Bump clap to 4.0.x and adjust to best practices (#12381)

* Bump clap to 3.2.22

* Replace `from_os_str` with `value_parser`

* Replace `from_str` and `try_from_str` with `value_parser`

* Move possible_values to the new format

* Remove unwanted print

* Add missing match branch

* Update clap to 4.0.9 and make it compile

* Replace deprecated `clap` macro with `command` and `value`

* Move remaining `clap` attributes to `arg`

* Remove no-op value_parsers

* Adjust value_parser for state_version

* Remove "deprecated" feature flag and bump to 4.0.11

* Improve range

Co-authored-by: Bastian Köcher <git@kchr.de>

* Apply suggestions

* Trigger CI

* Fix unused error warning

* Fix doc errors

* Fix ArgGroup naming conflict

* Change default_value to default_value_t

* Use 1.. instead of 0..

Co-authored-by: Bastian Köcher <git@kchr.de>

substrate/utils/frame/benchmarking-cli/src/block/bench.rs

@@ -43,15 +43,15 @@ const LOG_TARGET: &'static str = "benchmark::block::weight";
 #[derive(Debug, Default, Serialize, Clone, PartialEq, Args)]
 pub struct BenchmarkParams {
 	/// Number of the first block to consider.
-	#[clap(long)]
+	#[arg(long)]
 	pub from: u32,
 
 	/// Last block number to consider.
-	#[clap(long)]
+	#[arg(long)]
 	pub to: u32,
 
 	/// Number of times that the benchmark should be repeated for each block.
-	#[clap(long, default_value = "10")]
+	#[arg(long, default_value_t = 10)]
 	pub repeat: u32,
 }
 

substrate/utils/frame/benchmarking-cli/src/block/cmd.rs

@@ -71,7 +71,7 @@ pub struct BlockCmd {
 	/// Enable the Trie cache.
 	///
 	/// This should only be used for performance analysis and not for final results.
-	#[clap(long)]
+	#[arg(long)]
 	pub enable_trie_cache: bool,
 }
 

substrate/utils/frame/benchmarking-cli/src/extrinsic/bench.rs

@@ -43,17 +43,17 @@ use crate::shared::{StatSelect, Stats};
 #[derive(Debug, Default, Serialize, Clone, PartialEq, Args)]
 pub struct BenchmarkParams {
 	/// Rounds of warmups before measuring.
-	#[clap(long, default_value = "10")]
+	#[arg(long, default_value_t = 10)]
 	pub warmup: u32,
 
 	/// How many times the benchmark should be repeated.
-	#[clap(long, default_value = "100")]
+	#[arg(long, default_value_t = 100)]
 	pub repeat: u32,
 
 	/// Maximal number of extrinsics that should be put into a block.
 	///
 	/// Only useful for debugging.
-	#[clap(long)]
+	#[arg(long)]
 	pub max_ext_per_block: Option<u32>,
 }
 

substrate/utils/frame/benchmarking-cli/src/extrinsic/cmd.rs

@@ -62,21 +62,21 @@ pub struct ExtrinsicParams {
 	/// List all available pallets and extrinsics.
 	///
 	/// The format is CSV with header `pallet, extrinsic`.
-	#[clap(long)]
+	#[arg(long)]
 	pub list: bool,
 
 	/// Pallet name of the extrinsic to benchmark.
-	#[clap(long, value_name = "PALLET", required_unless_present = "list")]
+	#[arg(long, value_name = "PALLET", required_unless_present = "list")]
 	pub pallet: Option<String>,
 
 	/// Extrinsic to benchmark.
-	#[clap(long, value_name = "EXTRINSIC", required_unless_present = "list")]
+	#[arg(long, value_name = "EXTRINSIC", required_unless_present = "list")]
 	pub extrinsic: Option<String>,
 
 	/// Enable the Trie cache.
 	///
 	/// This should only be used for performance analysis and not for final results.
-	#[clap(long)]
+	#[arg(long)]
 	pub enable_trie_cache: bool,
 }
 

substrate/utils/frame/benchmarking-cli/src/machine/mod.rs

@@ -53,30 +53,30 @@ pub struct MachineCmd {
 	/// Do not return an error if any check fails.
 	///
 	/// Should only be used for debugging.
-	#[clap(long)]
+	#[arg(long)]
 	pub allow_fail: bool,
 
 	/// Set a fault tolerance for passing a requirement.
 	///
 	/// 10% means that the test would pass even when only 90% score was archived.
 	/// Can be used to mitigate outliers of the benchmarks.
-	#[clap(long, default_value = "10.0", value_name = "PERCENT")]
+	#[arg(long, default_value_t = 10.0, value_name = "PERCENT")]
 	pub tolerance: f64,
 
