enhancement(dev): Add dedicated dev tool

vdev/Cargo.toml

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+[package]
+name = "vdev"
+version = "0.1.0"
+edition = "2021"
+authors = ["Vector Contributors <vector@datadoghq.com>"]
+license = "MPL-2.0"
+readme = "README.md"
+publish = false
+
+[dependencies]
+anyhow = "1.0.66"
+cached = "0.40.0"
+clap = { version = "4.0.18", features = ["derive"] }
+clap-verbosity-flag = "2.0.0"
+confy = "0.5.1"
+# remove this when stabilized https://doc.rust-lang.org/stable/std/path/fn.absolute.html
+dunce = "1.0.3"
+env_logger = "0.9.1"
+home = "0.5.4"
+log = "0.4.17"
+os_info = { version = "3.5.1", default-features = false }
+# watch https://github.com/epage/anstyle for official interop with Clap
+owo-colors = { version = "3.5.0", features = ["supports-colors"] }
+serde = { version = "1.0", features = ["derive"] }
+
+# https://github.com/rust-lang/cargo/issues/6745#issuecomment-472667516
+[workspace]

vdev/README.md

@@ -0,0 +1,58 @@
+# vdev
+
+-----
+
+This is the command line tooling for Vector development.
+
+Table of Contents:
+
+- [Installation](#installation)
+- [Configuration](#configuration)
+  - [Repository](#repository)
+  - [Starship](#starship)
+
+## Installation
+
+```text
+cargo install -f --path vdev
+```
+
+## Configuration
+
+### Repository
+
+Setting the path to the repository explicitly allows the application to be used at any time no matter the current working directory.
+
+```text
+vdev config set repo .
+```
+
+To test, enter your home directory and then run:
+
+```text
+vdev exec ls
+```
+
+### Starship
+
+A custom command for the [Starship](https://starship.rs) prompt is available.
+
+```toml
+format = """
+...
+${custom.vdev}\
+...
+$line_break\
+...
+$character"""
+
+# <clipped>
+
+[custom.vdev]
+command = "vdev meta starship"
+when = true
+# Windows
+# shell = ["cmd", "/C"]
+# Other
+# shell = ["sh", "--norc"]
+```

vdev/src/app.rs

@@ -0,0 +1,134 @@
+use log::{Level, LevelFilter};
+use owo_colors::{
+    OwoColorize,
+    Stream::{Stderr, Stdout},
+};
+use std::env;
+
+use crate::config::{Config, ConfigFile};
+use crate::platform::Platform;
+use crate::repo::core::Repository;
+
+pub struct Application {
+    pub(crate) config_file: ConfigFile,
+    pub(crate) config: Config,
+    pub(crate) repo: Repository,
+    pub(crate) platform: Platform,
+    verbosity: LevelFilter,
+}
+
+impl Application {
+    pub fn new(verbosity: LevelFilter) -> Application {
+        let platform = Platform::new();
+        let config_file = ConfigFile::new();
+        let config_model = config_file.load();
+
+        // Set the path to the repository for the entire application
+        let path = if !config_model.repo.is_empty() {
+            config_model.repo.to_string()
+        } else {
+            match env::current_dir() {
+                Ok(p) => p.display().to_string(),
+                Err(_) => ".".to_string(),
+            }
+        };
+
+        Application {
+            config_file: config_file,
+            config: config_model,
+            repo: Repository::new(path),
+            platform: platform,
+            verbosity: verbosity,
+        }
+    }
+
+    pub fn exit(&self, code: i32) {
+        std::process::exit(code);
+    }
+
+    pub fn abort<T: AsRef<str>>(&self, text: T) {
+        self.display_error(text);
+        self.exit(1);
+    }
+
+    pub fn display<T: AsRef<str>>(&self, text: T) {
+        // Simply bold rather than bright white for terminals with white backgrounds
+        println!(
+            "{}",
+            text.as_ref().if_supports_color(Stdout, |text| text.bold())
+        );
+    }
+
+    #[allow(dead_code)]
+    pub fn display_trace<T: AsRef<str>>(&self, text: T) {
+        if Level::Trace <= self.verbosity {
+            eprintln!(
+                "{}",
+                text.as_ref().if_supports_color(Stderr, |text| text.bold())
+            );
+        }
+    }
+
+    #[allow(dead_code)]
+    pub fn display_debug<T: AsRef<str>>(&self, text: T) {
+        if Level::Debug <= self.verbosity {
+            eprintln!(
+                "{}",
+                text.as_ref().if_supports_color(Stderr, |text| text.bold())
+            );
+        }
+    }
+
+    #[allow(dead_code)]
+    pub fn display_info<T: AsRef<str>>(&self, text: T) {
+        if Level::Info <= self.verbosity {
+            eprintln!(
+                "{}",
+                text.as_ref().if_supports_color(Stderr, |text| text.bold())
+            );
+        }
+    }
+
+    #[allow(dead_code)]
+    pub fn display_success<T: AsRef<str>>(&self, text: T) {
+        if Level::Info <= self.verbosity {
+            eprintln!(
+                "{}",
+                text.as_ref()
+                    .if_supports_color(Stderr, |text| text.bright_cyan())
+            );
+        }
+    }
+
+    #[allow(dead_code)]
+    pub fn display_waiting<T: AsRef<str>>(&self, text: T) {
+        if Level::Info <= self.verbosity {
+            eprintln!(
+                "{}",
+                text.as_ref()
+                    .if_supports_color(Stderr, |text| text.bright_magenta())
+            );
+        }
+    }
+
+    #[allow(dead_code)]
+    pub fn display_warning<T: AsRef<str>>(&self, text: T) {
+        if Level::Warn <= self.verbosity {
+            eprintln!(
+                "{}",
+                text.as_ref()
+                    .if_supports_color(Stderr, |text| text.bright_yellow())
+            );
+        }
+    }
+
+    pub fn display_error<T: AsRef<str>>(&self, text: T) {
+        if Level::Error <= self.verbosity {
+            eprintln!(
+                "{}",
+                text.as_ref()
+                    .if_supports_color(Stderr, |text| text.bright_red())
+            );
+        }
+    }
+}

