// DO NOT EDIT !
// This file was generated automatically from 'src/mako/cli/main.rs.mako'
// DO NOT EDIT !
#![feature(plugin, exit_status)]
#![allow(unused_variables, unused_imports, dead_code, unused_mut)]

#[macro_use]
extern crate clap;
extern crate yup_oauth2 as oauth2;
extern crate yup_hyper_mock as mock;
extern crate serde;
extern crate hyper;
extern crate mime;
extern crate strsim;
extern crate google_container1_beta1 as api;

use std::env;
use std::io::{self, Write};
use clap::{App, SubCommand, Arg};

mod cmn;

use cmn::{InvalidOptionsError, CLIError, JsonTokenStorage, arg_from_str, writer_from_opts, parse_kv_arg, 
          input_file_from_opts, input_mime_from_opts, FieldCursor, FieldError, CallType, UploadProtocol,
          calltype_from_str, remove_json_null_values};

use std::default::Default;
use std::str::FromStr;

use oauth2::{Authenticator, DefaultAuthenticatorDelegate};
use serde::json;
use clap::ArgMatches;

enum DoitError {
    IoError(String, io::Error),
    ApiError(api::Error),
}

struct Engine<'n, 'a> {
    opt: ArgMatches<'n, 'a>,
    hub: api::Container<hyper::Client, Authenticator<DefaultAuthenticatorDelegate, JsonTokenStorage, hyper::Client>>,
    gp: Vec<&'static str>,
    gpm: Vec<(&'static str, &'static str)>,
}


impl<'n, 'a> Engine<'n, 'a> {
    fn _projects_clusters_list(&self, opt: &ArgMatches<'n, 'a>, dry_run: bool, err: &mut InvalidOptionsError)
                                                    -> Result<(), DoitError> {
        let mut call = self.hub.projects().clusters_list(opt.value_of("project-id").unwrap_or(""));
        for parg in opt.values_of("v").unwrap_or(Vec::new()).iter() {
            let (key, value) = parse_kv_arg(&*parg, err, false);
            match key {
                _ => {
                    let mut found = false;
                    for param in &self.gp {
                        if key == *param {
                            found = true;
                            call = call.param(self.gpm.iter().find(|t| t.0 == key).unwrap_or(&("", key)).1, value.unwrap_or("unset"));
                            break;
                        }
                    }
                    if !found {
                        err.issues.push(CLIError::UnknownParameter(key.to_string(),
                                                Vec::new() + &self.gp + &[]
                                                            ));
                    }
                }
            }
        }
        let protocol = CallType::Standard;
        if dry_run {
            Ok(())
        } else {
            assert!(err.issues.len() == 0);
            for scope in self.opt.values_of("url").unwrap_or(Vec::new()).iter() {
                call = call.add_scope(scope);
            }
            let mut ostream = match writer_from_opts(opt.value_of("out")) {
                Ok(mut f) => f,
                Err(io_err) => return Err(DoitError::IoError(opt.value_of("out").unwrap_or("-").to_string(), io_err)),
            };
            match match protocol {
                CallType::Standard => call.doit(),
                _ => unreachable!()
            } {
                Err(api_err) => Err(DoitError::ApiError(api_err)),
                Ok((mut response, output_schema)) => {
                    let mut value = json::value::to_value(&output_schema);
                    remove_json_null_values(&mut value);
                    serde::json::to_writer_pretty(&mut ostream, &value).unwrap();
                    Ok(())
                }
            }
        }
    }

    fn _projects_operations_list(&self, opt: &ArgMatches<'n, 'a>, dry_run: bool, err: &mut InvalidOptionsError)
                                                    -> Result<(), DoitError> {
        let mut call = self.hub.projects().operations_list(opt.value_of("project-id").unwrap_or(""));
        for parg in opt.values_of("v").unwrap_or(Vec::new()).iter() {
            let (key, value) = parse_kv_arg(&*parg, err, false);
            match key {
                _ => {
                    let mut found = false;
                    for param in &self.gp {
                        if key == *param {
                            found = true;
                            call = call.param(self.gpm.iter().find(|t| t.0 == key).unwrap_or(&("", key)).1, value.unwrap_or("unset"));
                            break;
                        }
                    }
                    if !found {
                        err.issues.push(CLIError::UnknownParameter(key.to_string(),
                                                Vec::new() + &self.gp + &[]
                                                            ));
                    }
                }
            }
        }
        let protocol = CallType::Standard;
        if dry_run {
            Ok(())
        } else {
            assert!(err.issues.len() == 0);
            for scope in self.opt.values_of("url").unwrap_or(Vec::new()).iter() {
                call = call.add_scope(scope);
            }
            let mut ostream = match writer_from_opts(opt.value_of("out")) {
                Ok(mut f) => f,
                Err(io_err) => return Err(DoitError::IoError(opt.value_of("out").unwrap_or("-").to_string(), io_err)),
            };
            match match protocol {
                CallType::Standard => call.doit(),
                _ => unreachable!()
            } {
                Err(api_err) => Err(DoitError::ApiError(api_err)),
                Ok((mut response, output_schema)) => {
                    let mut value = json::value::to_value(&output_schema);
                    remove_json_null_values(&mut value);
                    serde::json::to_writer_pretty(&mut ostream, &value).unwrap();
                    Ok(())
                }
            }
        }
    }

