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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
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10
.github/config-schema.json
vendored
10
.github/config-schema.json
vendored
@ -767,7 +767,8 @@
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"disabled": true,
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"format": "[$symbol$context( \\($namespace\\))]($style) in ",
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"style": "cyan bold",
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"symbol": "☸ "
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"symbol": "☸ ",
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"user_aliases": {}
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},
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"allOf": [
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{
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@ -3274,6 +3275,13 @@
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"additionalProperties": {
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"type": "string"
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}
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},
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"user_aliases": {
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"default": {},
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"type": "object",
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"additionalProperties": {
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"type": "string"
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}
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}
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}
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},
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@ -2099,6 +2099,7 @@ To enable it, set `disabled` to `false` in your configuration file.
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| `format` | `'[$symbol$context( \($namespace\))]($style) in '` | The format for the module. |
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| `style` | `"cyan bold"` | The style for the module. |
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| `context_aliases` | | Table of context aliases to display. |
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| `user_aliases` | | Table of user aliases to display. |
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| `disabled` | `true` | Disables the `kubernetes` module. |
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### Variables
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@ -2126,11 +2127,14 @@ disabled = false
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"dev.local.cluster.k8s" = "dev"
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".*/openshift-cluster/.*" = "openshift"
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"gke_.*_(?P<var_cluster>[\\w-]+)" = "gke-$var_cluster"
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[kubernetes.user_aliases]
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"dev.local.cluster.k8s" = "dev"
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"root/.*" = "root"
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```
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#### Regex Matching
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Additional to simple aliasing, `context_aliases` also supports
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Additional to simple aliasing, `context_aliases` and `user_aliases` also supports
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extended matching and renaming using regular expressions.
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The regular expression must match on the entire kube context,
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@ -10,6 +10,7 @@ pub struct KubernetesConfig<'a> {
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pub style: &'a str,
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pub disabled: bool,
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pub context_aliases: HashMap<String, &'a str>,
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pub user_aliases: HashMap<String, &'a str>,
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}
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impl<'a> Default for KubernetesConfig<'a> {
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@ -20,6 +21,7 @@ impl<'a> Default for KubernetesConfig<'a> {
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style: "cyan bold",
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disabled: true,
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context_aliases: HashMap::new(),
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user_aliases: HashMap::new(),
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}
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}
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}
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@ -1,6 +1,7 @@
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use yaml_rust::YamlLoader;
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use std::borrow::Cow;
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use std::collections::HashMap;
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use std::env;
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use std::path;
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@ -82,22 +83,30 @@ fn get_kube_ctx_component(
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Some(ctx_components)
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}
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fn get_kube_user<'a>(config: &'a KubernetesConfig, kube_user: &'a str) -> Cow<'a, str> {
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return get_alias(&config.user_aliases, kube_user).unwrap_or(Cow::Borrowed(kube_user));
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}
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fn get_kube_context_name<'a>(config: &'a KubernetesConfig, kube_ctx: &'a str) -> Cow<'a, str> {
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if let Some(val) = config.context_aliases.get(kube_ctx) {
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return Cow::Borrowed(val);
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return get_alias(&config.context_aliases, kube_ctx).unwrap_or(Cow::Borrowed(kube_ctx));
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}
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fn get_alias<'a>(
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aliases: &'a HashMap<String, &'a str>,
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alias_candidate: &'a str,
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) -> Option<Cow<'a, str>> {
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if let Some(val) = aliases.get(alias_candidate) {
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return Some(Cow::Borrowed(val));
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}
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config
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.context_aliases
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.iter()
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.find_map(|(k, v)| {
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let re = regex::Regex::new(&format!("^{}$", k)).ok()?;
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match re.replace(kube_ctx, *v) {
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Cow::Owned(replaced) => Some(Cow::Owned(replaced)),
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_ => None,
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}
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})
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.unwrap_or(Cow::Borrowed(kube_ctx))
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return aliases.iter().find_map(|(k, v)| {
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let re = regex::Regex::new(&format!("^{}$", k)).ok()?;
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let replaced = re.replace(alias_candidate, *v);
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match replaced {
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Cow::Owned(replaced) => Some(Cow::Owned(replaced)),
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_ => None,
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}
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});
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}
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pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
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@ -157,7 +166,7 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
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"user" => kube_user.and_then(|ctx| {
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ctx.as_ref().map(|kube| {
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// unwrap is safe as kube_user only holds kube.user.is_some()
