-
Notifications
You must be signed in to change notification settings - Fork 12
/
config.rs
185 lines (166 loc) · 5.52 KB
/
config.rs
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
//! Types and helpers for `kubeconfig` parsing.
// Lifted from https://github.com/camallo/k8s-client-rs/blob/master/src/kubeconfig.rs
// until a more complete kubernetes client exists
use std::env;
use std::fs::File;
use std::path::{Path, PathBuf};
use serde_yaml;
use openssl::x509::X509;
use openssl::pkey::PKey;
use url::Url;
use url_serde;
use base64;
use errors::*;
/// Configuration to build a Kubernetes client.
#[derive(Debug, Serialize, Deserialize)]
pub struct KubeConfig {
pub kind: Option<String>,
#[serde(rename = "apiVersion")]
pub api_version: Option<String>,
pub preferences: Preferences,
pub clusters: Vec<NamedCluster>,
pub users: Vec<NamedAuthInfo>,
pub contexts: Vec<NamedContext>,
#[serde(rename = "current-context")]
pub current_context: String,
pub extensions: Option<Vec<NamedExtension>>,
}
#[derive(Debug, Serialize, Deserialize)]
pub struct Preferences {
pub colors: Option<bool>,
pub extensions: Option<Vec<NamedExtension>>,
}
#[derive(Debug, Serialize, Deserialize)]
pub struct NamedCluster {
pub name: String,
pub cluster: Cluster,
}
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct Cluster {
#[serde(with = "url_serde")]
pub server: Url,
#[serde(rename = "insecure-skip-tls-verify")]
pub insecure_tls: Option<bool>,
#[serde(rename = "certificate-authority")]
pub ca: Option<String>,
#[serde(rename = "certificate-authority-data")]
ca_data: Option<String>,
pub extensions: Option<Vec<NamedExtension>>,
}
impl Cluster {
pub fn ca_cert(&self) -> Option<X509> {
self.ca_data.as_ref()
.map(|k| base64::decode(&k).expect("Invalid kubeconfig - ca cert is not valid base64"))
.map(|k| X509::from_pem(&k).expect("Invalid kubeconfig - ca cert is not PEM-encoded"))
}
}
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct NamedAuthInfo {
pub name: String,
pub user: AuthInfo,
}
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct AuthInfo {
pub username: Option<String>,
pub password: Option<String>,
pub token: Option<String>,
#[serde(rename = "tokenFile")]
pub token_file: Option<String>,
#[serde(rename = "client-certificate-data")]
client_certificate: Option<String>,
#[serde(rename = "client-key-data")]
pub client_key: Option<String>,
pub impersonate: Option<String>,
//TODO
}
impl AuthInfo {
pub fn client_certificate(&self) -> Option<X509> {
self.client_certificate.as_ref()
.map(|k| base64::decode(&k).expect("Invalid kubeconfig - client cert is not valid base64"))
.map(|k| X509::from_pem(&k).expect("Invalid kubeconfig - client cert is not PEM-encoded"))
}
pub fn client_key(&self) -> Option<PKey> {
self.client_key.as_ref()
.map(|k| base64::decode(&k).expect("Invalid kubeconfig - client key is not valid base64"))
.map(|k| PKey::private_key_from_pem(&k).expect("Invalid kubeconfig - client key is not PEM-encoded"))
}
}
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct NamedContext {
pub name: String,
pub context: Context,
}
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct Context {
pub cluster: String,
pub user: String,
pub namespace: Option<String>,
pub extensions: Option<Vec<Extension>>,
}
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct NamedExtension {
pub name: String,
pub extension: Extension,
}
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct Extension {
pub extension: String,
}
#[derive(Clone, Debug)]
pub struct ClusterContext {
pub name: String,
pub cluster: Cluster,
pub user: AuthInfo,
pub namespace: Option<String>,
pub extensions: Option<Vec<Extension>>,
}
impl KubeConfig {
pub fn load<P: AsRef<Path>>(path: P) -> Result<KubeConfig> {
let f = File::open(path.as_ref()).chain_err(|| "Unable to open kubeconfig file")?;
serde_yaml::from_reader(f).chain_err(|| "Unable to parse kubeconfig file")
}
pub fn context(&self, name: &str) -> Result<ClusterContext> {
let ctxs: Vec<&NamedContext> = self.contexts.iter().filter(|c| c.name == name).collect();
let ctx = match ctxs.len() {
0 => bail!("unknown context {}", name),
1 => &ctxs[0].context,
_ => bail!("ambiguous context {}", name),
};
let clus: Vec<&NamedCluster> = self.clusters
.iter()
.filter(|c| c.name == ctx.cluster)
.collect();
let clu = match clus.len() {
0 => bail!("unknown cluster {}", name),
1 => &clus[0].cluster,
_ => bail!("ambiguous cluster {}", name),
};
let auths: Vec<&NamedAuthInfo> = self.users
.iter()
.filter(|c| c.name == ctx.user)
.collect();
let auth = match auths.len() {
0 => bail!("unknown auth-info {}", name),
1 => &auths[0].user,
_ => bail!("ambiguous auth-info {}", name),
};
let rc = ClusterContext {
name: name.to_string(),
cluster: clu.clone(),
user: auth.clone(),
namespace: ctx.namespace.clone(),
extensions: None,
};
Ok(rc)
}
pub fn default_context(&self) -> Result<ClusterContext> {
let dname = self.current_context.as_ref();
self.context(dname)
}
pub fn default_path() -> PathBuf {
env::home_dir()
.unwrap_or("/root".into())
.join(".kube")
.join("config")
}
}