    fn _projects_zones_clusters_create(&self, opt: &ArgMatches<'n, 'a>, dry_run: bool, err: &mut InvalidOptionsError)
                                                    -> Result<(), DoitError> {
        
        let mut request = api::CreateClusterRequest::default();
        let mut field_cursor = FieldCursor::default();
        for kvarg in opt.values_of("kv").unwrap_or(Vec::new()).iter() {
            let last_errc = err.issues.len();
            let (key, value) = parse_kv_arg(&*kvarg, err, false);
            let mut temp_cursor = field_cursor.clone();
            if let Err(field_err) = temp_cursor.set(&*key) {
                err.issues.push(field_err);
            }
            if value.is_none() {
                field_cursor = temp_cursor.clone();
                if err.issues.len() > last_errc {
                    err.issues.remove(last_errc);
                }
                continue;
            }
            fn request_cluster_init(request: &mut api::CreateClusterRequest) {
                if request.cluster.is_none() {
                    request.cluster = Some(Default::default());
                }
            }
            
            fn request_cluster_master_auth_init(request: &mut api::CreateClusterRequest) {
                request_cluster_init(request);
                if request.cluster.as_mut().unwrap().master_auth.is_none() {
                    request.cluster.as_mut().unwrap().master_auth = Some(Default::default());
                }
            }
            
            fn request_cluster_node_config_init(request: &mut api::CreateClusterRequest) {
                request_cluster_init(request);
                if request.cluster.as_mut().unwrap().node_config.is_none() {
                    request.cluster.as_mut().unwrap().node_config = Some(Default::default());
                }
            }
            
            match &temp_cursor.to_string()[..] {
                "cluster.status" => {
                        request_cluster_init(&mut request);
                        request.cluster.as_mut().unwrap().status = Some(value.unwrap_or("").to_string());
                    },
                "cluster.container-ipv4-cidr" => {
                        request_cluster_init(&mut request);
                        request.cluster.as_mut().unwrap().container_ipv4_cidr = Some(value.unwrap_or("").to_string());
                    },
                "cluster.description" => {
                        request_cluster_init(&mut request);
                        request.cluster.as_mut().unwrap().description = Some(value.unwrap_or("").to_string());
                    },
                "cluster.zone" => {
                        request_cluster_init(&mut request);
                        request.cluster.as_mut().unwrap().zone = Some(value.unwrap_or("").to_string());
                    },
                "cluster.num-nodes" => {
                        request_cluster_init(&mut request);
                        request.cluster.as_mut().unwrap().num_nodes = Some(arg_from_str(value.unwrap_or("-0"), err, "cluster.num-nodes", "integer"));
                    },
                "cluster.node-routing-prefix-size" => {
                        request_cluster_init(&mut request);
                        request.cluster.as_mut().unwrap().node_routing_prefix_size = Some(arg_from_str(value.unwrap_or("-0"), err, "cluster.node-routing-prefix-size", "integer"));
                    },
                "cluster.master-auth.bearer-token" => {
                        request_cluster_master_auth_init(&mut request);
                        request.cluster.as_mut().unwrap().master_auth.as_mut().unwrap().bearer_token = Some(value.unwrap_or("").to_string());
                    },
                "cluster.master-auth.password" => {
                        request_cluster_master_auth_init(&mut request);
                        request.cluster.as_mut().unwrap().master_auth.as_mut().unwrap().password = Some(value.unwrap_or("").to_string());
                    },
                "cluster.master-auth.user" => {
                        request_cluster_master_auth_init(&mut request);
                        request.cluster.as_mut().unwrap().master_auth.as_mut().unwrap().user = Some(value.unwrap_or("").to_string());
                    },
                "cluster.cluster-api-version" => {
                        request_cluster_master_auth_init(&mut request);
                        request.cluster.as_mut().unwrap().cluster_api_version = Some(value.unwrap_or("").to_string());
                    },
                "cluster.network" => {
                        request_cluster_master_auth_init(&mut request);
                        request.cluster.as_mut().unwrap().network = Some(value.unwrap_or("").to_string());
                    },
                "cluster.endpoint" => {
                        request_cluster_master_auth_init(&mut request);
                        request.cluster.as_mut().unwrap().endpoint = Some(value.unwrap_or("").to_string());
                    },
                "cluster.node-config.machine-type" => {
                        request_cluster_node_config_init(&mut request);
                        request.cluster.as_mut().unwrap().node_config.as_mut().unwrap().machine_type = Some(value.unwrap_or("").to_string());
                    },
                "cluster.node-config.source-image" => {
                        request_cluster_node_config_init(&mut request);
                        request.cluster.as_mut().unwrap().node_config.as_mut().unwrap().source_image = Some(value.unwrap_or("").to_string());
                    },
                "cluster.status-message" => {
                        request_cluster_node_config_init(&mut request);
                        request.cluster.as_mut().unwrap().status_message = Some(value.unwrap_or("").to_string());
                    },
                "cluster.services-ipv4-cidr" => {
                        request_cluster_node_config_init(&mut request);
                        request.cluster.as_mut().unwrap().services_ipv4_cidr = Some(value.unwrap_or("").to_string());
                    },
                "cluster.creation-timestamp" => {
                        request_cluster_node_config_init(&mut request);
                        request.cluster.as_mut().unwrap().creation_timestamp = Some(value.unwrap_or("").to_string());
                    },
                "cluster.enable-cloud-logging" => {
                        request_cluster_node_config_init(&mut request);
                        request.cluster.as_mut().unwrap().enable_cloud_logging = Some(arg_from_str(value.unwrap_or("false"), err, "cluster.enable-cloud-logging", "boolean"));
                    },
                "cluster.self-link" => {
                        request_cluster_node_config_init(&mut request);
                        request.cluster.as_mut().unwrap().self_link = Some(value.unwrap_or("").to_string());
                    },
                "cluster.name" => {
                        request_cluster_node_config_init(&mut request);
                        request.cluster.as_mut().unwrap().name = Some(value.unwrap_or("").to_string());
                    },
                _ => {
                    let suggestion = FieldCursor::did_you_mean(key, &vec!["bearer-token", "cluster", "cluster-api-version", "container-ipv4-cidr", "creation-timestamp", "description", "enable-cloud-logging", "endpoint", "machine-type", "master-auth", "name", "network", "node-config", "node-routing-prefix-size", "num-nodes", "password", "self-link", "services-ipv4-cidr", "source-image", "status", "status-message", "user", "zone"]);
                    err.issues.push(CLIError::Field(FieldError::Unknown(temp_cursor.to_string(), suggestion, value.map(|v| v.to_string()))));
                }
            }
        }
        let mut call = self.hub.projects().zones_clusters_create(request, opt.value_of("project-id").unwrap_or(""), opt.value_of("zone-id").unwrap_or(""));
        for parg in opt.values_of("v").unwrap_or(Vec::new()).iter() {
            let (key, value) = parse_kv_arg(&*parg, err, false);
            match key {
                _ => {
                    let mut found = false;
                    for param in &self.gp {
                        if key == *param {
                            found = true;
                            call = call.param(self.gpm.iter().find(|t| t.0 == key).unwrap_or(&("", key)).1, value.unwrap_or("unset"));
                            break;
                        }
                    }
                    if !found {
                        err.issues.push(CLIError::UnknownParameter(key.to_string(),
                                                Vec::new() + &self.gp + &[]
                                                            ));
                    }
                }
            }
        }
        let protocol = CallType::Standard;
        if dry_run {
            Ok(())
        } else {
            assert!(err.issues.len() == 0);
            for scope in self.opt.values_of("url").unwrap_or(Vec::new()).iter() {
                call = call.add_scope(scope);
            }
            let mut ostream = match writer_from_opts(opt.value_of("out")) {
                Ok(mut f) => f,
                Err(io_err) => return Err(DoitError::IoError(opt.value_of("out").unwrap_or("-").to_string(), io_err)),
            };
            match match protocol {
                CallType::Standard => call.doit(),
                _ => unreachable!()
            } {
                Err(api_err) => Err(DoitError::ApiError(api_err)),
                Ok((mut response, output_schema)) => {
                    let mut value = json::value::to_value(&output_schema);
                    remove_json_null_values(&mut value);
                    serde::json::to_writer_pretty(&mut ostream, &value).unwrap();
                    Ok(())
                }
            }
        }
    }

