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|
use std::path::PathBuf;
use super::{Context, Module, RootModuleConfig};
use crate::configs::docker_context::DockerContextConfig;
use crate::formatter::StringFormatter;
use crate::utils;
/// Creates a module with the currently active Docker context
///
/// Will display the Docker context if the following criteria are met:
/// - There is a file named `$HOME/.docker/config.json`
/// - Or a file named `$DOCKER_CONFIG/config.json`
/// - The file is JSON and contains a field named `currentContext`
/// - The value of `currentContext` is not `default`
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let mut module = context.new_module("docker_context");
let config: DockerContextConfig = DockerContextConfig::try_load(module.config);
if config.only_with_files
&& !context
.try_begin_scan()?
.set_files(&["docker-compose.yml", "docker-compose.yaml", "Dockerfile"])
.is_match()
{
return None;
}
let docker_config = PathBuf::from(
&context
.get_env_os("DOCKER_CONFIG")
.unwrap_or(context.get_home()?.join(".docker").into_os_string()),
)
.join("config.json");
if !docker_config.exists() {
return None;
}
let json = utils::read_file(docker_config).ok()?;
let parsed_json = serde_json::from_str(&json).ok()?;
match parsed_json {
serde_json::Value::Object(root) => {
let current_context = root.get("currentContext")?;
match current_context {
serde_json::Value::String(ctx) => {
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 {
"context" => Some(Ok(ctx)),
_ => None,
})
.parse(None)
});
module.set_segments(match parsed {
Ok(segments) => segments,
Err(error) => {
log::warn!("Error in module `docker_context`:\n{}", error);
return None;
}
});
Some(module)
}
_ => None,
}
}
_ => None,
}
}
|
