Add item subcommand

crates/pile-dataset/src/dataset.rs

@@ -1,5 +1,7 @@
 use chrono::{DateTime, Utc};
-use pile_config::{ConfigToml, Label, Source, objectpath::ObjectPath};
+use pile_config::{
+	ConfigToml, DatasetConfig, Label, Source, objectpath::ObjectPath, pattern::GroupPattern,
+};
 use pile_toolbox::cancelabletask::{CancelFlag, CancelableTaskError};
 use pile_value::{
 	extract::traits::ExtractState,
@@ -66,15 +68,109 @@ impl Dataset {
 
 /// An opened dataset: config, working directory, and all opened sources.
 pub struct Datasets {
-	pub path_config: PathBuf,
+	pub path_config: Option<PathBuf>,
 	pub path_parent: PathBuf,
-	pub path_workdir: PathBuf,
+	pub path_workdir: Option<PathBuf>,
 
 	pub config: ConfigToml,
 	pub sources: HashMap<Label, Dataset>,
 }
 
 impl Datasets {
+	#[expect(clippy::unwrap_used)]
+	pub fn virt_source() -> Label {
+		Label::new("virtual-source").unwrap()
+	}
+
+	#[expect(clippy::unwrap_used)]
+	pub async fn virt(parent: impl Into<PathBuf>) -> Result<Self, std::io::Error> {
+		let path_parent = parent.into();
+
+		let config = ConfigToml {
+			dataset: DatasetConfig {
+				name: Label::new("virtual-dataset").unwrap(),
+				working_dir: None,
+
+				source: [(
+					Self::virt_source(),
+					Source::Filesystem {
+						enabled: true,
+						path: path_parent.clone(),
+						pattern: GroupPattern::default(),
+					},
+				)]
+				.into_iter()
+				.collect(),
+			},
+			schema: HashMap::new(),
+			fts: None,
+		};
+
+		let mut sources = HashMap::new();
+		for (label, source) in &config.dataset.source {
+			match source {
+				Source::Filesystem {
+					enabled,
+					path,
+					pattern,
+				} => {
+					if !enabled {
+						continue;
+					}
+
+					sources.insert(
+						label.clone(),
+						Dataset::Dir(
+							DirDataSource::new(label, path_parent.join(path), pattern.clone())
+								.await?,
+						),
+					);
+				}
+
+				Source::S3 {
+					enabled,
+					bucket,
+					prefix,
+					endpoint,
+					region,
+					credentials,
+					pattern,
+				} => {
+					if !enabled {
+						continue;
+					}
+
+					match S3DataSource::new(
+						label,
+						bucket.clone(),
+						prefix.clone(),
+						endpoint.clone(),
+						region.clone(),
+						credentials,
+						pattern.clone(),
+					)
+					.await
+					{
+						Ok(ds) => {
+							sources.insert(label.clone(), Dataset::S3(ds));
+						}
+						Err(err) => {
+							warn!("Could not open S3 source {label}: {err}");
+						}
+					}
+				}
+			}
+		}
+
+		return Ok(Self {
+			path_config: None,
+			path_workdir: None,
+			path_parent,
+			config,
+			sources,
+		});
+	}
+
 	pub async fn open(config: impl Into<PathBuf>) -> Result<Self, std::io::Error> {
 		let path_config = config.into();
 		let path_parent = path_config
@@ -168,9 +264,9 @@ impl Datasets {
 		}
 
 		return Ok(Self {
-			path_config,
+			path_config: Some(path_config),
+			path_workdir: Some(path_workdir),
 			path_parent,
-			path_workdir,
 			config,
 			sources,
 		});
@@ -216,8 +312,16 @@ impl Datasets {
 		_threads: usize,
 		flag: Option<CancelFlag>,
 	) -> Result<(), CancelableTaskError<DatasetError>> {
-		let fts_tmp_dir = self.path_workdir.join(".tmp-fts");
-		let fts_dir = self.path_workdir.join("fts");
+		let workdir = match self.path_workdir.as_ref() {
+			Some(x) => x,
+			None => {
+				warn!("Skipping fts_refresh, no workdir");
+				return Ok(());
+			}
+		};
+
+		let fts_tmp_dir = workdir.join(".tmp-fts");
+		let fts_dir = workdir.join("fts");
 