 	/// Time limit for the verification benchmark.
-	#[clap(long, default_value = "5.0", value_name = "SECONDS")]
+	#[arg(long, default_value_t = 5.0, value_name = "SECONDS")]
 	pub verify_duration: f32,
 
 	/// Time limit for the hash function benchmark.
-	#[clap(long, default_value = "5.0", value_name = "SECONDS")]
+	#[arg(long, default_value_t = 5.0, value_name = "SECONDS")]
 	pub hash_duration: f32,
 
 	/// Time limit for the memory benchmark.
-	#[clap(long, default_value = "5.0", value_name = "SECONDS")]
+	#[arg(long, default_value_t = 5.0, value_name = "SECONDS")]
 	pub memory_duration: f32,
 
 	/// Time limit for each disk benchmark.
-	#[clap(long, default_value = "5.0", value_name = "SECONDS")]
+	#[arg(long, default_value_t = 5.0, value_name = "SECONDS")]
 	pub disk_duration: f32,
 }
 

substrate/utils/frame/benchmarking-cli/src/overhead/cmd.rs

@@ -73,13 +73,13 @@ pub struct OverheadParams {
 	/// Add a header to the generated weight output file.
 	///
 	/// Good for adding LICENSE headers.
-	#[clap(long, value_name = "PATH")]
+	#[arg(long, value_name = "PATH")]
 	pub header: Option<PathBuf>,
 
 	/// Enable the Trie cache.
 	///
 	/// This should only be used for performance analysis and not for final results.
-	#[clap(long)]
+	#[arg(long)]
 	pub enable_trie_cache: bool,
 }
 

substrate/utils/frame/benchmarking-cli/src/pallet/mod.rs

@@ -27,69 +27,69 @@ use std::{fmt::Debug, path::PathBuf};
 
 // Add a more relaxed parsing for pallet names by allowing pallet directory names with `-` to be
 // used like crate names with `_`
-fn parse_pallet_name(pallet: &str) -> String {
-	pallet.replace("-", "_")
+fn parse_pallet_name(pallet: &str) -> std::result::Result<String, String> {
+	Ok(pallet.replace("-", "_"))
 }
 
 /// Benchmark the extrinsic weight of FRAME Pallets.
 #[derive(Debug, clap::Parser)]
 pub struct PalletCmd {
 	/// Select a FRAME Pallet to benchmark, or `*` for all (in which case `extrinsic` must be `*`).
-	#[clap(short, long, parse(from_str = parse_pallet_name), required_unless_present_any = ["list", "json-input"])]
+	#[arg(short, long, value_parser = parse_pallet_name, required_unless_present_any = ["list", "json_input"])]
 	pub pallet: Option<String>,
 
 	/// Select an extrinsic inside the pallet to benchmark, or `*` for all.
-	#[clap(short, long, required_unless_present_any = ["list", "json-input"])]
+	#[arg(short, long, required_unless_present_any = ["list", "json_input"])]
 	pub extrinsic: Option<String>,
 
 	/// Select how many samples we should take across the variable components.
-	#[clap(short, long, default_value = "2")]
+	#[arg(short, long, default_value_t = 2)]
 	pub steps: u32,
 
 	/// Indicates lowest values for each of the component ranges.
-	#[clap(long = "low", use_value_delimiter = true)]
+	#[arg(long = "low", value_delimiter = ',')]
 	pub lowest_range_values: Vec<u32>,
 
 	/// Indicates highest values for each of the component ranges.
-	#[clap(long = "high", use_value_delimiter = true)]
+	#[arg(long = "high", value_delimiter = ',')]
 	pub highest_range_values: Vec<u32>,
 
 	/// Select how many repetitions of this benchmark should run from within the wasm.
-	#[clap(short, long, default_value = "1")]
+	#[arg(short, long, default_value_t = 1)]
 	pub repeat: u32,
 
 	/// Select how many repetitions of this benchmark should run from the client.
 	///
 	/// NOTE: Using this alone may give slower results, but will afford you maximum Wasm memory.
-	#[clap(long, default_value = "1")]
+	#[arg(long, default_value_t = 1)]
 	pub external_repeat: u32,
 
 	/// Print the raw results in JSON format.
-	#[clap(long = "json")]
+	#[arg(long = "json")]
 	pub json_output: bool,
 
 	/// Write the raw results in JSON format into the given file.
-	#[clap(long, conflicts_with = "json-output")]
+	#[arg(long, conflicts_with = "json_output")]
 	pub json_file: Option<PathBuf>,
 
