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feat(kubernetes): add user alias (#4008)

* add kubernetes user alias (fixes #3870)

* update config schema

* sort config property alphabetically

* Update README.md

* add test-case for non-matching alias
This commit is contained in:
Tobi 2022-05-30 20:09:53 +02:00 committed by GitHub
parent b8af9a509a
commit df5c2d8836
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4 changed files with 160 additions and 16 deletions

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@ -767,7 +767,8 @@
"disabled": true,
"format": "[$symbol$context( \\($namespace\\))]($style) in ",
"style": "cyan bold",
"symbol": "☸ "
"symbol": "☸ ",
"user_aliases": {}
},
"allOf": [
{
@ -3274,6 +3275,13 @@
"additionalProperties": {
"type": "string"
}
},
"user_aliases": {
"default": {},
"type": "object",
"additionalProperties": {
"type": "string"
}
}
}
},

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@ -2099,6 +2099,7 @@ To enable it, set `disabled` to `false` in your configuration file.
| `format` | `'[$symbol$context( \($namespace\))]($style) in '` | The format for the module. |
| `style` | `"cyan bold"` | The style for the module. |
| `context_aliases` | | Table of context aliases to display. |
| `user_aliases` | | Table of user aliases to display. |
| `disabled` | `true` | Disables the `kubernetes` module. |
### Variables
@ -2126,11 +2127,14 @@ disabled = false
"dev.local.cluster.k8s" = "dev"
".*/openshift-cluster/.*" = "openshift"
"gke_.*_(?P<var_cluster>[\\w-]+)" = "gke-$var_cluster"
[kubernetes.user_aliases]
"dev.local.cluster.k8s" = "dev"
"root/.*" = "root"
```
#### Regex Matching
Additional to simple aliasing, `context_aliases` also supports
Additional to simple aliasing, `context_aliases` and `user_aliases` also supports
extended matching and renaming using regular expressions.
The regular expression must match on the entire kube context,

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@ -10,6 +10,7 @@ pub struct KubernetesConfig<'a> {
pub style: &'a str,
pub disabled: bool,
pub context_aliases: HashMap<String, &'a str>,
pub user_aliases: HashMap<String, &'a str>,
}
impl<'a> Default for KubernetesConfig<'a> {
@ -20,6 +21,7 @@ impl<'a> Default for KubernetesConfig<'a> {
style: "cyan bold",
disabled: true,
context_aliases: HashMap::new(),
user_aliases: HashMap::new(),
}
}
}

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@ -1,6 +1,7 @@
use yaml_rust::YamlLoader;
use std::borrow::Cow;
use std::collections::HashMap;
use std::env;
use std::path;
@ -82,22 +83,30 @@ fn get_kube_ctx_component(
Some(ctx_components)
}
fn get_kube_user<'a>(config: &'a KubernetesConfig, kube_user: &'a str) -> Cow<'a, str> {
return get_alias(&config.user_aliases, kube_user).unwrap_or(Cow::Borrowed(kube_user));
}
fn get_kube_context_name<'a>(config: &'a KubernetesConfig, kube_ctx: &'a str) -> Cow<'a, str> {
if let Some(val) = config.context_aliases.get(kube_ctx) {
return Cow::Borrowed(val);
return get_alias(&config.context_aliases, kube_ctx).unwrap_or(Cow::Borrowed(kube_ctx));
}
fn get_alias<'a>(
aliases: &'a HashMap<String, &'a str>,
alias_candidate: &'a str,
) -> Option<Cow<'a, str>> {
if let Some(val) = aliases.get(alias_candidate) {
return Some(Cow::Borrowed(val));
}
config
.context_aliases
.iter()
.find_map(|(k, v)| {
let re = regex::Regex::new(&format!("^{}$", k)).ok()?;