 		if fts_tmp_dir.is_dir() {
 			warn!("Removing temporary index in {}", fts_dir.display());
@@ -315,7 +419,15 @@ impl Datasets {
 		query: &str,
 		top_n: usize,
 	) -> Result<Vec<FtsLookupResult>, DatasetError> {
-		let fts_dir = self.path_workdir.join("fts");
+		let workdir = match self.path_workdir.as_ref() {
+			Some(x) => x,
+			None => {
+				warn!("Skipping fts_lookup, no workdir");
+				return Ok(Vec::new());
+			}
+		};
+
+		let fts_dir = workdir.join("fts");
 
 		if !fts_dir.exists() {
 			return Err(DatasetError::NoFtsIndex);
@@ -335,7 +447,12 @@ impl Datasets {
 
 	/// Time at which fts was created
 	pub fn ts_fts(&self) -> Result<Option<DateTime<Utc>>, std::io::Error> {
-		let fts_dir = self.path_workdir.join("fts");
+		let workdir = match self.path_workdir.as_ref() {
+			Some(x) => x,
+			None => return Ok(None),
+		};
+
+		let fts_dir = workdir.join("fts");
 
 		if !fts_dir.exists() {
 			return Ok(None);

crates/pile/src/command/item.rs

@@ -0,0 +1,71 @@
+use anyhow::{Context, Result};
+use clap::Args;
+use pile_config::{Label, objectpath::ObjectPath};
+use pile_dataset::Datasets;
+use pile_toolbox::cancelabletask::{CancelFlag, CancelableTaskError};
+use pile_value::{extract::traits::ExtractState, value::PileValue};
+use std::path::PathBuf;
+
+use crate::{CliCmd, GlobalContext};
+
+#[derive(Debug, Args)]
+pub struct ItemCommand {
+	/// Source name (as defined in pile.toml)
+	source: String,
+
+	/// Item key within the source
+	key: String,
+
+	/// If present, extract a specific field
+	#[arg(long, short = 'p')]
+	path: Option<String>,
+
+	/// Path to dataset config
+	#[arg(long, short = 'c', default_value = "./pile.toml")]
+	config: PathBuf,
+}
+
+impl CliCmd for ItemCommand {
+	#[expect(clippy::print_stdout)]
+	#[expect(clippy::unwrap_used)]
+	async fn run(
+		self,
+		_ctx: GlobalContext,
+		_flag: CancelFlag,
+	) -> Result<i32, CancelableTaskError<anyhow::Error>> {
+		let source = Label::new(&self.source)
+			.ok_or_else(|| anyhow::anyhow!("invalid source name {:?}", self.source))?;
+
+		let ds = Datasets::open(&self.config)
+			.await
+			.with_context(|| format!("while opening dataset for {}", self.config.display()))?;
+
+		let state = ExtractState { ignore_mime: false };
+
+		let json = if let Some(path_str) = self.path {
+			let path: ObjectPath = path_str
+				.parse()
+				.with_context(|| format!("invalid path {path_str:?}"))?;
+
+			ds.get_field(&state, &source, &self.key, &path)
+				.await
+				.with_context(|| format!("while extracting {}", self.key))?
+				.ok_or_else(|| {
+					anyhow::anyhow!("{:?} not found in source {:?}", self.key, self.source)
+				})?
+		} else {
+			let item = ds.get(&source, &self.key).await.ok_or_else(|| {
+				anyhow::anyhow!("{:?} not found in source {:?}", self.key, self.source)
+			})?;
+
+			let item = PileValue::Item(item);
+			item.to_json(&state)
+				.await
+				.with_context(|| format!("while extracting {}", self.key))?
+		};
+
+		let json = serde_json::to_string_pretty(&json).unwrap();
+		println!("{json}");
+		return Ok(0);
+	}
+}

crates/pile/src/command/mod.rs

@@ -8,6 +8,7 @@ mod check;
 mod fields;
 mod index;
 mod init;
+mod item;
 mod list;
 mod lookup;
 mod probe;
@@ -59,12 +60,18 @@ pub enum SubCommand {
 		cmd: fields::FieldsCommand,
 	},
 
