CLI - Warn when using an unstable command (#2227)

Co-authored-by: Zeke Foppa <bfops@users.noreply.github.com>

crates/cli/src/subcommands/call.rs

@@ -1,7 +1,7 @@
 use crate::common_args;
 use crate::config::Config;
 use crate::edit_distance::{edit_distance, find_best_match_for_name};
-use crate::util;
+use crate::util::{self, UNSTABLE_WARNING};
 use crate::util::{add_auth_header_opt, database_identity, get_auth_header};
 use anyhow::{bail, Context, Error};
 use clap::{Arg, ArgMatches};
@@ -16,7 +16,10 @@ use std::iter;
 
 pub fn cli() -> clap::Command {
     clap::Command::new("call")
-        .about("Invokes a reducer function in a database")
+        .about(format!(
+            "Invokes a reducer function in a database.\n\n{}",
+            UNSTABLE_WARNING
+        ))
         .arg(
             Arg::new("database")
                 .required(true)
@@ -35,6 +38,7 @@ pub fn cli() -> clap::Command {
 }
 
 pub async fn exec(mut config: Config, args: &ArgMatches) -> Result<(), Error> {
+    eprintln!("{}\n", UNSTABLE_WARNING);
     let database = args.get_one::<String>("database").unwrap();
     let reducer_name = args.get_one::<String>("reducer_name").unwrap();
     let arguments = args.get_many::<String>("arguments");

crates/cli/src/subcommands/describe.rs

@@ -1,11 +1,14 @@
 use crate::common_args;
 use crate::config::Config;
-use crate::util::{add_auth_header_opt, database_identity, get_auth_header};
+use crate::util::{add_auth_header_opt, database_identity, get_auth_header, UNSTABLE_WARNING};
 use clap::{Arg, ArgMatches};
 
 pub fn cli() -> clap::Command {
     clap::Command::new("describe")
-        .about("Describe the structure of a database or entities within it")
+        .about(format!(
+            "Describe the structure of a database or entities within it.\n\n{}",
+            UNSTABLE_WARNING
+        ))
         .arg(
             Arg::new("database")
                 .required(true)
@@ -28,6 +31,8 @@ pub fn cli() -> clap::Command {
 }
 
 pub async fn exec(mut config: Config, args: &ArgMatches) -> Result<(), anyhow::Error> {
+    eprintln!("{}\n", UNSTABLE_WARNING);
+
     let database = args.get_one::<String>("database").unwrap();
     let entity_name = args.get_one::<String>("entity_name");
     let entity_type = args.get_one::<String>("entity_type");

crates/cli/src/subcommands/energy.rs

@@ -3,11 +3,14 @@ use crate::common_args;
 use clap::ArgMatches;
 
 use crate::config::Config;
-use crate::util::{self, get_login_token_or_log_in};
+use crate::util::{self, get_login_token_or_log_in, UNSTABLE_WARNING};
 
 pub fn cli() -> clap::Command {
     clap::Command::new("energy")
-        .about("Invokes commands related to database budgets")
+        .about(format!(
+            "Invokes commands related to database budgets.\n\n{}",
+            UNSTABLE_WARNING
+        ))
         .args_conflicts_with_subcommands(true)
         .subcommand_required(true)
         .subcommands(get_energy_subcommands())
@@ -39,6 +42,7 @@ async fn exec_subcommand(config: Config, cmd: &str, args: &ArgMatches) -> Result
 
 pub async fn exec(config: Config, args: &ArgMatches) -> Result<(), anyhow::Error> {
     let (cmd, subcommand_args) = args.subcommand().expect("Subcommand required");
+    eprintln!("{}\n", UNSTABLE_WARNING);
     exec_subcommand(config, cmd, subcommand_args).await
 }
 

crates/cli/src/subcommands/init.rs

@@ -1,6 +1,6 @@
-use crate::detect::find_executable;
 use crate::util::ModuleLanguage;
 use crate::Config;
+use crate::{detect::find_executable, util::UNSTABLE_WARNING};
 use anyhow::Context;
 use clap::{Arg, ArgMatches};
 use colored::Colorize;
@@ -8,7 +8,7 @@ use std::path::{Path, PathBuf};
 
 pub fn cli() -> clap::Command {
     clap::Command::new("init")
-        .about("Initializes a new spacetime project")
+        .about(format!("Initializes a new spacetime project.\n\n{}", UNSTABLE_WARNING))
         .arg(
             Arg::new("project-path")
                 .value_parser(clap::value_parser!(PathBuf))
@@ -114,6 +114,8 @@ fn check_for_git() -> bool {
 }
 
 pub async fn exec(_config: Config, args: &ArgMatches) -> Result<(), anyhow::Error> {
+    eprintln!("{}\n", UNSTABLE_WARNING);
+
     let project_path = args.get_one::<PathBuf>("project-path").unwrap();
     let project_lang = *args.get_one::<ModuleLanguage>("lang").unwrap();
 

