bin/pbs-datastore.rs: start implementing cli commands

src/bin/pbs-datastore.rs

@@ -0,0 +1,81 @@
+extern crate apitest;
+
+use failure::*;
+use std::collections::HashMap;
+
+//use std::sync::Arc;
+
+use apitest::api::schema::*;
+use apitest::api::router::*;
+use apitest::api::config::*;
+use apitest::getopts;
+
+use apitest::api3;
+
+fn print_cli_usage() {
+
+    eprintln!("Usage: TODO");
+}
+
+type CliCommandDefinition = HashMap<String, CliCommand>;
+
+fn run_cli_command(def: &CliCommandDefinition) -> Result<(), Error> {
+
+    let mut args: Vec<String> = std::env::args().skip(1).collect();
+
+    if args.len() < 1 {
+        bail!("no command specified.");
+    }
+
+    let command = args.remove(0);
+
+    let cli_cmd = match def.get(&command) {
+        Some(cmd) => cmd,
+        None => {
+            bail!("no such command '{}'", command);
+        }
+    };
+
+    let (params, rest) = getopts::parse_arguments(
+        &args, &cli_cmd.arg_param, &cli_cmd.info.parameters)?;
+
+    if !rest.is_empty() {
+        bail!("got additional arguments: {:?}", rest);
+    }
+
+    let res = (cli_cmd.info.handler)(params,  &cli_cmd.info)?;
+
+    println!("Result: {}", serde_json::to_string_pretty(&res).unwrap());
+
+    Ok(())
+}
+
+struct CliCommand {
+    info: ApiMethod,
+    arg_param: Vec<&'static str>,
+    fixed_param: Vec<&'static str>,
+}
+
+fn main() {
+
+    let mut cmd_def = HashMap::new();
+
+    cmd_def.insert("list".to_owned(), CliCommand {
+        info: api3::config::datastore::get(),
+        arg_param: vec![],
+        fixed_param: vec![],
+    });
+
+    cmd_def.insert("create".to_owned(), CliCommand {
+        info: api3::config::datastore::post(),
+        arg_param: vec!["name", "path"],
+        fixed_param: vec![],
+    });
+
+    if let Err(err) = run_cli_command(&cmd_def) {
+        eprintln!("Error: {}", err);
+        print_cli_usage();
+        std::process::exit(-1);
+    }
+
+}