Hot-keys on this page

r m x p   toggle line displays

j k   next/prev highlighted chunk

0   (zero) top of page

1   (one) first highlighted chunk

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

#    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. 

 

"""Magnum Kubernetes RPC handler.""" 

 

import tempfile 

 

from magnum.common import exception 

from magnum.openstack.common._i18n import _LE 

from magnum.openstack.common import log as logging 

from magnum.openstack.common import utils 

 

LOG = logging.getLogger(__name__) 

 

 

def _k8s_create(api_address, resource): 

    data = resource.manifest 

    definition_url = resource.manifest_url 

    if data is not None: 

        return _k8s_create_with_data(api_address, data) 

    else: 

        return _k8s_create_with_path(api_address, definition_url) 

 

 

def _k8s_create_with_path(api_address, resource_file): 

    return utils.trycmd('kubectl', 'create', 

                        '-s', api_address, 

                        '-f', resource_file) 

 

 

def _k8s_create_with_data(api_address, resource_data): 

    with tempfile.NamedTemporaryFile() as f: 

        f.write(resource_data) 

        f.flush() 

        return _k8s_create_with_path(api_address, f.name) 

 

 

def _k8s_update(api_address, resource): 

    data = resource.manifest 

    definition_url = resource.manifest_url 

    if data is not None: 

        return _k8s_update_with_data(api_address, data) 

    else: 

        return _k8s_update_with_path(api_address, definition_url) 

 

 

def _k8s_update_with_path(api_address, resource_file): 

    return utils.trycmd('kubectl', 'update', 

                        '-s', api_address, 

                        '-f', resource_file) 

 

 

def _k8s_update_with_data(api_address, resource_data): 

    with tempfile.NamedTemporaryFile() as f: 

        f.write(resource_data) 

        f.flush() 

        return _k8s_update_with_path(api_address, f.name) 

 

 

class KubeClient(object): 

    """These are the backend operations.  They are executed by the backend 

         service.  API calls via AMQP (within the ReST API) trigger the 

         handlers to be called. 

 

         This handler acts as an interface to executes kubectl command line 

         services. 

    """ 

 

    def __init__(self): 

        super(KubeClient, self).__init__() 

 

    def service_create(self, api_address, service): 

        LOG.debug("service_create with contents %s" % service.as_dict()) 

        try: 

            out, err = _k8s_create(api_address, service) 

 

            if err: 

                return False 

        except Exception as e: 

            LOG.error(_LE("Couldn't create service with contents %(content)s " 

                          "due to error %(error)s") % 

                         {'content': service, 'error': e}) 

            return False 

        return True 

 

    def service_update(self, api_address, service): 

        LOG.debug("service_update with contents %s" % service.as_dict()) 

        try: 

            out, err = _k8s_update(api_address, service) 

 

            if err: 

                return False 

        except Exception as e: 

            LOG.error(_LE("Couldn't update service with contents %(content)s " 

                          "due to error %(error)s") % 

                         {'content': service, 'error': e}) 

            return False 

        return True 

 

    def service_delete(self, api_address, name): 

        LOG.debug("service_delete %s" % name) 

        try: 

            out, err = utils.trycmd('kubectl', 'delete', 'service', name, 

                                    '-s', api_address) 

115            if err: 

                return False 

        except Exception as e: 

            LOG.error(_LE("Couldn't delete service %(service)s due to error " 

                          "%(error)s") % {'service': name, 'error': e}) 

            return False 

        return True 

 

    # Pod Operations 

    def pod_create(self, api_address, pod): 

        LOG.debug("pod_create contents %s" % pod.as_dict()) 

        try: 

            out, err = _k8s_create(api_address, pod) 

 

            if err: 

                return False 

        except Exception as e: 

            LOG.error(_LE("Couldn't create pod with contents %(content)s " 

                          "due to error %(error)s") % 

                         {'content': pod, 'error': e}) 

            return False 

        return True 

 

    def pod_update(self, api_address, pod): 

        LOG.debug("pod_update contents %s" % pod.as_dict()) 

        try: 

            out, err = _k8s_update(api_address, pod) 

 

            if err: 

                return False 

        except Exception as e: 

            LOG.error(_LE("Couldn't update pod with %(content)s due to error " 

                          "%(error)s") % {'content': pod, 'error': e}) 

            return False 

        return True 

 

    def pod_delete(self, api_address, name): 

        LOG.debug("pod_delete %s" % name) 

        try: 

            out, err = utils.trycmd('kubectl', 'delete', 'pod', name, 

                                    '-s', api_address,) 

        except Exception as e: 

            LOG.error(_LE("Couldn't delete pod %(pod)s due to error " 

                          "%(error)s") % {'pod': name, 'error': e}) 

            return False 

 

        if err: 

            if ('"%s" not found' % name) in err: 

                raise exception.PodNotFound(pod=name) 

            else: 

                return False 

 

        return True 

 

    # Replication Controller Operations 

    def rc_create(self, api_address, rc): 

        LOG.debug("rc_create contents %s" % rc.as_dict()) 

        try: 

            out, err = _k8s_create(api_address, rc) 

 

            if err: 

                return False 

        except Exception as e: 

            LOG.error(_LE("Couldn't create rc with contents %(content)s due " 

                          "error %(error)s") % {'content': rc, 'error': e}) 

            return False 

        return True 

 

    def rc_update(self, api_address, rc): 

        LOG.debug("rc_update contents %s" % rc.as_dict()) 

        try: 

            out, err = _k8s_update(api_address, rc) 

 

            if err: 

                return False 

        except Exception as e: 

            LOG.error(_LE("Couldn't update rc with contents %(content)s due " 

                          "to error %(error)s") % {'content': rc, 'error': e}) 

            return False 

        return True 

 

    def rc_delete(self, api_address, name): 

        LOG.debug("rc_delete %s" % name) 

        try: 

            out, err = utils.trycmd('kubectl', 'delete', 'rc', name, 

                                    '-s', api_address) 

201            if err: 

                return False 

        except Exception as e: 

            LOG.error(_LE("Couldn't delete rc %(rc)s due to error %(error)s") 

                         % {'rc': name, 'error': e}) 

            return False 

        return True