crates/cli/src/subcommands/list.rs

@@ -1,6 +1,7 @@
 use crate::common_args;
 use crate::util;
 use crate::util::get_login_token_or_log_in;
+use crate::util::UNSTABLE_WARNING;
 use crate::Config;
 use clap::{ArgMatches, Command};
 use reqwest::StatusCode;
@@ -13,7 +14,10 @@ use tabled::{
 
 pub fn cli() -> Command {
     Command::new("list")
-        .about("Lists the databases attached to an identity")
+        .about(format!(
+            "Lists the databases attached to an identity.\n\n{}",
+            UNSTABLE_WARNING
+        ))
         .arg(common_args::server().help("The nickname, host name or URL of the server from which to list databases"))
         .arg(common_args::yes())
 }
@@ -30,6 +34,8 @@ struct IdentityRow {
 }
 
 pub async fn exec(mut config: Config, args: &ArgMatches) -> Result<(), anyhow::Error> {
+    eprintln!("{}\n", UNSTABLE_WARNING);
+
     let server = args.get_one::<String>("server").map(|s| s.as_ref());
     let force = args.get_flag("force");
     let token = get_login_token_or_log_in(&mut config, server, !force).await?;

crates/cli/src/subcommands/server.rs

@@ -1,6 +1,6 @@
 use crate::{
     common_args,
-    util::{host_or_url_to_host_and_protocol, spacetime_server_fingerprint, y_or_n, VALID_PROTOCOLS},
+    util::{host_or_url_to_host_and_protocol, spacetime_server_fingerprint, y_or_n, UNSTABLE_WARNING, VALID_PROTOCOLS},
     Config,
 };
 use anyhow::Context;
@@ -16,7 +16,10 @@ pub fn cli() -> Command {
         .args_conflicts_with_subcommands(true)
         .subcommand_required(true)
         .subcommands(get_subcommands())
-        .about("Manage the connection to the SpacetimeDB server")
+        .about(format!(
+            "Manage the connection to the SpacetimeDB server.\n\n{}",
+            UNSTABLE_WARNING
+        ))
 }
 
 fn get_subcommands() -> Vec<Command> {
@@ -113,6 +116,7 @@ fn get_subcommands() -> Vec<Command> {
 
 pub async fn exec(config: Config, paths: &SpacetimePaths, args: &ArgMatches) -> Result<(), anyhow::Error> {
     let (cmd, subcommand_args) = args.subcommand().expect("Subcommand required");
+    eprintln!("{}\n", UNSTABLE_WARNING);
     exec_subcommand(config, paths, cmd, subcommand_args).await
 }
 

crates/cli/src/subcommands/sql.rs

@@ -11,11 +11,11 @@ use tabled::settings::Style;
 
 use crate::config::Config;
 use crate::errors::error_for_status;
-use crate::util::{database_identity, get_auth_header};
+use crate::util::{database_identity, get_auth_header, UNSTABLE_WARNING};
 
 pub fn cli() -> clap::Command {
     clap::Command::new("sql")
-        .about("Runs a SQL query on the database.")
+        .about(format!("Runs a SQL query on the database.\n\n{}", UNSTABLE_WARNING))
         .arg(
             Arg::new("database")
                 .required(true)
@@ -130,6 +130,7 @@ fn stmt_result_to_table(stmt_result: &StmtResultJson) -> anyhow::Result<tabled::
 }
 
 pub async fn exec(config: Config, args: &ArgMatches) -> Result<(), anyhow::Error> {
+    eprintln!("{}\n", UNSTABLE_WARNING);
     let interactive = args.get_one::<bool>("interactive").unwrap_or(&false);
     if *interactive {
         let con = parse_req(config, args).await?;

crates/cli/src/subcommands/subscribe.rs

@@ -17,11 +17,15 @@ use tokio_tungstenite::tungstenite::Message as WsMessage;
 use crate::api::ClientApi;
 use crate::common_args;
 use crate::sql::parse_req;
+use crate::util::UNSTABLE_WARNING;
 use crate::Config;
 
 pub fn cli() -> clap::Command {
     clap::Command::new("subscribe")
-        .about("Subscribe to SQL queries on the database.")
+        .about(format!(
+            "Subscribe to SQL queries on the database.\n\n{}",
+            UNSTABLE_WARNING
+        ))
         .arg(
             Arg::new("database")
                 .required(true)
@@ -121,6 +125,8 @@ struct SubscriptionTable {
 }
 
 pub async fn exec(config: Config, args: &ArgMatches) -> Result<(), anyhow::Error> {
+    eprintln!("{}\n", UNSTABLE_WARNING);
+
     let queries = args.get_many::<String>("query").unwrap();
     let num = args.get_one::<u32>("num-updates").copied();
     let timeout = args.get_one::<u32>("timeout").copied();

crates/cli/src/util.rs

@@ -15,6 +15,8 @@ use std::path::Path;
 use crate::config::Config;
 use crate::login::{spacetimedb_login_force, DEFAULT_AUTH_HOST};
 
+pub const UNSTABLE_WARNING: &str = "WARNING: This command is UNSTABLE and subject to breaking changes.";
+
 /// Determine the identity of the `database`.
 pub async fn database_identity(
     config: &Config,