    fn _projects_zones_clusters_delete(&self, opt: &ArgMatches<'n, 'a>, dry_run: bool, err: &mut InvalidOptionsError)
                                                    -> Result<(), DoitError> {
        let mut call = self.hub.projects().zones_clusters_delete(opt.value_of("project-id").unwrap_or(""), opt.value_of("zone-id").unwrap_or(""), opt.value_of("cluster-id").unwrap_or(""));
        for parg in opt.values_of("v").unwrap_or(Vec::new()).iter() {
            let (key, value) = parse_kv_arg(&*parg, err, false);
            match key {
                _ => {
                    let mut found = false;
                    for param in &self.gp {
                        if key == *param {
                            found = true;
                            call = call.param(self.gpm.iter().find(|t| t.0 == key).unwrap_or(&("", key)).1, value.unwrap_or("unset"));
                            break;
                        }
                    }
                    if !found {
                        err.issues.push(CLIError::UnknownParameter(key.to_string(),
                                                Vec::new() + &self.gp + &[]
                                                            ));
                    }
                }
            }
        }
        let protocol = CallType::Standard;
        if dry_run {
            Ok(())
        } else {
            assert!(err.issues.len() == 0);
            for scope in self.opt.values_of("url").unwrap_or(Vec::new()).iter() {
                call = call.add_scope(scope);
            }
            let mut ostream = match writer_from_opts(opt.value_of("out")) {
                Ok(mut f) => f,
                Err(io_err) => return Err(DoitError::IoError(opt.value_of("out").unwrap_or("-").to_string(), io_err)),
            };
            match match protocol {
                CallType::Standard => call.doit(),
                _ => unreachable!()
            } {
                Err(api_err) => Err(DoitError::ApiError(api_err)),
                Ok((mut response, output_schema)) => {
                    let mut value = json::value::to_value(&output_schema);
                    remove_json_null_values(&mut value);
                    serde::json::to_writer_pretty(&mut ostream, &value).unwrap();
                    Ok(())
                }
            }
        }
    }

