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
|
class KubernetesService < DeploymentService
include Gitlab::CurrentSettings
include Gitlab::Kubernetes
include ReactiveCaching
self.reactive_cache_key = ->(service) { [service.class.model_name.singular, service.project_id] }
# Namespace defaults to the project path, but can be overridden in case that
# is an invalid or inappropriate name
prop_accessor :namespace
# Access to kubernetes is directly through the API
prop_accessor :api_url
# Bearer authentication
# TODO: user/password auth, client certificates
prop_accessor :token
# Provide a custom CA bundle for self-signed deployments
prop_accessor :ca_pem
with_options presence: true, if: :activated? do
validates :api_url, url: true
validates :token
end
validates :namespace,
allow_blank: true,
length: 1..63,
if: :activated?,
format: {
with: Gitlab::Regex.kubernetes_namespace_regex,
message: Gitlab::Regex.kubernetes_namespace_regex_message
}
after_save :clear_reactive_cache!
def initialize_properties
self.properties = {} if properties.nil?
end
def title
'Kubernetes'
end
def description
'Kubernetes / Openshift integration'
end
def help
'To enable terminal access to Kubernetes environments, label your ' \
'deployments with `app=$CI_ENVIRONMENT_SLUG`'
end
def self.to_param
'kubernetes'
end
def fields
[
{ type: 'text',
name: 'namespace',
title: 'Kubernetes namespace',
placeholder: namespace_placeholder },
{ type: 'text',
name: 'api_url',
title: 'API URL',
placeholder: 'Kubernetes API URL, like https://kube.example.com/' },
{ type: 'text',
name: 'token',
title: 'Service token',
placeholder: 'Service token' },
{ type: 'textarea',
name: 'ca_pem',
title: 'Custom CA bundle',
placeholder: 'Certificate Authority bundle (PEM format)' }
]
end
def actual_namespace
if namespace.present?
namespace
else
default_namespace
end
end
# Check we can connect to the Kubernetes API
def test(*args)
kubeclient = build_kubeclient!
kubeclient.discover
{ success: kubeclient.discovered, result: "Checked API discovery endpoint" }
rescue => err
{ success: false, result: err }
end
def predefined_variables
variables = [
{ key: 'KUBE_URL', value: api_url, public: true },
{ key: 'KUBE_TOKEN', value: token, public: false },
{ key: 'KUBE_NAMESPACE', value: actual_namespace, public: true }
]
if ca_pem.present?
variables << { key: 'KUBE_CA_PEM', value: ca_pem, public: true }
variables << { key: 'KUBE_CA_PEM_FILE', value: ca_pem, public: true, file: true }
end
variables
end
# Constructs a list of terminals from the reactive cache
#
# Returns nil if the cache is empty, in which case you should try again a
# short time later
def terminals(environment)
with_reactive_cache do |data|
pods = data.fetch(:pods, nil)
filter_pods(pods, app: environment.slug).
flat_map { |pod| terminals_for_pod(api_url, actual_namespace, pod) }.
each { |terminal| add_terminal_auth(terminal, terminal_auth) }
end
end
# Caches all pods in the namespace so other calls don't need to block on
# network access.
def calculate_reactive_cache
return unless active? && project && !project.pending_delete?
kubeclient = build_kubeclient!
# Store as hashes, rather than as third-party types
pods = begin
kubeclient.get_pods(namespace: actual_namespace).as_json
rescue KubeException => err
raise err unless err.error_code == 404
[]
end
# We may want to cache extra things in the future
{ pods: pods }
end
TEMPLATE_PLACEHOLDER = 'Kubernetes namespace'.freeze
private
def namespace_placeholder
default_namespace || TEMPLATE_PLACEHOLDER
end
def default_namespace
"#{project.path}-#{project.id}" if project.present?
end
def build_kubeclient!(api_path: 'api', api_version: 'v1')
raise "Incomplete settings" unless api_url && actual_namespace && token
::Kubeclient::Client.new(
join_api_url(api_path),
api_version,
auth_options: kubeclient_auth_options,
ssl_options: kubeclient_ssl_options,
http_proxy_uri: ENV['http_proxy']
)
end
def kubeclient_ssl_options
opts = { verify_ssl: OpenSSL::SSL::VERIFY_PEER }
if ca_pem.present?
opts[:cert_store] = OpenSSL::X509::Store.new
opts[:cert_store].add_cert(OpenSSL::X509::Certificate.new(ca_pem))
end
opts
end
def kubeclient_auth_options
{ bearer_token: token }
end
def join_api_url(*parts)
url = URI.parse(api_url)
prefix = url.path.sub(%r{/+\z}, '')
url.path = [prefix, *parts].join("/")
url.to_s
end
def terminal_auth
{
token: token,
ca_pem: ca_pem,
max_session_time: current_application_settings.terminal_max_session_time
}
end
end
|
