fix pinning and sending

src/adapted_iter.rs

@@ -1,8 +1,10 @@
+use std::pin::Pin;
+
 use tokio_stream::Stream;
 
 use crate::adapters::AdaptInfo;
 
-pub trait AdaptedFilesIter: Stream<Item = AdaptInfo> + Send + Unpin {}
-impl<T> AdaptedFilesIter for T where T: Stream<Item = AdaptInfo> + Send + Unpin {}
+pub trait AdaptedFilesIter: Stream<Item = AdaptInfo> + Send {}
+impl<T> AdaptedFilesIter for T where T: Stream<Item = AdaptInfo> + Send {}
 
-pub type AdaptedFilesIterBox = Box<dyn AdaptedFilesIter>;
+pub type AdaptedFilesIterBox = Pin<Box<dyn AdaptedFilesIter>>;

src/adapters.rs

@@ -4,6 +4,7 @@ pub mod custom;
 // pub mod postproc;
 // pub mod pdfpages;
 pub mod spawning;
+use std::sync::Arc;
 // pub mod sqlite;
 // pub mod tar;
 // pub mod tesseract;
@@ -22,6 +23,7 @@ use std::iter::Iterator;
 use std::path::PathBuf;
 use std::pin::Pin;
 use std::rc::Rc;
+use core::fmt::Debug;
 
 pub type ReadBox = Pin<Box<dyn AsyncRead + Send>>;
 pub struct AdapterMeta {
@@ -76,7 +78,7 @@ impl AdapterMeta {
 pub trait GetMetadata {
     fn metadata(&self) -> &AdapterMeta;
 }
-pub trait FileAdapter: GetMetadata {
+pub trait FileAdapter: GetMetadata + Send + Sync{
     /// adapt a file.
     ///
     /// detection_reason is the Matcher that was used to identify this file. Unless --rga-accurate was given, it is always a FastMatcher
@@ -99,22 +101,22 @@ pub struct AdaptInfo {
     /// prefix every output line with this string to better indicate the file's location if it is in some archive
     pub line_prefix: String,
     pub postprocess: bool,
-    pub config: RgaConfig
+    pub config: RgaConfig,
 }
 
 /// (enabledAdapters, disabledAdapters)
-type AdaptersTuple = (Vec<Rc<dyn FileAdapter>>, Vec<Rc<dyn FileAdapter>>);
+type AdaptersTuple = (Vec<Arc<dyn FileAdapter>>, Vec<Arc<dyn FileAdapter>>);
 
 pub fn get_all_adapters(custom_adapters: Option<Vec<CustomAdapterConfig>>) -> AdaptersTuple {
     // order in descending priority
-    let mut adapters: Vec<Rc<dyn FileAdapter>> = vec![];
+    let mut adapters: Vec<Arc<dyn FileAdapter>> = vec![];
     if let Some(custom_adapters) = custom_adapters {
         for adapter_config in custom_adapters {
-            adapters.push(Rc::new(adapter_config.to_adapter()));
+            adapters.push(Arc::new(adapter_config.to_adapter()));
         }
     }
 
-    let internal_adapters: Vec<Rc<dyn FileAdapter>> = vec![
+    let internal_adapters: Vec<Arc<dyn FileAdapter>> = vec![
         //Rc::new(ffmpeg::FFmpegAdapter::new()),
         // Rc::new(zip::ZipAdapter::new()),
         //Rc::new(decompress::DecompressAdapter::new()),
@@ -126,7 +128,7 @@ pub fn get_all_adapters(custom_adapters: Option<Vec<CustomAdapterConfig>>) -> Ad
     adapters.extend(
         builtin_spawning_adapters
             .iter()
-            .map(|e| -> Rc<dyn FileAdapter> { Rc::new(e.to_adapter()) }),
+            .map(|e| -> Arc<dyn FileAdapter> { Arc::new(e.to_adapter()) }),
     );
     adapters.extend(internal_adapters);
 
@@ -146,7 +148,7 @@ pub fn get_all_adapters(custom_adapters: Option<Vec<CustomAdapterConfig>>) -> Ad
 pub fn get_adapters_filtered<T: AsRef<str>>(
     custom_adapters: Option<Vec<CustomAdapterConfig>>,
     adapter_names: &Vec<T>,
-) -> Result<Vec<Rc<dyn FileAdapter>>> {
+) -> Result<Vec<Arc<dyn FileAdapter>>> {
     let (def_enabled_adapters, def_disabled_adapters) = get_all_adapters(custom_adapters);
     let adapters = if !adapter_names.is_empty() {
         let adapters_map: HashMap<_, _> = def_enabled_adapters

src/adapters/spawning.rs

@@ -14,7 +14,7 @@ use tokio::io::AsyncReadExt;
 use tokio::process::{Child, Command};
 
