aboutsummaryrefslogtreecommitdiffstats
path: root/src/k8splugin/api/instancehandler.go
blob: 3fc514cd0e26b0a9fc0eea5242bd67f8ab6b7113 (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
/*
Copyright 2018 Intel Corporation.
Copyright © 2021 Samsung Electronics
Copyright © 2021 Orange

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 api

import (
	"encoding/json"
	"errors"
	"io"
	"net/http"

	"github.com/onap/multicloud-k8s/src/k8splugin/internal/app"
	log "github.com/onap/multicloud-k8s/src/k8splugin/internal/logutils"

	"github.com/gorilla/mux"
	pkgerrors "github.com/pkg/errors"
)

// Used to store the backend implementation objects
// Also simplifies the mocking needed for unit testing
type instanceHandler struct {
	// Interface that implements the Instance operations
	client app.InstanceManager
}

func (i instanceHandler) validateBody(body interface{}) error {
	switch b := body.(type) {
	case app.InstanceRequest:
		if b.CloudRegion == "" {
			log.Error("CreateVnfRequest Bad Request", log.Fields{
				"cloudRegion": "Missing CloudRegion in POST request",
			})
			werr := pkgerrors.Wrap(errors.New("Invalid/Missing CloudRegion in POST request"), "CreateVnfRequest bad request")
			return werr
		}
		if b.RBName == "" || b.RBVersion == "" {
			log.Error("CreateVnfRequest Bad Request", log.Fields{
				"message":   "One of RBName, RBVersion is missing",
				"RBName":    b.RBName,
				"RBVersion": b.RBVersion,
			})
			werr := pkgerrors.Wrap(errors.New("Invalid/Missing resource bundle parameters in POST request"), "CreateVnfRequest bad request")
			return werr
		}
		if b.ProfileName == "" {
			log.Error("CreateVnfRequest bad request", log.Fields{
				"ProfileName": "Missing profile name in POST request",
			})
			werr := pkgerrors.Wrap(errors.New("Invalid/Missing profile name in POST request"), "CreateVnfRequest bad request")
			return werr
		}
	}
	return nil
}

func (i instanceHandler) createHandler(w http.ResponseWriter, r *http.Request) {
	var resource app.InstanceRequest

	err := json.NewDecoder(r.Body).Decode(&resource)
	switch {
	case err == io.EOF:
		log.Error("Body Empty", log.Fields{
			"error": io.EOF,
		})
		http.Error(w, "Body empty", http.StatusBadRequest)
		return
	case err != nil:
		log.Error("Error unmarshaling Body", log.Fields{
			"error": err,
		})
		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
		return
	}

	// Check body for expected parameters
	err = i.validateBody(resource)
	if err != nil {
		log.Error("Invalid Parameters in Body", log.Fields{
			"error": err,
		})
		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
		return
	}

	resp, err := i.client.Create(resource)
	if err != nil {
		log.Error("Error Creating Resource", log.Fields{
			"error":    err,
			"resource": resource,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(http.StatusCreated)
	err = json.NewEncoder(w).Encode(resp)
	if err != nil {
		log.Error("Error Marshaling Response", log.Fields{
			"error":    err,
			"response": resp,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}

// getHandler retrieves information about an instance via the ID
func (i instanceHandler) getHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	id := vars["instID"]
	var resp interface{}
	var err error

	if r.URL.Query().Get("full") == "true" {
		resp, err = i.client.GetFull(id)
	} else {
		resp, err = i.client.Get(id)
	}

	if err != nil {
		log.Error("Error getting Instance", log.Fields{
			"error": err,
			"id":    id,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(http.StatusOK)
	err = json.NewEncoder(w).Encode(resp)
	if err != nil {
		log.Error("Error Marshaling Response", log.Fields{
			"error":    err,
			"response": resp,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}

// statusHandler retrieves status about an instance via the ID
func (i instanceHandler) statusHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	id := vars["instID"]

	resp, err := i.client.Status(id)
	if err != nil {
		log.Error("Error getting Status", log.Fields{
			"error": err,
			"id":    id,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(http.StatusOK)
	err = json.NewEncoder(w).Encode(resp)
	if err != nil {
		log.Error("Error Marshaling Response", log.Fields{
			"error":    err,
			"response": resp,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}

// queryHandler retrieves information about specified resources for instance
func (i instanceHandler) queryHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	id := vars["instID"]
	apiVersion := r.FormValue("ApiVersion")
	kind := r.FormValue("Kind")
	name := r.FormValue("Name")
	labels := r.FormValue("Labels")
	if apiVersion == "" {
		http.Error(w, "Missing ApiVersion mandatory parameter", http.StatusBadRequest)
		return
	}
	if kind == "" {
		http.Error(w, "Missing Kind mandatory parameter", http.StatusBadRequest)
		return
	}
	resp, err := i.client.Query(id, apiVersion, kind, name, labels)
	if err != nil {
		log.Error("Error getting Query results", log.Fields{
			"error":      err,
			"id":         id,
			"apiVersion": apiVersion,
			"kind":       kind,
			"name":       name,
			"labels":     labels,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
	}
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(http.StatusOK)
	err = json.NewEncoder(w).Encode(resp)
	if err != nil {
		log.Error("Error Marshaling Response", log.Fields{
			"error":    err,
			"response": resp,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}

// listHandler retrieves information about an instance via the ID
func (i instanceHandler) listHandler(w http.ResponseWriter, r *http.Request) {

	//If parameters are not provided, they are sent as empty strings
	//Which will list all instances
	rbName := r.FormValue("rb-name")
	rbVersion := r.FormValue("rb-version")
	profileName := r.FormValue("profile-name")

	resp, err := i.client.List(rbName, rbVersion, profileName)
	if err != nil {
		log.Error("Error listing instances", log.Fields{
			"error":        err,
			"rb-name":      rbName,
			"rb-version":   rbVersion,
			"profile-name": profileName,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(http.StatusOK)
	err = json.NewEncoder(w).Encode(resp)
	if err != nil {
		log.Error("Error Marshaling Response", log.Fields{
			"error":    err,
			"response": resp,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}

// deleteHandler method terminates an instance via the ID
func (i instanceHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
	vars := mux.Vars(r)
	id := vars["instID"]

	err := i.client.Delete(id)
	if err != nil {
		log.Error("Error Deleting Instance", log.Fields{
			"error": err,
		})
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(http.StatusAccepted)
}