-	/// Print all metadata from an item
+	/// Print all metadata from a file
 	Probe {
 		#[command(flatten)]
 		cmd: probe::ProbeCommand,
 	},
 
+	/// Print all metadata from an item
+	Item {
+		#[command(flatten)]
+		cmd: item::ItemCommand,
+	},
+
 	/// Expose a dataset via an http api
 	Serve {
 		#[command(flatten)]
@@ -88,6 +95,7 @@ impl CliCmdDispatch for SubCommand {
 			Self::Lookup { cmd } => cmd.start(ctx),
 			Self::Fields { cmd } => cmd.start(ctx),
 			Self::Probe { cmd } => cmd.start(ctx),
+			Self::Item { cmd } => cmd.start(ctx),
 			Self::Serve { cmd } => cmd.start(ctx),
 			Self::Upload { cmd } => cmd.start(ctx),
 

crates/pile/src/command/probe.rs

@@ -1,6 +1,6 @@
 use anyhow::{Context, Result};
 use clap::Args;
-use pile_config::{Label, objectpath::ObjectPath};
+use pile_config::objectpath::ObjectPath;
 use pile_dataset::Datasets;
 use pile_toolbox::cancelabletask::{CancelFlag, CancelableTaskError};
 use pile_value::{extract::traits::ExtractState, value::PileValue};
@@ -10,19 +10,12 @@ use crate::{CliCmd, GlobalContext};
 
 #[derive(Debug, Args)]
 pub struct ProbeCommand {
-	/// Source name (as defined in pile.toml)
-	source: String,
-
-	/// Item key within the source
-	key: String,
+	/// The file to probe
+	file: PathBuf,
 
 	/// If present, extract a specific field
 	#[arg(long, short = 'p')]
 	path: Option<String>,
-
-	/// Path to dataset config
-	#[arg(long, short = 'c', default_value = "./pile.toml")]
-	config: PathBuf,
 }
 
 impl CliCmd for ProbeCommand {
@@ -33,35 +26,37 @@ impl CliCmd for ProbeCommand {
 		_ctx: GlobalContext,
 		_flag: CancelFlag,
 	) -> Result<i32, CancelableTaskError<anyhow::Error>> {
-		let source = Label::new(&self.source)
-			.ok_or_else(|| anyhow::anyhow!("invalid source name {:?}", self.source))?;
-
-		let ds = Datasets::open(&self.config)
+		let ds = Datasets::virt(".")
 			.await
-			.with_context(|| format!("while opening dataset for {}", self.config.display()))?;
+			.with_context(|| "while opening virtual dataset".to_owned())?;
 
 		let state = ExtractState { ignore_mime: false };
+		let key = self.file.to_str().context("path is not utf-8")?;
 
 		let json = if let Some(path_str) = self.path {
 			let path: ObjectPath = path_str
 				.parse()
 				.with_context(|| format!("invalid path {path_str:?}"))?;
 
-			ds.get_field(&state, &source, &self.key, &path)
+			ds.get_field(
+				&state,
+				&Datasets::virt_source(),
+				self.file.to_str().context("path is not utf-8")?,
+				&path,
+			)
 			.await
-				.with_context(|| format!("while extracting {}", self.key))?
-				.ok_or_else(|| {
-					anyhow::anyhow!("{:?} not found in source {:?}", self.key, self.source)
-				})?
+			.with_context(|| format!("while extracting {key}"))?
+			.ok_or_else(|| anyhow::anyhow!("{key:?} not found"))?
 		} else {
-			let item = ds.get(&source, &self.key).await.ok_or_else(|| {
-				anyhow::anyhow!("{:?} not found in source {:?}", self.key, self.source)
-			})?;
+			let item = ds
+				.get(&Datasets::virt_source(), key)
+				.await
+				.ok_or_else(|| anyhow::anyhow!("{key:?} not found"))?;
 
 			let item = PileValue::Item(item);
 			item.to_json(&state)
 				.await
-				.with_context(|| format!("while extracting {}", self.key))?
+				.with_context(|| format!("while extracting {key}"))?
 		};
 
 		let json = serde_json::to_string_pretty(&json).unwrap();