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Copy pathlist.rs
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84 lines (74 loc) · 2.07 KB
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use crate::config::{SinkDescription, SourceDescription, TransformDescription};
use serde::Serialize;
use structopt::StructOpt;
#[derive(StructOpt, Debug)]
#[structopt(rename_all = "kebab-case")]
pub struct Opts {
/// Format the list in an encoding scheme.
#[structopt(long, default_value = "text", possible_values = &["text", "json", "avro"])]
format: Format,
}
#[derive(Debug, Clone, PartialEq)]
enum Format {
Text,
Json,
Avro,
}
impl std::str::FromStr for Format {
type Err = String;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"text" => Ok(Format::Text),
"json" => Ok(Format::Json),
"avro" => Ok(Format::Avro),
s => Err(format!(
"{} is not a valid option, expected `text` or `json`",
s
)),
}
}
}
#[derive(Serialize)]
pub struct EncodedList {
sources: Vec<&'static str>,
transforms: Vec<&'static str>,
sinks: Vec<&'static str>,
}
pub fn cmd(opts: &Opts) -> exitcode::ExitCode {
let sources = SourceDescription::types();
let transforms = TransformDescription::types();
let sinks = SinkDescription::types();
match opts.format {
Format::Text => {
println!("Sources:");
for name in sources {
println!("- {}", name);
}
println!("\nTransforms:");
for name in transforms {
println!("- {}", name);
}
println!("\nSinks:");
for name in sinks {
println!("- {}", name);
}
}
Format::Json => {
let list = EncodedList {
sources,
transforms,
sinks,
};
println!("{}", serde_json::to_string(&list).unwrap());
}
Format::Avro => {
let list = EncodedList {
sources,
transforms,
sinks,
};
println!("{}", serde_json::to_string(&list).unwrap());
}
}
exitcode::OK
}