match re.replace(kube_ctx, *v) {
Cow::Owned(replaced) => Some(Cow::Owned(replaced)),
_ => None,
}
})
.unwrap_or(Cow::Borrowed(kube_ctx))
return aliases.iter().find_map(|(k, v)| {
let re = regex::Regex::new(&format!("^{}$", k)).ok()?;
let replaced = re.replace(alias_candidate, *v);
match replaced {
Cow::Owned(replaced) => Some(Cow::Owned(replaced)),
_ => None,
}
});
}
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
@ -157,7 +166,7 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
"user" => kube_user.and_then(|ctx| {
ctx.as_ref().map(|kube| {
// unwrap is safe as kube_user only holds kube.user.is_some()
Ok(Cow::Borrowed(kube.user.as_ref().unwrap().as_str()))
Ok(get_kube_user(&config, kube.user.as_ref().unwrap().as_str()))
})
}),
"cluster" => kube_cluster.and_then(|ctx| {
@ -529,6 +538,127 @@ users: []
dir.close()
}
fn base_test_user_alias(
user_name: &str,
config: toml::Value,
expected: &str,
) -> io::Result<()> {
let dir = tempfile::tempdir()?;
let filename = dir.path().join("config");
let mut file = File::create(&filename)?;
file.write_all(
format!(
"
apiVersion: v1
clusters: []
contexts:
- context:
cluster: test_cluster
user: {}
namespace: test_namespace
name: test_context
current-context: test_context
kind: Config
preferences: {{}}
users: []
",
user_name
)
.as_bytes(),
)?;
file.sync_all()?;
let actual = ModuleRenderer::new("kubernetes")
.path(dir.path())
.env("KUBECONFIG", filename.to_string_lossy().as_ref())
.config(config)
.collect();
let expected = Some(format!("{} in ", Color::Cyan.bold().paint(expected)));
assert_eq!(expected, actual);
dir.close()
}
#[test]
fn test_user_alias_simple() -> io::Result<()> {
base_test_user_alias(
"test_user",
toml::toml! {
[kubernetes]
disabled = false
format = "[$symbol$context( \\($user\\))]($style) in "
[kubernetes.user_aliases]
"test_user" = "test_alias"
".*" = "literal match has precedence"
},
"☸ test_context (test_alias)",
)
}
#[test]
fn test_user_alias_regex() -> io::Result<()> {
base_test_user_alias(
"openshift-cluster/user",
toml::toml! {
[kubernetes]
disabled = false
format = "[$symbol$context( \\($user\\))]($style) in "
[kubernetes.user_aliases]
"openshift-cluster/.*" = "test_alias"
},
"☸ test_context (test_alias)",
)
}
#[test]
fn test_user_alias_regex_replace() -> io::Result<()> {
base_test_user_alias(
"gke_infra-user-28cccff6_europe-west4_cluster-1",
toml::toml! {
[kubernetes]
disabled = false
format = "[$symbol$context( \\($user\\))]($style) in "
[kubernetes.user_aliases]
"gke_.*_(?P<cluster>[\\w-]+)" = "example: $cluster"
},
"☸ test_context (example: cluster-1)",
)
}
#[test]
fn test_user_alias_broken_regex() -> io::Result<()> {
base_test_user_alias(
"input",
toml::toml! {
[kubernetes]
disabled = false
format = "[$symbol$context( \\($user\\))]($style) in "
[kubernetes.user_aliases]
"input[.*" = "this does not match"
},
"☸ test_context (input)",
)
}
#[test]
fn test_user_should_use_default_if_no_matching_alias() -> io::Result<()> {
base_test_user_alias(
"gke_infra-user-28cccff6_europe-west4_cluster-1",
toml::toml! {
[kubernetes]
disabled = false
format = "[$symbol$context( \\($user\\))]($style) in "
[kubernetes.user_aliases]
"([A-Z])\\w+" = "this does not match"
"gke_infra-user-28cccff6" = "this does not match"
},
"☸ test_context (gke_infra-user-28cccff6_europe-west4_cluster-1)",
)
}
#[test]
fn test_kube_user() -> io::Result<()> {
let dir = tempfile::tempdir()?;