	}
	if err := c.Apply(b); err != nil {
		logutils.Error("Failed to apply res", logutils.Fields{
			"error":    err,
			"resource": name,
		})
		return err
	}
	logutils.Info("Installed::", logutils.Fields{
		"cluster":  cluster,
		"resource": name,
	})
	return nil
}

func addStatusTracker(c *kubeclient.Client, app string, cluster string, label string) error {

	b, err := status.GetStatusCR(label)
	if err != nil {
		logutils.Error("Failed to get status CR for installing", logutils.Fields{
			"error": err,
			"label": label,
		})
		return err
	}
	if err = c.Apply(b); err != nil {
		logutils.Error("Failed to apply status tracker", logutils.Fields{
			"error":   err,
			"cluster": cluster,
			"app":     app,
			"label":   label,
		})
		return err
	}
	logutils.Info("Status tracker installed::", logutils.Fields{
		"cluster": cluster,
		"app":     app,
		"label":   label,
	})
	return nil
}

func deleteStatusTracker(c *kubeclient.Client, app string, cluster string, label string) error {
	b, err := status.GetStatusCR(label)
	if err != nil {
		logutils.Error("Failed to get status CR for deleting", logutils.Fields{
			"error": err,
			"label": label,
		})
		return err
	}
	if err = c.Delete(b); err != nil {
		logutils.Error("Failed to delete res", logutils.Fields{
			"error": err,
			"app":   app,
			"label": label,
		})
		return err
	}
	logutils.Info("Status tracker deleted::", logutils.Fields{
		"cluster": cluster,
		"app":     app,
		"label":   label,
	})
	return nil
}

type fn func(ac appcontext.AppContext, client *kubeclient.Client, res string, app string, cluster string, label string) error

type statusfn func(client *kubeclient.Client, app string, cluster string, label string) error

func applyFnComApp(cid interface{}, con *connector.Connector, f fn, sfn statusfn, breakonError bool) error {
	ac := appcontext.AppContext{}
	g, _ := errgroup.WithContext(context.Background())
	_, err := ac.LoadAppContext(cid)
	if err != nil {
		return err
	}
	appsOrder, err := ac.GetAppInstruction("order")
	if err != nil {
		return err
	}
	var appList map[string][]string
	json.Unmarshal([]byte(appsOrder.(string)), &appList)
	logutils.Info("appsorder ", logutils.Fields{
		"appsorder": appsOrder,
		"string":    appList,
	})
	id, _ := ac.GetCompositeAppHandle()

	for _, app := range appList["apporder"] {

		appName := app
		results := strings.Split(id.(string), "/")
		label := results[2] + "-" + app
		g.Go(func() error {
			clusterNames, err := ac.GetClusterNames(appName)
			if err != nil {
				return err
			}
			rg, _ := errgroup.WithContext(context.Background())
			for k := 0; k < len(clusterNames); k++ {
				cluster := clusterNames[k]
				err = status.StartClusterWatcher(cluster)
				if err != nil {
					log.Printf("Error starting Cluster Watcher %v: %v\n", cluster, err)
				}
				rg.Go(func() error {
					c, err := con.GetClient(cluster)
					if err != nil {
						logutils.Error("Error in creating kubeconfig client", logutils.Fields{
							"error":   err,
							"cluster": cluster,
							"appName": appName,
						})
						return err
					}
					resorder, err := ac.GetResourceInstruction(appName, cluster, "order")
					if err != nil {
						logutils.Error("Resorder error ", logutils.Fields{"error": err})
						return err
					}
					var aov map[string][]string
					json.Unmarshal([]byte(resorder.(string)), &aov)
					for i, res := range aov["resorder"] {
						err = f(ac, c, res, appName, cluster, label)
						if err != nil {
							logutils.Error("Error in resource %s: %v", logutils.Fields{
								"error":    err,
								"cluster":  cluster,
								"resource": res,
							})
							if breakonError {
								// handle status tracking before exiting if at least one resource got handled
								if i > 0 {
									serr := sfn(c, appName, cluster, label)
									if serr != nil {
										logutils.Warn("Error handling status tracker", logutils.Fields{"error": serr})
									}
								}
								return err
							}
						}
					}
					serr := sfn(c, appName, cluster, label)
					if serr != nil {
						logutils.Warn("Error handling status tracker", logutils.Fields{"error": serr})
					}
					return nil
				})
			}
			if err := rg.Wait(); err != nil {
				logutils.Error("Encountered error in App cluster", logutils.Fields{
					"error": err,
				})
				return err
			}
			return nil
		})
	}
	if err := g.Wait(); err != nil {
		logutils.Error("Encountered error", logutils.Fields{
			"error": err,
		})
		return err
	}
	return nil
}

// InstantiateComApp Instantiate Apps in Composite App
func (instca *CompositeAppContext) InstantiateComApp(cid interface{}) error {
	con := connector.Init(cid)
	err := applyFnComApp(cid, con, instantiateResource, addStatusTracker, true)
	if err != nil {
		logutils.Error("InstantiateComApp unsuccessful", logutils.Fields{"error": err})
		return err
	}
	//Cleanup
	con.RemoveClient()
	return nil
}

// TerminateComApp Terminates Apps in Composite App
func (instca *CompositeAppContext) TerminateComApp(cid interface{}) error {
	con := connector.Init(cid)
	err := applyFnComApp(cid, con, terminateResource, deleteStatusTracker, false)
	if err != nil {
		logutils.Error("TerminateComApp unsuccessful", logutils.Fields{
			"error": err,
		})
		return err
	}
	//Cleanup
	con.RemoveClient()
	return nil
}