 // TODO: don't separate the trait and the struct
-pub trait SpawningFileAdapterTrait: GetMetadata {
+pub trait SpawningFileAdapterTrait: GetMetadata + Send + Sync {
     fn get_exe(&self) -> &str;
     fn command(&self, filepath_hint: &Path, command: Command) -> Result<Command>;
 }
@@ -123,7 +123,7 @@ impl FileAdapter for SpawningFileAdapter {
             .with_context(|| format!("Could not set cmd arguments for {}", self.inner.get_exe()))?;
         debug!("executing {:?}", cmd);
         let output = pipe_output(&line_prefix, cmd, inp, self.inner.get_exe(), "")?;
-        Ok(Box::new(tokio_stream::once(AdaptInfo {
+        Ok(Box::pin(tokio_stream::once(AdaptInfo {
             filepath_hint: PathBuf::from(format!("{}.txt", filepath_hint.to_string_lossy())), // TODO: customizable
             inp: output,
             line_prefix,

src/bin/rga.rs

@@ -15,7 +15,7 @@ fn list_adapters(args: RgaConfig) -> Result<()> {
     let (enabled_adapters, disabled_adapters) = get_all_adapters(args.custom_adapters.clone());
 
     println!("Adapters:\n");
-    let print = |adapter: std::rc::Rc<dyn FileAdapter>| {
+    let print = |adapter: std::rc::Arc<dyn FileAdapter>| {
         let meta = adapter.metadata();
         let matchers = meta
             .fast_matchers

src/matching.rs

@@ -9,7 +9,7 @@ use regex::{Regex, RegexSet};
 
 use std::iter::Iterator;
 
-use std::rc::Rc;
+use std::sync::Arc;
 
 // match only based on file path
 #[derive(Clone, Debug)]
@@ -54,9 +54,9 @@ pub fn extension_to_regex(extension: &str) -> Regex {
 }
 
 pub fn adapter_matcher(
-    adapters: &Vec<Rc<dyn FileAdapter>>,
+    adapters: &Vec<Arc<dyn FileAdapter>>,
     slow: bool,
-) -> Result<impl Fn(FileMeta) -> Option<(Rc<dyn FileAdapter>, FileMatcher)>> {
+) -> Result<impl Fn(FileMeta) -> Option<(Arc<dyn FileAdapter>, FileMatcher)>> {
     // need order later
     let adapter_names: Vec<String> = adapters.iter().map(|e| e.metadata().name.clone()).collect();
     let mut fname_regexes = vec![];

src/preproc.rs

@@ -13,6 +13,7 @@ use async_compression::tokio::bufread::ZstdDecoder;
 use async_stream::stream;
 use log::*;
 use path_clean::PathClean;
+use std::sync::Arc;
 // use postproc::PostprocPrefix;
 use std::convert::TryInto;
 use std::io::Cursor;
@@ -21,16 +22,14 @@ use tokio::io::AsyncBufRead;
 use tokio::io::AsyncBufReadExt;
 use tokio::io::BufReader;
 
-use std::rc::Rc;
-
-type ActiveAdapters = Vec<Rc<dyn FileAdapter>>;
+type ActiveAdapters = Vec<Arc<dyn FileAdapter>>;
 