    fn _projects_zones_clusters_get(&self, opt: &ArgMatches<'n, 'a>, dry_run: bool, err: &mut InvalidOptionsError)
                                                    -> Result<(), DoitError> {
        let mut call = self.hub.projects().zones_clusters_get(opt.value_of("project-id").unwrap_or(""), opt.value_of("zone-id").unwrap_or(""), opt.value_of("cluster-id").unwrap_or(""));
        for parg in opt.values_of("v").unwrap_or(Vec::new()).iter() {
            let (key, value) = parse_kv_arg(&*parg, err, false);
            match key {
                _ => {
                    let mut found = false;
                    for param in &self.gp {
                        if key == *param {
                            found = true;
                            call = call.param(self.gpm.iter().find(|t| t.0 == key).unwrap_or(&("", key)).1, value.unwrap_or("unset"));
                            break;
                        }
                    }
                    if !found {
                        err.issues.push(CLIError::UnknownParameter(key.to_string(),
                                                Vec::new() + &self.gp + &[]
                                                            ));
                    }
                }
            }
        }
        let protocol = CallType::Standard;
        if dry_run {
            Ok(())
        } else {
            assert!(err.issues.len() == 0);
            for scope in self.opt.values_of("url").unwrap_or(Vec::new()).iter() {
                call = call.add_scope(scope);
            }
            let mut ostream = match writer_from_opts(opt.value_of("out")) {
                Ok(mut f) => f,
                Err(io_err) => return Err(DoitError::IoError(opt.value_of("out").unwrap_or("-").to_string(), io_err)),
            };
            match match protocol {
                CallType::Standard => call.doit(),
                _ => unreachable!()
            } {
                Err(api_err) => Err(DoitError::ApiError(api_err)),
                Ok((mut response, output_schema)) => {
                    let mut value = json::value::to_value(&output_schema);
                    remove_json_null_values(&mut value);
                    serde::json::to_writer_pretty(&mut ostream, &value).unwrap();
                    Ok(())
                }
            }
        }
    }

    fn _projects_zones_clusters_list(&self, opt: &ArgMatches<'n, 'a>, dry_run: bool, err: &mut InvalidOptionsError)
                                                    -> Result<(), DoitError> {
        let mut call = self.hub.projects().zones_clusters_list(opt.value_of("project-id").unwrap_or(""), opt.value_of("zone-id").unwrap_or(""));
        for parg in opt.values_of("v").unwrap_or(Vec::new()).iter() {
            let (key, value) = parse_kv_arg(&*parg, err, false);
            match key {
                _ => {
                    let mut found = false;
                    for param in &self.gp {
                        if key == *param {
                            found = true;
                            call = call.param(self.gpm.iter().find(|t| t.0 == key).unwrap_or(&("", key)).1, value.unwrap_or("unset"));
                            break;
                        }
                    }
                    if !found {
                        err.issues.push(CLIError::UnknownParameter(key.to_string(),
                                                Vec::new() + &self.gp + &[]
                                                            ));
                    }
                }
            }
        }
        let protocol = CallType::Standard;
        if dry_run {
            Ok(())
        } else {
            assert!(err.issues.len() == 0);
            for scope in self.opt.values_of("url").unwrap_or(Vec::new()).iter() {
                call = call.add_scope(scope);
            }
            let mut ostream = match writer_from_opts(opt.value_of("out")) {
                Ok(mut f) => f,
                Err(io_err) => return Err(DoitError::IoError(opt.value_of("out").unwrap_or("-").to_string(), io_err)),
            };
            match match protocol {
                CallType::Standard => call.doit(),
                _ => unreachable!()
            } {
                Err(api_err) => Err(DoitError::ApiError(api_err)),
                Ok((mut response, output_schema)) => {
                    let mut value = json::value::to_value(&output_schema);
                    remove_json_null_values(&mut value);
                    serde::json::to_writer_pretty(&mut ostream, &value).unwrap();
                    Ok(())
                }
            }
        }
    }

    fn _projects_zones_operations_get(&self, opt: &ArgMatches<'n, 'a>, dry_run: bool, err: &mut InvalidOptionsError)
                                                    -> Result<(), DoitError> {
        let mut call = self.hub.projects().zones_operations_get(opt.value_of("project-id").unwrap_or(""), opt.value_of("zone-id").unwrap_or(""), opt.value_of("operation-id").unwrap_or(""));
        for parg in opt.values_of("v").unwrap_or(Vec::new()).iter() {
            let (key, value) = parse_kv_arg(&*parg, err, false);
            match key {
                _ => {
                    let mut found = false;
                    for param in &self.gp {
                        if key == *param {
                            found = true;
                            call = call.param(self.gpm.iter().find(|t| t.0 == key).unwrap_or(&("", key)).1, value.unwrap_or("unset"));
                            break;
                        }
                    }
                    if !found {
                        err.issues.push(CLIError::UnknownParameter(key.to_string(),
                                                Vec::new() + &self.gp + &[]
                                                            ));
                    }
                }
            }
        }
        let protocol = CallType::Standard;
        if dry_run {
            Ok(())
        } else {
            assert!(err.issues.len() == 0);
            for scope in self.opt.values_of("url").unwrap_or(Vec::new()).iter() {
                call = call.add_scope(scope);
            }
            let mut ostream = match writer_from_opts(opt.value_of("out")) {
                Ok(mut f) => f,
                Err(io_err) => return Err(DoitError::IoError(opt.value_of("out").unwrap_or("-").to_string(), io_err)),
            };
            match match protocol {
                CallType::Standard => call.doit(),
                _ => unreachable!()
            } {
                Err(api_err) => Err(DoitError::ApiError(api_err)),
                Ok((mut response, output_schema)) => {
                    let mut value = json::value::to_value(&output_schema);
                    remove_json_null_values(&mut value);
                    serde::json::to_writer_pretty(&mut ostream, &value).unwrap();
                    Ok(())
                }
            }
        }
    }

