Add initial parsec-tool implementation

Signed-off-by: Joe Ellis <[email protected]>

Author: Joe Ellis

Cargo.lock

@@ -12,3 +12,19 @@ edition = "2018"
 documentation = "https://docs.rs/crate/parsec-tool"
 
 [dependencies]
+ansi_term = "0.12"
+anyhow = "1.0.31"
+atty = "0.2"
+clap = "3.0.0-beta.1"
+parsec-client = "0.7.1"
+parsec-interface = "0.19.0"
+secrecy = { version = "0.6.0", features = ["serde"] }
+structopt = "0.3.15"
+thiserror = "1.0"
+
+[lib]
+name = "parsec_tool"
+path = "src/lib.rs"
+
+[[bin]]
+name = "parsec-tool"

Cargo.toml

@@ -17,6 +17,7 @@
       "ionut-arm",
       "justincormack",
       "paulhowardarm",
+      "joechrisellis",
     ]
 
 [people]
@@ -43,3 +44,7 @@
     Email = "[email protected]"
     GitHub = "paulhowardarm"
 
+    [people.joechrisellis]
+    Name = "Joe Ellis"
+    Email = "[email protected]"
+    GitHub = "joechrisellis"

MAINTAINERS.toml

@@ -12,7 +12,13 @@ service](https://github.com/parallaxsecond/parsec) on the command-line.
 The software is provided under Apache-2.0. Contributions to this project are accepted under the same license.
 
 This project uses the following third party crates:
-* 
+* ansi\_term (MIT)
+* anyhow (MIT or Apache-2.0)
+* atty (MIT)
+* clap (MIT)
+* secrecy (MIT or Apache-2.0)
+* structopt (MIT or Apache-2.0)
+* thiserror (MIT or Apache-2.0)
 
 ## Contributing
 

README.md

@@ -0,0 +1,49 @@
+// Copyright 2020 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+
+//! Base CLI implementation.
+
+use crate::common::{PROJECT_AUTHOR, PROJECT_DESC, PROJECT_NAME, PROJECT_VERSION};
+use crate::error::ParsecToolError;
+use crate::subcommands::{ParsecToolSubcommand, Subcommand};
+use parsec_client::auth::AuthenticationData;
+use structopt::StructOpt;
+
+/// Struct representing the command-line interface of parsec-tool.
+#[derive(Debug, StructOpt)]
+#[structopt(name=PROJECT_NAME, about=PROJECT_DESC, author=PROJECT_AUTHOR, version=PROJECT_VERSION)]
+pub struct ParsecToolApp {
+    /// How verbose should we be?
+    #[structopt(short = "v", multiple = true, default_value = "0")]
+    pub verbosity: u8,
+
+    /// Sets the authentication secret -- will default to no authentication if unspecified.
+    #[structopt(short = "a", long = "auth-secret")]
+    pub auth_secret: Option<String>,
+
+    /// The subcommand -- e.g., ping.
+    #[structopt(subcommand)]
+    pub subcommand: Subcommand,
+}
+
+impl ParsecToolApp {
+    /// Run the requested subcommand.
+    pub fn dispatch_subcommand(&self) -> Result<(), ParsecToolError> {
+        match &self.subcommand {
+            Subcommand::Ping(cmd) => cmd.run(self),
+            Subcommand::ListProviders(cmd) => cmd.run(self),
+            Subcommand::ListOpcodes(cmd) => cmd.run(self),
+        }
+    }
+
+    /// Given an optional string, generate the corresponding AuthenticationData instance. This is
+    /// effectively a `FromStr` implementation for AuthenticationData. Passing in `None` will return
+    /// AuthenticationData::None. Passing in `Some(s)` will give you an app identity whose secret is
+    /// built from the string `s`.
+    pub fn authentication_data(&self) -> AuthenticationData {
+        match &self.auth_secret {
+            None => AuthenticationData::None,
+            Some(s) => AuthenticationData::AppIdentity(secrecy::Secret::new(s.into())),
+        }
+    }
+}

src/cli/mod.rs

@@ -0,0 +1,16 @@
+// Copyright 2020 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+
+//! Common variables.
+
+/// The project name from Cargo.
+pub const PROJECT_NAME: &str = env!("CARGO_PKG_NAME");
+
+/// The project description from Cargo.
+pub const PROJECT_DESC: &str = env!("CARGO_PKG_DESCRIPTION");
+
+/// The project author from Cargo.
+pub const PROJECT_AUTHOR: &str = env!("CARGO_PKG_AUTHORS");
+
+/// The project version from Cargo.
+pub const PROJECT_VERSION: &str = env!("CARGO_PKG_VERSION");