 async fn choose_adapter(
     config: &RgaConfig,
     filepath_hint: &Path,
     archive_recursion_depth: i32,
     inp: &mut (impl AsyncBufRead + Unpin),
-) -> Result<Option<(Rc<dyn FileAdapter>, FileMatcher, ActiveAdapters)>> {
+) -> Result<Option<(Arc<dyn FileAdapter>, FileMatcher, ActiveAdapters)>> {
     let active_adapters = get_adapters_filtered(config.custom_adapters.clone(), &config.adapters)?;
     let adapters = adapter_matcher(&active_adapters, config.accurate)?;
     let filename = filepath_hint
@@ -52,6 +51,46 @@ async fn choose_adapter(
     });
     Ok(adapter.map(|e| (e.0, e.1, active_adapters)))
 }
+
+async fn buf_choose_adapter(ai: AdaptInfo) -> Result<(AdaptInfo, Option<(Arc<dyn FileAdapter>, FileMatcher, ActiveAdapters)>)> {
+    let mut inp = BufReader::with_capacity(1 << 16, ai.inp);
+    let adapter = choose_adapter(
+        &ai.config,
+        &ai.filepath_hint,
+        ai.archive_recursion_depth,
+        &mut inp,
+    )
+    .await?;
+    let ai = AdaptInfo {
+        inp: Box::pin(inp),
+        ..ai
+    };
+    Ok((ai, adapter))
+}
+
+fn handle_no_adapter(ai: AdaptInfo) -> Result<AdaptInfo> {
+    // allow passthrough if the file is in an archive or accurate matching is enabled
+    // otherwise it should have been filtered out by rg pre-glob since rg can handle those better than us
+    let allow_cat = !ai.is_real_file || ai.config.accurate;
+    if allow_cat {
+        if ai.postprocess {
+            panic!("not implemented");
+            /*  (
+                Rc::new(PostprocPrefix {}) as Arc<dyn FileAdapter>,
+                FileMatcher::Fast(FastFileMatcher::FileExtension("default".to_string())), // todo: separate enum value for this
+            )*/
+        } else {
+            return Ok(ai);
+        }
+    } else {
+        return Err(format_err!(
+            "No adapter found for file {:?}, passthrough disabled.",
+            ai.filepath_hint
+                .file_name()
+                .ok_or_else(|| format_err!("Empty filename"))?
+        ));
+    }
+}
 /**
  * preprocess a file as defined in `ai`.
  *
@@ -67,46 +106,13 @@ pub async fn rga_preproc(ai: AdaptInfo) -> Result<ReadBox> {
 
     // todo: figure out when using a bufreader is a good idea and when it is not
     // seems to be good for File::open() reads, but not sure about within archives (tar, zip)
-    let mut inp = BufReader::with_capacity(1 << 16, ai.inp);
-    let adapter = choose_adapter(
-        &ai.config,
-        &ai.filepath_hint,
-        ai.archive_recursion_depth,
-        &mut inp,
-    )
-    .await?;
-    let (adapter, detection_reason, active_adapters) = match adapter {
-        Some((a, d, e)) => (a, d, e),
-        None => {
-            // allow passthrough if the file is in an archive or accurate matching is enabled
-            // otherwise it should have been filtered out by rg pre-glob since rg can handle those better than us
-            let allow_cat = !ai.is_real_file || ai.config.accurate;
-            if allow_cat {
-                if ai.postprocess {
-                    panic!("not implemented");
-                    /*  (
-                        Rc::new(PostprocPrefix {}) as Rc<dyn FileAdapter>,
-                        FileMatcher::Fast(FastFileMatcher::FileExtension("default".to_string())), // todo: separate enum value for this
-                    )*/
-                } else {
-                    return Ok(Box::pin(inp));
-                }
-            } else {
-                return Err(format_err!(
-                    "No adapter found for file {:?}, passthrough disabled.",
-                    ai.filepath_hint
-                        .file_name()
-                        .ok_or_else(|| format_err!("Empty filename"))?
-                ));
-            }
-        }
+    let (ai, adapter) = buf_choose_adapter(ai).await?;
+    let Some((adapter, detection_reason, active_adapters)) = adapter else {
+        return handle_no_adapter(ai).map(|ai| ai.inp);
     };
     let path_hint_copy = ai.filepath_hint.clone();
-    run_adapter_recursively(
-        AdaptInfo {
-            inp: Box::pin(inp),
-            ..ai
-        },
+    adapt_caching(
+        ai,
         adapter,
         detection_reason,
         active_adapters,
@@ -144,9 +150,10 @@ fn compute_cache_key(
         bincode::serialize(&key).context("could not serialize path")
     }
 }
-async fn run_adapter_recursively(
+
+async fn adapt_caching(
     ai: AdaptInfo,
-    adapter: Rc<dyn FileAdapter>,
+    adapter: Arc<dyn FileAdapter>,
     detection_reason: FileMatcher,
     active_adapters: ActiveAdapters,
 ) -> Result<ReadBox> {
@@ -220,11 +227,15 @@ fn loop_adapt(
 
     let s = stream! {
         for await file in inp {
-            let (adapter, detection_reason) = choose_adapter(file.config, file.filepath_hint,file.archive_recursion_depth, file.inp);
-            for file in loop_adapt(adapter, detection_reason, file) {
-                yield file;
+            let (file, chosen_adapter) = buf_choose_adapter(file).await.expect("todo: handle");
+            if let Some((adapter, detection_reason, active_adapters)) = chosen_adapter {
+                for await file in loop_adapt(adapter.as_ref(), detection_reason, file).expect("todo: handle") {
+                    yield file;
+                }
+            } else {
+                yield handle_no_adapter(file).expect("todo: handle");
             }
         }
     };
-    Ok(inp)
+    Ok(Box::pin(s))
 }