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1# ============LICENSE_START==================================================== 

2# org.onap.dcaegen2 

3# ============================================================================= 

4# Copyright (c) 2017-2020 AT&T Intellectual Property. All rights reserved. 

5# Copyright (c) 2020 Pantheon.tech. All rights reserved. 

6# ============================================================================= 

7# Licensed under the Apache License, Version 2.0 (the "License"); 

8# you may not use this file except in compliance with the License. 

9# You may obtain a copy of the License at 

10# 

11# http://www.apache.org/licenses/LICENSE-2.0 

12# 

13# Unless required by applicable law or agreed to in writing, software 

14# distributed under the License is distributed on an "AS IS" BASIS, 

15# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

16# See the License for the specific language governing permissions and 

17# limitations under the License. 

18# ============LICENSE_END====================================================== 

19 

20from cloudify import ctx 

21from cloudify.decorators import operation 

22from cloudify.exceptions import NonRecoverableError 

23from dmaapplugin import DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, DMAAP_OWNER 

24from dmaapplugin.dmaaputils import random_string 

25from dmaapcontrollerif.dmaap_requests import DMaaPControllerHandle 

26 

27# Lifecycle operations for DMaaP Data Router feeds 

28 

29@operation 

30def create_feed(**kwargs): 

31 ''' 

32 Create a new data router feed 

33 Expects "feed_name" to be set in node properties 

34 If 'feed_name' is not set or is empty, generates a random one. 

35 Allows "feed_version", "feed_description", "aspr_classification" and "useExisting" as optional properties 

36 (Sets default values if not provided ) 

37 Sets instance runtime properties: 

38 Note that 'useExisting' is a flag indicating whether DBCL will use existing feed if the feed already exists. 

39 - "feed_id" 

40 - "publish_url" 

41 - "log_url" 

42 

43 ''' 

44 try: 

45 # Make sure there's a feed_name 

46 feed_name = ctx.node.properties.get("feed_name") 

47 if not (feed_name and feed_name.strip()): 

48 feed_name = random_string(12) 

49 

50 # Set defaults/placeholders for the optional properties for the feed 

51 if "feed_version" in ctx.node.properties: 

52 feed_version = ctx.node.properties["feed_version"] 

53 else: 

54 feed_version = "0.0" 

55 if "feed_description" in ctx.node.properties: 

56 feed_description = ctx.node.properties["feed_description"] 

57 else: 

58 feed_description = "No description provided" 

59 if "aspr_classification" in ctx.node.properties: 

60 aspr_classification = ctx.node.properties["aspr_classification"] 

61 else: 

62 aspr_classification = "unclassified" 

63 if "useExisting" in ctx.node.properties: 

64 useExisting = ctx.node.properties["useExisting"] 

65 else: 

66 useExisting = False 

67 

68 # Make the request to the controller 

69 dmc = DMaaPControllerHandle(DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, ctx.logger) 

70 ctx.logger.info("Attempting to create feed name {0}".format(feed_name)) 

71 f = dmc.create_feed(feed_name, feed_version, feed_description, aspr_classification, DMAAP_OWNER, useExisting) 

72 f.raise_for_status() 

73 

74 # Capture important properties from the result 

75 feed = f.json() 

76 ctx.instance.runtime_properties["feed_id"] = feed["feedId"] 

77 ctx.instance.runtime_properties["publish_url"] = feed["publishURL"] 

78 ctx.instance.runtime_properties["log_url"] = feed["logURL"] 

79 ctx.logger.info("Created feed name {0} with feed id {1}".format(feed_name, feed["feedId"])) 

80 

81 except Exception as e: 

82 ctx.logger.error("Error creating feed: {er}".format(er=e)) 

83 raise NonRecoverableError(e) 

84 

85 

86@operation 

87def get_existing_feed(**kwargs): 

88 ''' 

89 Find information for an existing data router feed 

90 Expects "feed_id" to be set in node properties -- uniquely identifies the feed 

91 Sets instance runtime properties: 

92 - "feed_id" 

93 - "publish_url" 

94 - "log_url" 

95 ''' 

96 

97 try: 

98 # Make the lookup request to the controller 

99 dmc = DMaaPControllerHandle(DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, ctx.logger) 

100 ctx.logger.info("DMaaPControllerHandle() returned") 

101 feed_id_input = False 

102 if "feed_id" in ctx.node.properties: 

103 feed_id_input = True 

104 f = dmc.get_feed_info(ctx.node.properties["feed_id"]) 

105 elif "feed_name" in ctx.node.properties: 

106 feed_name = ctx.node.properties["feed_name"] 

107 f = dmc.get_feed_info_by_name(feed_name) 

108 if f is None: 

109 ctx.logger.error("Not find existing feed with feed name {0}".format(feed_name)) 

110 raise ValueError("Not find existing feed with feed name " + feed_name) 

111 else: 

112 raise ValueError("Either feed_id or feed_name must be defined to get existing feed") 

113 

114 f.raise_for_status() 

115 

116 # Capture important properties from the result 

117 feed = f.json() 

118 feed_id = feed["feedId"] 

119 ctx.instance.runtime_properties["feed_id"] = feed_id # Just to be consistent with newly-created node, above 

120 ctx.instance.runtime_properties["publish_url"] = feed["publishURL"] 

121 ctx.instance.runtime_properties["log_url"] = feed["logURL"] 

122 if feed_id_input: 

123 ctx.logger.info("Found existing feed with feed id {0}".format(ctx.node.properties["feed_id"])) 

124 else: 

125 ctx.logger.info("Found existing feed with feed name {0}".format(ctx.node.properties["feed_name"])) 

126 

127 except ValueError as e: 

128 ctx.logger.error("{er}".format(er=e)) 

129 raise NonRecoverableError(e) 

130 except Exception as e: 

131 if feed_id_input: 

132 ctx.logger.error("Error getting existing feed id {id}: {er}".format(id=ctx.node.properties["feed_id"],er=e)) 

133 else: 

134 ctx.logger.error("Error getting existing feed name {name}: {er}".format(name=ctx.node.properties["feed_name"],er=e)) 

135 raise NonRecoverableError(e) 

136 

137 

138@operation 

139def delete_feed(**kwargs): 

140 ''' 

141 Delete a feed 

142 Expects "feed_id" to be set on the instance's runtime properties 

143 ''' 

144 try: 

145 # Make the lookup request to the controllerid=ctx.node.properties["feed_id"] 

146 dmc = DMaaPControllerHandle(DMAAP_API_URL, DMAAP_USER, DMAAP_PASS, ctx.logger) 

147 f = dmc.delete_feed(ctx.instance.runtime_properties["feed_id"]) 

148 f.raise_for_status() 

149 ctx.logger.info("Deleting feed id {0}".format(ctx.instance.runtime_properties["feed_id"])) 

150 

151 except Exception as e: 

152 ctx.logger.error("Error deleting feed id {id}: {er}".format(id=ctx.instance.runtime_properties["feed_id"],er=e)) 

153 # don't raise a NonRecoverable error here--let the uninstall workflow continue