    fn _projects_zones_operations_list(&self, opt: &ArgMatches<'n, 'a>, dry_run: bool, err: &mut InvalidOptionsError)
                                                    -> Result<(), DoitError> {
        let mut call = self.hub.projects().zones_operations_list(opt.value_of("project-id").unwrap_or(""), opt.value_of("zone-id").unwrap_or(""));
        for parg in opt.values_of("v").unwrap_or(Vec::new()).iter() {
            let (key, value) = parse_kv_arg(&*parg, err, false);
            match key {
                _ => {
                    let mut found = false;
                    for param in &self.gp {
                        if key == *param {
                            found = true;
                            call = call.param(self.gpm.iter().find(|t| t.0 == key).unwrap_or(&("", key)).1, value.unwrap_or("unset"));
                            break;
                        }
                    }
                    if !found {
                        err.issues.push(CLIError::UnknownParameter(key.to_string(),
                                                Vec::new() + &self.gp + &[]
                                                            ));
                    }
                }
            }
        }
        let protocol = CallType::Standard;
        if dry_run {
            Ok(())
        } else {
            assert!(err.issues.len() == 0);
            for scope in self.opt.values_of("url").unwrap_or(Vec::new()).iter() {
                call = call.add_scope(scope);
            }
            let mut ostream = match writer_from_opts(opt.value_of("out")) {
                Ok(mut f) => f,
                Err(io_err) => return Err(DoitError::IoError(opt.value_of("out").unwrap_or("-").to_string(), io_err)),
            };
            match match protocol {
                CallType::Standard => call.doit(),
                _ => unreachable!()
            } {
                Err(api_err) => Err(DoitError::ApiError(api_err)),
                Ok((mut response, output_schema)) => {
                    let mut value = json::value::to_value(&output_schema);
                    remove_json_null_values(&mut value);
                    serde::json::to_writer_pretty(&mut ostream, &value).unwrap();
                    Ok(())
                }
            }
        }
    }

    fn _projects_zones_tokens_get(&self, opt: &ArgMatches<'n, 'a>, dry_run: bool, err: &mut InvalidOptionsError)
                                                    -> Result<(), DoitError> {
        let mut call = self.hub.projects().zones_tokens_get(opt.value_of("master-project-id").unwrap_or(""), opt.value_of("zone-id").unwrap_or(""), opt.value_of("project-number").unwrap_or(""), opt.value_of("cluster-name").unwrap_or(""));
        for parg in opt.values_of("v").unwrap_or(Vec::new()).iter() {
            let (key, value) = parse_kv_arg(&*parg, err, false);
            match key {
                _ => {
                    let mut found = false;
                    for param in &self.gp {
                        if key == *param {
                            found = true;
                            call = call.param(self.gpm.iter().find(|t| t.0 == key).unwrap_or(&("", key)).1, value.unwrap_or("unset"));
                            break;
                        }
                    }
                    if !found {
                        err.issues.push(CLIError::UnknownParameter(key.to_string(),
                                                Vec::new() + &self.gp + &[]
                                                            ));
                    }
                }
            }
        }
        let protocol = CallType::Standard;
        if dry_run {
            Ok(())
        } else {
            assert!(err.issues.len() == 0);
            let mut ostream = match writer_from_opts(opt.value_of("out")) {
                Ok(mut f) => f,
                Err(io_err) => return Err(DoitError::IoError(opt.value_of("out").unwrap_or("-").to_string(), io_err)),
            };
            match match protocol {
                CallType::Standard => call.doit(),
                _ => unreachable!()
            } {
                Err(api_err) => Err(DoitError::ApiError(api_err)),
                Ok((mut response, output_schema)) => {
                    let mut value = json::value::to_value(&output_schema);
                    remove_json_null_values(&mut value);
                    serde::json::to_writer_pretty(&mut ostream, &value).unwrap();
                    Ok(())
                }
            }
        }
    }

    fn _doit(&self, dry_run: bool) -> Result<Result<(), DoitError>, Option<InvalidOptionsError>> {
        let mut err = InvalidOptionsError::new();
        let mut call_result: Result<(), DoitError> = Ok(());
        let mut err_opt: Option<InvalidOptionsError> = None;
        match self.opt.subcommand() {
            ("projects", Some(opt)) => {
                match opt.subcommand() {
                    ("clusters-list", Some(opt)) => {
                        call_result = self._projects_clusters_list(opt, dry_run, &mut err);
                    },
                    ("operations-list", Some(opt)) => {
                        call_result = self._projects_operations_list(opt, dry_run, &mut err);
                    },
                    ("zones-clusters-create", Some(opt)) => {
                        call_result = self._projects_zones_clusters_create(opt, dry_run, &mut err);
                    },
                    ("zones-clusters-delete", Some(opt)) => {
                        call_result = self._projects_zones_clusters_delete(opt, dry_run, &mut err);
                    },
                    ("zones-clusters-get", Some(opt)) => {
                        call_result = self._projects_zones_clusters_get(opt, dry_run, &mut err);
                    },
                    ("zones-clusters-list", Some(opt)) => {
                        call_result = self._projects_zones_clusters_list(opt, dry_run, &mut err);
                    },
                    ("zones-operations-get", Some(opt)) => {
                        call_result = self._projects_zones_operations_get(opt, dry_run, &mut err);
                    },
                    ("zones-operations-list", Some(opt)) => {
                        call_result = self._projects_zones_operations_list(opt, dry_run, &mut err);
                    },
                    ("zones-tokens-get", Some(opt)) => {
                        call_result = self._projects_zones_tokens_get(opt, dry_run, &mut err);
                    },
                    _ => {
                        err.issues.push(CLIError::MissingMethodError("projects".to_string()));
                        writeln!(io::stderr(), "{}\n", opt.usage()).ok();
                    }
                }
            },
            _ => {
                err.issues.push(CLIError::MissingCommandError);
                writeln!(io::stderr(), "{}\n", self.opt.usage()).ok();
            }
        }

