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|
use yaml_rust::YamlLoader;
use super::{Context, Module, RootModuleConfig};
use crate::configs::openstack::OspConfig;
use crate::formatter::StringFormatter;
use crate::utils;
type Cloud = String;
type Project = String;
fn get_osp_project_from_config(context: &Context, osp_cloud: &str) -> Option<Project> {
// Attempt to follow OpenStack standards for clouds.yaml location:
// 1st = $PWD/clouds.yaml, 2nd = $HOME/.config/openstack/clouds.yaml, 3rd = /etc/openstack/clouds.yaml
let config = [
context.get_env("PWD").map(|pwd| pwd + "/clouds.yaml"),
context.get_home().map(|home| {
home.join(".config/openstack/clouds.yaml")
.display()
.to_string()
}),
Some(String::from("/etc/openstack/clouds.yaml")),
];
config
.iter()
.filter_map(|file| {
let config = utils::read_file(file.as_ref()?).ok()?;
let clouds = YamlLoader::load_from_str(config.as_str()).ok()?;
clouds.get(0)?["clouds"][osp_cloud]["auth"]["project_name"]
.as_str()
.map(ToOwned::to_owned)
})
.find(|s| !s.is_empty())
}
fn get_osp_cloud_and_project(context: &Context) -> (Option<Cloud>, Option<Project>) {
match (
context.get_env("OS_CLOUD"),
context.get_env("OS_PROJECT_NAME"),
) {
(Some(p), Some(r)) => (Some(p), Some(r)),
(None, Some(r)) => (None, Some(r)),
(Some(ref p), None) => (Some(p.to_owned()), get_osp_project_from_config(context, p)),
(None, None) => (None, None),
}
}
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let mut module = context.new_module("openstack");
let config: OspConfig = OspConfig::try_load(module.config);
let (osp_cloud, osp_project) = get_osp_cloud_and_project(context);
osp_cloud.as_ref()?;
let parsed = StringFormatter::new(config.format).and_then(|formatter| {
formatter
.map_meta(|variable, _| match variable {
"symbol" => Some(config.symbol),
_ => None,
})
.map_style(|variable| match variable {
"style" => Some(Ok(config.style)),
_ => None,
})
.map(|variable| match variable {
"cloud" => osp_cloud.as_ref().map(Ok),
"project" => osp_project.as_ref().map(Ok),
_ => None,
})
.parse(None)
});
module.set_segments(match parsed {
Ok(segments) => segments,
Err(error) => {
log::error!("Error in module `openstack`: \n{}", error);
return None;
}
});
Some(module)
}
#[cfg(test)]
mod tests {
use crate::test::ModuleRenderer;
use ansi_term::Color;
use std::fs::File;
use std::io::{self, Write};
#[test]
fn parse_valid_config() -> io::Result<()> {
let dir = tempfile::tempdir()?;
let config_path = dir.path().join("clouds.yaml");
let mut file = File::create(&config_path)?;
file.write_all(
b"---
clouds:
corp:
auth:
auth_url: https://overcloud.example.com:13000/v3
project_name: testproject
identity_api_version: '3'
interface: public
",
)?;
let actual = ModuleRenderer::new("openstack")
.env("PWD", dir.path().to_str().unwrap())
.env("OS_CLOUD", "corp")
.config(toml::toml! {
[openstack]
})
.collect();
let expected = Some(format!(
"on {} ",
Color::Yellow.bold().paint("☁️ corp(testproject)")
));
assert_eq!(actual, expected);
dir.close()
}
#[test]
fn parse_broken_config() -> io::Result<()> {
let dir = tempfile::tempdir()?;
let config_path = dir.path().join("clouds.yaml");
let mut file = File::create(&config_path)?;
file.write_all(
b"---
dummy_yaml
",
)?;
let actual = ModuleRenderer::new("openstack")
.env("PWD", dir.path().to_str().unwrap())
.env("OS_CLOUD", "test")
.config(toml::toml! {
[openstack]
})
.collect();
let expected = Some(format!("on {} ", Color::Yellow.bold().paint("☁️ test")));
assert_eq!(actual, expected);
dir.close()
}
#[test]
fn dont_crash_on_empty_config() -> io::Result<()> {
let dir = tempfile::tempdir()?;
let config_path = dir.path().join("clouds.yaml");
let mut file = File::create(&config_path)?;
file.write_all(b"")?;
drop(file);
let actual = ModuleRenderer::new("openstack")
.env("PWD", dir.path().to_str().unwrap())
.env("OS_CLOUD", "test")
.config(toml::toml! {
[openstack]
})
.collect();
let expected = Some(format!("on {} ", Color::Yellow.bold().paint("☁️ test")));
assert_eq!(actual, expected);
dir.close()
}
}
|