 	/// Don't print the median-slopes linear regression analysis.
-	#[clap(long)]
+	#[arg(long)]
 	pub no_median_slopes: bool,
 
 	/// Don't print the min-squares linear regression analysis.
-	#[clap(long)]
+	#[arg(long)]
 	pub no_min_squares: bool,
 
 	/// Output the benchmarks to a Rust file at the given path.
-	#[clap(long)]
+	#[arg(long)]
 	pub output: Option<PathBuf>,
 
 	/// Add a header file to your outputted benchmarks.
-	#[clap(long)]
+	#[arg(long)]
 	pub header: Option<PathBuf>,
 
 	/// Path to Handlebars template file used for outputting benchmark results. (Optional)
-	#[clap(long)]
+	#[arg(long)]
 	pub template: Option<PathBuf>,
 
 	#[allow(missing_docs)]
@@ -100,25 +100,25 @@ pub struct PalletCmd {
 	/// * min-squares (default)
 	/// * median-slopes
 	/// * max (max of min squares and median slopes for each value)
-	#[clap(long)]
+	#[arg(long)]
 	pub output_analysis: Option<String>,
 
 	/// Set the heap pages while running benchmarks. If not set, the default value from the client
 	/// is used.
-	#[clap(long)]
+	#[arg(long)]
 	pub heap_pages: Option<u64>,
 
 	/// Disable verification logic when running benchmarks.
-	#[clap(long)]
+	#[arg(long)]
 	pub no_verify: bool,
 
 	/// Display and run extra benchmarks that would otherwise not be needed for weight
 	/// construction.
-	#[clap(long)]
+	#[arg(long)]
 	pub extra: bool,
 
 	/// Estimate PoV size.
-	#[clap(long)]
+	#[arg(long)]
 	pub record_proof: bool,
 
 	#[allow(missing_docs)]
@@ -126,50 +126,50 @@ pub struct PalletCmd {
 	pub shared_params: sc_cli::SharedParams,
 
 	/// The execution strategy that should be used for benchmarks.
-	#[clap(long, value_name = "STRATEGY", arg_enum, ignore_case = true)]
+	#[arg(long, value_name = "STRATEGY", value_enum, ignore_case = true)]
 	pub execution: Option<ExecutionStrategy>,
 
 	/// Method for executing Wasm runtime code.
-	#[clap(
+	#[arg(
 		long = "wasm-execution",
 		value_name = "METHOD",
-		possible_values = WasmExecutionMethod::variants(),
+		value_enum,
 		ignore_case = true,
-		default_value = DEFAULT_WASM_EXECUTION_METHOD,
+		default_value_t = DEFAULT_WASM_EXECUTION_METHOD,
 	)]
 	pub wasm_method: WasmExecutionMethod,
 
 	/// The WASM instantiation method to use.
 	///
 	/// Only has an effect when `wasm-execution` is set to `compiled`.
-	#[clap(
+	#[arg(
 		long = "wasm-instantiation-strategy",
 		value_name = "STRATEGY",
 		default_value_t = DEFAULT_WASMTIME_INSTANTIATION_STRATEGY,
-		arg_enum,
+		value_enum,
 	)]
 	pub wasmtime_instantiation_strategy: WasmtimeInstantiationStrategy,
 
 	/// Limit the memory the database cache can use.
-	#[clap(long = "db-cache", value_name = "MiB", default_value = "1024")]
+	#[arg(long = "db-cache", value_name = "MiB", default_value_t = 1024)]
 	pub database_cache_size: u32,
 
 	/// List the benchmarks that match your query rather than running them.
 	///
 	/// When nothing is provided, we list all benchmarks.
-	#[clap(long)]
+	#[arg(long)]
 	pub list: bool,
 
 	/// If enabled, the storage info is not displayed in the output next to the analysis.
 	///
 	/// This is independent of the storage info appearing in the *output file*. Use a Handlebar
 	/// template for that purpose.
-	#[clap(long)]
+	#[arg(long)]
 	pub no_storage_info: bool,
 
 	/// A path to a `.json` file with existing benchmark results generated with `--json` or
 	/// `--json-file`. When specified the benchmarks are not actually executed, and the data for
 	/// the analysis is read from this file.
-	#[clap(long)]
+	#[arg(long)]
 	pub json_input: Option<PathBuf>,
 }

substrate/utils/frame/benchmarking-cli/src/shared/mod.rs

@@ -95,22 +95,22 @@ pub fn check_build_profile() -> Result<(), String> {
 
 /// Parameters to configure how the host info will be determined.
 #[derive(Debug, Default, Serialize, Clone, PartialEq, Args)]
-#[clap(rename_all = "kebab-case")]
+#[command(rename_all = "kebab-case")]
 pub struct HostInfoParams {
 	/// Manually override the hostname to use.
-	#[clap(long)]
+	#[arg(long)]
 	pub hostname_override: Option<String>,
 