        if dry_run {
            if err.issues.len() > 0 {
                err_opt = Some(err);
            }
            Err(err_opt)
        } else {
            Ok(call_result)
        }
    }

    // Please note that this call will fail if any part of the opt can't be handled
    fn new(opt: ArgMatches<'a, 'n>) -> Result<Engine<'a, 'n>, InvalidOptionsError> {
        let (config_dir, secret) = {
            let config_dir = match cmn::assure_config_dir_exists(opt.value_of("folder").unwrap_or("~/.google-service-cli")) {
                Err(e) => return Err(InvalidOptionsError::single(e, 3)),
                Ok(p) => p,
            };

            match cmn::application_secret_from_directory(&config_dir, "container1-beta1-secret.json", 
                                                         "{\"installed\":{\"auth_uri\":\"https://accounts.google.com/o/oauth2/auth\",\"client_secret\":\"hCsslbCUyfehWMmbkG8vTYxG\",\"token_uri\":\"https://accounts.google.com/o/oauth2/token\",\"client_email\":\"\",\"redirect_uris\":[\"urn:ietf:wg:oauth:2.0:oob\",\"oob\"],\"client_x509_cert_url\":\"\",\"client_id\":\"620010449518-9ngf7o4dhs0dka470npqvor6dc5lqb9b.apps.googleusercontent.com\",\"auth_provider_x509_cert_url\":\"https://www.googleapis.com/oauth2/v1/certs\"}}") {
                Ok(secret) => (config_dir, secret),
                Err(e) => return Err(InvalidOptionsError::single(e, 4))
            }
        };

        let auth = Authenticator::new(  &secret, DefaultAuthenticatorDelegate,
                                        if opt.is_present("debug-auth") {
                                            hyper::Client::with_connector(mock::TeeConnector {
                                                    connector: hyper::net::HttpConnector(None) 
                                                })
                                        } else {
                                            hyper::Client::new()
                                        },
                                        JsonTokenStorage {
                                          program_name: "container1-beta1",
                                          db_dir: config_dir.clone(),
                                        }, None);

        let client = 
            if opt.is_present("debug") {
                hyper::Client::with_connector(mock::TeeConnector {
                        connector: hyper::net::HttpConnector(None) 
                    })
            } else {
                hyper::Client::new()
            };
        let engine = Engine {
            opt: opt,
            hub: api::Container::new(client, auth),
            gp: vec!["alt", "fields", "key", "oauth-token", "pretty-print", "quota-user", "user-ip"],
            gpm: vec![
                    ("oauth-token", "oauth_token"),
                    ("pretty-print", "prettyPrint"),
                    ("quota-user", "quotaUser"),
                    ("user-ip", "userIp"),
                ]
        };

        match engine._doit(true) {
            Err(Some(err)) => Err(err),
            Err(None)      => Ok(engine),
            Ok(_)          => unreachable!(),
        }
    }

    fn doit(&self) -> Result<(), DoitError> {
        match self._doit(false) {
            Ok(res) => res,
            Err(_) => unreachable!(),
        }
    }
}

fn main() {
    let arg_data = [
        ("projects", "methods: 'clusters-list', 'operations-list', 'zones-clusters-create', 'zones-clusters-delete', 'zones-clusters-get', 'zones-clusters-list', 'zones-operations-get', 'zones-operations-list' and 'zones-tokens-get'", vec![
            ("clusters-list",  
                    Some(r##"Lists all clusters owned by a project across all zones."##),
                    "Details at http://byron.github.io/google-apis-rs/google_container1_beta1_cli/projects_clusters-list",
                  vec![
                    (Some(r##"project-id"##),
                     None,
                     Some(r##"The Google Developers Console project ID or  project number."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"v"##),
                     Some(r##"p"##),
                     Some(r##"Set various optional parameters, matching the key=value form"##),
                     Some(false),
                     Some(true)),
        
                    (Some(r##"out"##),
                     Some(r##"o"##),
                     Some(r##"Specify the file into which to write the program's output"##),
                     Some(false),
                     Some(false)),
                  ]),
            ("operations-list",  
                    Some(r##"Lists all operations in a project, across all zones."##),
                    "Details at http://byron.github.io/google-apis-rs/google_container1_beta1_cli/projects_operations-list",
                  vec![
                    (Some(r##"project-id"##),
                     None,
                     Some(r##"The Google Developers Console project ID or  project number."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"v"##),
                     Some(r##"p"##),
                     Some(r##"Set various optional parameters, matching the key=value form"##),
                     Some(false),
                     Some(true)),
        
                    (Some(r##"out"##),
                     Some(r##"o"##),
                     Some(r##"Specify the file into which to write the program's output"##),
                     Some(false),
                     Some(false)),
                  ]),
            ("zones-clusters-create",  
                    Some(r##"Creates a cluster, consisting of the specified number and type of Google Compute Engine instances, plus a Kubernetes master instance.
        