vdev/src/commands/build.rs

@@ -0,0 +1,55 @@
+use anyhow::Result;
+use clap::Args;
+
+use crate::app::Application;
+
+/// Build Vector
+#[derive(Args, Debug)]
+#[command()]
+pub struct Cli {
+    /// The build target e.g. x86_64-unknown-linux-musl
+    target: Option<String>,
+
+    /// Build with optimizations
+    #[arg(short, long)]
+    release: bool,
+
+    /// The feature to activate (multiple allowed)
+    #[arg(short = 'F', long)]
+    feature: Vec<String>,
+}
+
+impl Cli {
+    pub fn exec(&self, app: &Application) -> Result<()> {
+        let mut command = app.repo.command("cargo");
+        command.args(["build", "--no-default-features"]);
+
+        if self.release {
+            command.arg("--release");
+        }
+
+        command.arg("--features");
+        if !self.feature.is_empty() {
+            command.args([self.feature.join(",")]);
+        } else {
+            if app.platform.windows() {
+                command.arg("default-msvc");
+            } else {
+                command.arg("default");
+            }
+        };
+
+        if let Some(target) = self.target.as_deref() {
+            command.args(["--target", target]);
+        } else {
+            command.args(["--target", &app.platform.default_target()]);
+        };
+
+        let status = command.status()?;
+        if !status.success() {
+            app.abort(format!("failed with exit code: {status}"));
+        }
+
+        Ok(())
+    }
+}

vdev/src/commands/cli.rs

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+use anyhow::Result;
+use clap::{Parser, Subcommand};
+use clap_verbosity_flag::{InfoLevel, Verbosity};
+
+use crate::app::Application;
+use crate::commands;
+
+/// Vector's unified dev tool
+#[derive(Parser, Debug)]
+#[
+    command(
+        bin_name = "vdev",
+        author,
+        version,
+        about,
+        disable_help_subcommand = true,
+        long_about = None,
+    )
+]
+pub struct Cli {
+    #[clap(flatten)]
+    pub(crate) verbose: Verbosity<InfoLevel>,
+
+    #[command(subcommand)]
+    command: Commands,
+}
+
+#[derive(Subcommand, Debug)]
+enum Commands {
+    /// Build Vector
+    Build(commands::build::Cli),
+    /// Manage the config file
+    Config(commands::config::cli::Cli),
+    /// Execute a command within the repository
+    Exec(commands::exec::Cli),
+    /// Collection of useful utilities
+    Meta(commands::meta::cli::Cli),
+    /// Show information about the current environment
+    Status(commands::status::Cli),
+}
+
+impl Cli {
+    pub fn exec(&self, app: &Application) -> Result<()> {
+        match &self.command {
+            Commands::Build(cli) => cli.exec(&app),
+            Commands::Config(cli) => cli.exec(&app),
+            Commands::Exec(cli) => cli.exec(&app),
+            Commands::Meta(cli) => cli.exec(&app),
+            Commands::Status(cli) => cli.exec(&app),
+        }
+    }
+}

vdev/src/commands/config/cli.rs

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+use anyhow::Result;
+use clap::{Args, Subcommand};
+
+use crate::app::Application;
+use crate::commands;
+
+/// Manage the config file
+#[derive(Args, Debug)]
+#[command()]
+pub struct Cli {
+    #[command(subcommand)]
+    command: Commands,
+}
+
+#[derive(Subcommand, Debug)]
+enum Commands {
+    /// Locate the config file
+    Find(commands::config::find::Cli),
+    /// Modify the config file
+    Set(commands::config::set::cli::Cli),
+}
+
+impl Cli {
+    pub fn exec(&self, app: &Application) -> Result<()> {
+        match &self.command {
+            Commands::Find(cli) => cli.exec(&app),
+            Commands::Set(cli) => cli.exec(&app),
+        }
+    }
+}

vdev/src/commands/config/find.rs

@@ -0,0 +1,17 @@
+use anyhow::Result;
+use clap::Args;
+
+use crate::app::Application;
+
+/// Locate the config file
+#[derive(Args, Debug)]
+#[command()]
+pub struct Cli {}
+
+impl Cli {
+    pub fn exec(&self, app: &Application) -> Result<()> {
+        app.display(format!("{}", app.config_file.path().display()));
+
+        Ok(())
+    }
+}

vdev/src/commands/config/mod.rs

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+pub mod cli;
+pub mod find;
+pub mod set;