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Ok(Cow::Borrowed(kube.user.as_ref().unwrap().as_str()))
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Ok(get_kube_user(&config, kube.user.as_ref().unwrap().as_str()))
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})
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}),
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"cluster" => kube_cluster.and_then(|ctx| {
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@ -529,6 +538,127 @@ users: []
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dir.close()
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}
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fn base_test_user_alias(
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user_name: &str,
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config: toml::Value,
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expected: &str,
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) -> io::Result<()> {
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let dir = tempfile::tempdir()?;
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let filename = dir.path().join("config");
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let mut file = File::create(&filename)?;
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file.write_all(
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format!(
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"
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apiVersion: v1
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clusters: []
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contexts:
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- context:
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cluster: test_cluster
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user: {}
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namespace: test_namespace
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name: test_context
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current-context: test_context
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kind: Config
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preferences: {{}}
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users: []
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",
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user_name
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)
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.as_bytes(),
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)?;
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file.sync_all()?;
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let actual = ModuleRenderer::new("kubernetes")
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.path(dir.path())
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.env("KUBECONFIG", filename.to_string_lossy().as_ref())
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.config(config)
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.collect();
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let expected = Some(format!("{} in ", Color::Cyan.bold().paint(expected)));
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assert_eq!(expected, actual);
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dir.close()
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}
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#[test]
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fn test_user_alias_simple() -> io::Result<()> {
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base_test_user_alias(
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"test_user",
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toml::toml! {
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[kubernetes]
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disabled = false
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format = "[$symbol$context( \\($user\\))]($style) in "
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[kubernetes.user_aliases]
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"test_user" = "test_alias"
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".*" = "literal match has precedence"
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},
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"☸ test_context (test_alias)",
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)
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}
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#[test]
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fn test_user_alias_regex() -> io::Result<()> {
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base_test_user_alias(
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"openshift-cluster/user",
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toml::toml! {
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[kubernetes]
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disabled = false
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format = "[$symbol$context( \\($user\\))]($style) in "
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[kubernetes.user_aliases]
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"openshift-cluster/.*" = "test_alias"
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},
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"☸ test_context (test_alias)",
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)
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}
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#[test]
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fn test_user_alias_regex_replace() -> io::Result<()> {
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base_test_user_alias(
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"gke_infra-user-28cccff6_europe-west4_cluster-1",
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toml::toml! {
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[kubernetes]
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disabled = false
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format = "[$symbol$context( \\($user\\))]($style) in "
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[kubernetes.user_aliases]
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"gke_.*_(?P<cluster>[\\w-]+)" = "example: $cluster"
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},
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"☸ test_context (example: cluster-1)",
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)
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}
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#[test]
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fn test_user_alias_broken_regex() -> io::Result<()> {
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base_test_user_alias(
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"input",
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toml::toml! {
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[kubernetes]
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disabled = false
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format = "[$symbol$context( \\($user\\))]($style) in "
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[kubernetes.user_aliases]
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"input[.*" = "this does not match"
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},
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"☸ test_context (input)",
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)
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}
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#[test]
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fn test_user_should_use_default_if_no_matching_alias() -> io::Result<()> {
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base_test_user_alias(
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"gke_infra-user-28cccff6_europe-west4_cluster-1",
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toml::toml! {
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[kubernetes]
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disabled = false
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format = "[$symbol$context( \\($user\\))]($style) in "
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[kubernetes.user_aliases]
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"([A-Z])\\w+" = "this does not match"
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"gke_infra-user-28cccff6" = "this does not match"
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},
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"☸ test_context (gke_infra-user-28cccff6_europe-west4_cluster-1)",
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)
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}
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#[test]
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fn test_kube_user() -> io::Result<()> {
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let dir = tempfile::tempdir()?;
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