        The cluster is created in the project's default network.
        
        A firewall is added that allows traffic into port 443 on the master, which enables HTTPS. A firewall and a route is added for each node to allow the containers on that node to communicate with all other instances in the cluster.
        
        Finally, a route named k8s-iproute-10-xx-0-0 is created to track that the cluster's 10.xx.0.0/16 CIDR has been assigned."##),
                    "Details at http://byron.github.io/google-apis-rs/google_container1_beta1_cli/projects_zones-clusters-create",
                  vec![
                    (Some(r##"project-id"##),
                     None,
                     Some(r##"The Google Developers Console project ID or  project number."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"zone-id"##),
                     None,
                     Some(r##"The name of the Google Compute Engine zone in which the cluster resides."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"kv"##),
                     Some(r##"r"##),
                     Some(r##"Set various fields of the request structure, matching the key=value form"##),
                     Some(true),
                     Some(true)),
        
                    (Some(r##"v"##),
                     Some(r##"p"##),
                     Some(r##"Set various optional parameters, matching the key=value form"##),
                     Some(false),
                     Some(true)),
        
                    (Some(r##"out"##),
                     Some(r##"o"##),
                     Some(r##"Specify the file into which to write the program's output"##),
                     Some(false),
                     Some(false)),
                  ]),
            ("zones-clusters-delete",  
                    Some(r##"Deletes the cluster, including the Kubernetes master and all worker nodes.
        
        Firewalls and routes that were configured at cluster creation are also deleted."##),
                    "Details at http://byron.github.io/google-apis-rs/google_container1_beta1_cli/projects_zones-clusters-delete",
                  vec![
                    (Some(r##"project-id"##),
                     None,
                     Some(r##"The Google Developers Console project ID or  project number."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"zone-id"##),
                     None,
                     Some(r##"The name of the Google Compute Engine zone in which the cluster resides."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"cluster-id"##),
                     None,
                     Some(r##"The name of the cluster to delete."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"v"##),
                     Some(r##"p"##),
                     Some(r##"Set various optional parameters, matching the key=value form"##),
                     Some(false),
                     Some(true)),
        
                    (Some(r##"out"##),
                     Some(r##"o"##),
                     Some(r##"Specify the file into which to write the program's output"##),
                     Some(false),
                     Some(false)),
                  ]),
            ("zones-clusters-get",  
                    Some(r##"Gets a specific cluster."##),
                    "Details at http://byron.github.io/google-apis-rs/google_container1_beta1_cli/projects_zones-clusters-get",
                  vec![
                    (Some(r##"project-id"##),
                     None,
                     Some(r##"The Google Developers Console project ID or  project number."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"zone-id"##),
                     None,
                     Some(r##"The name of the Google Compute Engine zone in which the cluster resides."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"cluster-id"##),
                     None,
                     Some(r##"The name of the cluster to retrieve."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"v"##),
                     Some(r##"p"##),
                     Some(r##"Set various optional parameters, matching the key=value form"##),
                     Some(false),
                     Some(true)),
        
                    (Some(r##"out"##),
                     Some(r##"o"##),
                     Some(r##"Specify the file into which to write the program's output"##),
                     Some(false),
                     Some(false)),
                  ]),
            ("zones-clusters-list",  
                    Some(r##"Lists all clusters owned by a project in the specified zone."##),
                    "Details at http://byron.github.io/google-apis-rs/google_container1_beta1_cli/projects_zones-clusters-list",
                  vec![
                    (Some(r##"project-id"##),
                     None,
                     Some(r##"The Google Developers Console project ID or  project number."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"zone-id"##),
                     None,
                     Some(r##"The name of the Google Compute Engine zone in which the cluster resides."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"v"##),
                     Some(r##"p"##),
                     Some(r##"Set various optional parameters, matching the key=value form"##),
                     Some(false),
                     Some(true)),
        
                    (Some(r##"out"##),
                     Some(r##"o"##),
                     Some(r##"Specify the file into which to write the program's output"##),
                     Some(false),
                     Some(false)),
                  ]),
            ("zones-operations-get",  
                    Some(r##"Gets the specified operation."##),
                    "Details at http://byron.github.io/google-apis-rs/google_container1_beta1_cli/projects_zones-operations-get",
                  vec![
                    (Some(r##"project-id"##),
                     None,
                     Some(r##"The Google Developers Console project ID or  project number."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"zone-id"##),
                     None,
                     Some(r##"The name of the Google Compute Engine zone in which the operation resides. This is always the same zone as the cluster with which the operation is associated."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"operation-id"##),
                     None,
                     Some(r##"The server-assigned name of the operation."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"v"##),
                     Some(r##"p"##),
                     Some(r##"Set various optional parameters, matching the key=value form"##),
                     Some(false),
                     Some(true)),
        