src/common.rs

@@ -0,0 +1,24 @@
+// Copyright 2020 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+
+//! Error definitions/handling.
+
+use parsec_interface::operations::NativeResult;
+use thiserror::Error;
+
+/// Errors in parsec-tool.
+#[derive(Error, Debug)]
+pub enum ParsecToolError {
+    /// Error emanating from the parsec_client crate.
+    #[error(transparent)]
+    ParsecClientError(#[from] parsec_client::error::Error),
+
+    /// Error emanating from the parsec_interface crate.
+    #[error(transparent)]
+    ParsecInterfaceError(#[from] parsec_interface::requests::ResponseStatus),
+
+    /// Unexpected native result error, for when we expected a particular type of result but get
+    /// something else.
+    #[error("Got an unexpected native result: {0:?}")]
+    UnexpectedNativeResult(NativeResult),
+}

src/error.rs

@@ -0,0 +1,43 @@
+// Copyright 2020 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+
+//! Source code for the `parsec-tool` project. This is a command-line interface for interacting
+//! with the Parsec service.
+
+#![deny(
+    nonstandard_style,
+    const_err,
+    dead_code,
+    improper_ctypes,
+    non_shorthand_field_patterns,
+    no_mangle_generic_items,
+    overflowing_literals,
+    path_statements,
+    patterns_in_fns_without_body,
+    private_in_public,
+    unconditional_recursion,
+    unused,
+    unused_allocation,
+    unused_comparisons,
+    unused_parens,
+    while_true,
+    missing_debug_implementations,
+    missing_docs,
+    trivial_casts,
+    trivial_numeric_casts,
+    unused_extern_crates,
+    unused_import_braces,
+    unused_qualifications,
+    unused_results,
+    missing_copy_implementations
+)]
+// This one is hard to avoid.
+#![allow(clippy::multiple_crate_versions)]
+
+#[macro_use]
+pub mod util;
+
+pub mod cli;
+pub mod common;
+pub mod error;
+pub mod subcommands;

src/lib.rs

@@ -1,38 +1,26 @@
 // Copyright 2020 Contributors to the Parsec project.
 // SPDX-License-Identifier: Apache-2.0
 
-#![deny(
-    nonstandard_style,
-    const_err,
-    dead_code,
-    improper_ctypes,
-    non_shorthand_field_patterns,
-    no_mangle_generic_items,
-    overflowing_literals,
-    path_statements,
-    patterns_in_fns_without_body,
-    private_in_public,
-    unconditional_recursion,
-    unused,
-    unused_allocation,
-    unused_comparisons,
-    unused_parens,
-    while_true,
-    missing_debug_implementations,
-    missing_docs,
-    trivial_casts,
-    trivial_numeric_casts,
-    unused_extern_crates,
-    unused_import_braces,
-    unused_qualifications,
-    unused_results,
-    missing_copy_implementations
-)]
-// This one is hard to avoid.
-#![allow(clippy::multiple_crate_versions)]
+//! parsec-tool: a tool for interfacing with the Parsec service from the command-line.
 
-//! Parsec Tool: a tool to communicate with Parsec from the command-line
+use parsec_tool::err;
+
+use anyhow::Context;
+use anyhow::Result;
+use parsec_tool::cli;
+use structopt::StructOpt;
+
+fn run() -> Result<()> {
+    let matches = cli::ParsecToolApp::from_args();
+    matches
+        .dispatch_subcommand()
+        .context("Executing subcommand failed.")?;
+    Ok(())
+}
 
 fn main() {
-    println!("Hello, Parsec!");
+    if let Err(err) = run() {
+        err!("{:?}", err);
+        std::process::exit(1);
+    }
 }

src/main.rs

@@ -0,0 +1,15 @@
+// Copyright 2020 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+
+//! Common facilities and options for subcommands.
+
+use structopt::StructOpt;
+
+/// Options for specifying a provider. Most, but not all subcommands require the user to do this,
+/// so it's useful to have these options shared.
+#[derive(Copy, Clone, Debug, StructOpt)]
+pub struct ProviderOpts {
+    /// The provider to list opcodes for.
+    #[structopt(short = "p", long = "provider", default_value = "0")]
+    pub provider: u8,
+}