 	/// Specify a fallback hostname if no-one could be detected automatically.
 	///
 	/// Note: This only exists to make the `hostname` function infallible.
-	#[clap(long, default_value = "<UNKNOWN>")]
+	#[arg(long, default_value = "<UNKNOWN>")]
 	pub hostname_fallback: String,
 
 	/// Specify a fallback CPU name if no-one could be detected automatically.
 	///
 	/// Note: This only exists to make the `cpuname` function infallible.
-	#[clap(long, default_value = "<UNKNOWN>")]
+	#[arg(long, default_value = "<UNKNOWN>")]
 	pub cpuname_fallback: String,
 }
 

substrate/utils/frame/benchmarking-cli/src/shared/weight_params.rs

@@ -31,23 +31,23 @@ pub struct WeightParams {
 	/// File or directory to write the *weight* files to.
 	///
 	/// For Substrate this should be `frame/support/src/weights`.
-	#[clap(long)]
+	#[arg(long)]
 	pub weight_path: Option<PathBuf>,
 
 	/// Select a specific metric to calculate the final weight output.
-	#[clap(long = "metric", default_value = "average")]
+	#[arg(long = "metric", default_value = "average")]
 	pub weight_metric: StatSelect,
 
 	/// Multiply the resulting weight with the given factor. Must be positive.
 	///
 	/// Is applied before `weight_add`.
-	#[clap(long = "mul", default_value = "1")]
+	#[arg(long = "mul", default_value_t = 1.0)]
 	pub weight_mul: f64,
 
 	/// Add the given offset to the resulting weight.
 	///
 	/// Is applied after `weight_mul`.
-	#[clap(long = "add", default_value = "0")]
+	#[arg(long = "add", default_value_t = 0)]
 	pub weight_add: u64,
 }
 

substrate/utils/frame/benchmarking-cli/src/storage/cmd.rs

@@ -68,54 +68,54 @@ pub struct StorageParams {
 	pub hostinfo: HostInfoParams,
 
 	/// Skip the `read` benchmark.
-	#[clap(long)]
+	#[arg(long)]
 	pub skip_read: bool,
 
 	/// Skip the `write` benchmark.
-	#[clap(long)]
+	#[arg(long)]
 	pub skip_write: bool,
 
 	/// Specify the Handlebars template to use for outputting benchmark results.
-	#[clap(long)]
+	#[arg(long)]
 	pub template_path: Option<PathBuf>,
 
 	/// Add a header to the generated weight output file.
 	///
 	/// Good for adding LICENSE headers.
-	#[clap(long, value_name = "PATH")]
+	#[arg(long, value_name = "PATH")]
 	pub header: Option<PathBuf>,
 
 	/// Path to write the raw 'read' results in JSON format to. Can be a file or directory.
-	#[clap(long)]
+	#[arg(long)]
 	pub json_read_path: Option<PathBuf>,
 
 	/// Path to write the raw 'write' results in JSON format to. Can be a file or directory.
-	#[clap(long)]
+	#[arg(long)]
 	pub json_write_path: Option<PathBuf>,
 
 	/// Rounds of warmups before measuring.
-	#[clap(long, default_value = "1")]
+	#[arg(long, default_value_t = 1)]
 	pub warmups: u32,
 
 	/// The `StateVersion` to use. Substrate `--dev` should use `V1` and Polkadot `V0`.
 	/// Selecting the wrong version can corrupt the DB.
-	#[clap(long, possible_values = ["0", "1"])]
+	#[arg(long, value_parser = clap::value_parser!(u8).range(0..=1))]
 	pub state_version: u8,
 
 	/// Trie cache size in bytes.
 	///
 	/// Providing `0` will disable the cache.
-	#[clap(long, value_name = "Bytes", default_value = "67108864")]
+	#[arg(long, value_name = "Bytes", default_value_t = 67108864)]
 	pub trie_cache_size: usize,
 
 	/// Enable the Trie cache.
 	///
 	/// This should only be used for performance analysis and not for final results.
-	#[clap(long)]
+	#[arg(long)]
 	pub enable_trie_cache: bool,
 
 	/// Include child trees in benchmark.
-	#[clap(long)]
+	#[arg(long)]
 	pub include_child_trees: bool,
 }