                    (Some(r##"out"##),
                     Some(r##"o"##),
                     Some(r##"Specify the file into which to write the program's output"##),
                     Some(false),
                     Some(false)),
                  ]),
            ("zones-operations-list",  
                    Some(r##"Lists all operations in a project in a specific zone."##),
                    "Details at http://byron.github.io/google-apis-rs/google_container1_beta1_cli/projects_zones-operations-list",
                  vec![
                    (Some(r##"project-id"##),
                     None,
                     Some(r##"The Google Developers Console project ID or  project number."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"zone-id"##),
                     None,
                     Some(r##"The name of the Google Compute Engine zone to return operations for."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"v"##),
                     Some(r##"p"##),
                     Some(r##"Set various optional parameters, matching the key=value form"##),
                     Some(false),
                     Some(true)),
        
                    (Some(r##"out"##),
                     Some(r##"o"##),
                     Some(r##"Specify the file into which to write the program's output"##),
                     Some(false),
                     Some(false)),
                  ]),
            ("zones-tokens-get",  
                    Some(r##"Gets a compute-rw scoped OAuth2 access token for
        . Authentication is performed to ensure that the caller is a member of  and that the request is coming from the expected master VM for the specified cluster. See go/gke-cross-project-auth for more details."##),
                    "Details at http://byron.github.io/google-apis-rs/google_container1_beta1_cli/projects_zones-tokens-get",
                  vec![
                    (Some(r##"master-project-id"##),
                     None,
                     Some(r##"The hosted master project from which this request is coming."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"zone-id"##),
                     None,
                     Some(r##"The zone of the specified cluster."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"project-number"##),
                     None,
                     Some(r##"The project number for which the access token is being requested."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"cluster-name"##),
                     None,
                     Some(r##"The name of the specified cluster."##),
                     Some(true),
                     Some(false)),
        
                    (Some(r##"v"##),
                     Some(r##"p"##),
                     Some(r##"Set various optional parameters, matching the key=value form"##),
                     Some(false),
                     Some(true)),
        
                    (Some(r##"out"##),
                     Some(r##"o"##),
                     Some(r##"Specify the file into which to write the program's output"##),
                     Some(false),
                     Some(false)),
                  ]),
            ]),
        
    ];
    
    let mut app = App::new("container1-beta1")
           .author("Sebastian Thiel <byronimo@gmail.com>")
           .version("0.2.0+20150420")
           .about("The Google Container Engine API is used for building and managing container based applications, powered by the open source Kubernetes technology.")
           .after_help("All documentation details can be found at http://byron.github.io/google-apis-rs/google_container1_beta1_cli")
           .arg(Arg::with_name("url")
                   .long("scope")
                   .help("Specify the authentication a method should be executed in. Each scope requires the user to grant this application permission to use it.If unset, it defaults to the shortest scope url for a particular method.")
                   .multiple(true)
                   .takes_value(true))
           .arg(Arg::with_name("folder")
                   .long("config-dir")
                   .help("A directory into which we will store our persistent data. Defaults to a user-writable directory that we will create during the first invocation.[default: ~/.google-service-cli")
                   .multiple(false)
                   .takes_value(true))
           .arg(Arg::with_name("debug")
                   .long("debug")
                   .help("Output all server communication to standard error. `tx` and `rx` are placed into the same stream.")
                   .multiple(false)
                   .takes_value(false))
           .arg(Arg::with_name("debug-auth")
                   .long("debug-auth")
                   .help("Output all communication related to authentication to standard error. `tx` and `rx` are placed into the same stream.")
                   .multiple(false)
                   .takes_value(false));
           
           for &(main_command_name, ref about, ref subcommands) in arg_data.iter() {
               let mut mcmd = SubCommand::new(main_command_name).about(about);
           
               for &(sub_command_name, ref desc, url_info, ref args) in subcommands {
                   let mut scmd = SubCommand::new(sub_command_name);
                   if let &Some(desc) = desc {
                       scmd = scmd.about(desc);
                   }
                   scmd = scmd.after_help(url_info);
           
                   for &(ref arg_name, ref flag, ref desc, ref required, ref multi) in args {
                       let arg_name_str = 
                           match (arg_name, flag) {
                                   (&Some(an), _       ) => an,
                                   (_        , &Some(f)) => f,
                                    _                    => unreachable!(),
                            };
                       let mut arg = Arg::with_name(arg_name_str);
                       if let &Some(short_flag) = flag {
                           arg = arg.short(short_flag);
                       }
                       if let &Some(desc) = desc {
                           arg = arg.help(desc);
                       }
                       if arg_name.is_some() && flag.is_some() {
                           arg = arg.takes_value(true);
                       }
                       if let &Some(required) = required {
                           arg = arg.required(required);
                       }
                       if let &Some(multi) = multi {
                           arg = arg.multiple(multi);
                       }
                       scmd = scmd.arg(arg);
                   }
                   mcmd = mcmd.subcommand(scmd);
               }
               app = app.subcommand(mcmd);
           }
           
        let matches = app.get_matches();

    let debug = matches.is_present("debug");
    match Engine::new(matches) {
        Err(err) => {
            env::set_exit_status(err.exit_code);
            writeln!(io::stderr(), "{}", err).ok();
        },
        Ok(engine) => {
            if let Err(doit_err) = engine.doit() {
                env::set_exit_status(1);
                match doit_err {
                    DoitError::IoError(path, err) => {
                        writeln!(io::stderr(), "Failed to open output file '{}': {}", path, err).ok();
                    },
                    DoitError::ApiError(err) => {
                        if debug {
                            writeln!(io::stderr(), "{:?}", err).ok();
                        } else {
                            writeln!(io::stderr(), "{}", err).ok();
                        }
                    }
                }
            }
        }
    }
}