Sebastian Thielmake fmt511ed003 years agoHistory
218 lines · 6.3 KB · Rust
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use std::io; use anyhow::bail;use git_repository as git; use crate::OutputFormat; #[cfg_attr(not(feature = "serde1"), allow(unused_variables))]pub fn info(    repo: git::Repository,    format: OutputFormat,    out: impl io::Write,    mut err: impl io::Write,) -> anyhow::Result<()> {    if format == OutputFormat::Human {        writeln!(err, "Only JSON is implemented - using that instead")?;    }     #[cfg_attr(feature = "serde1", derive(serde::Serialize))]    pub struct Statistics {        pub path: std::path::PathBuf,        pub object_hash: String,        pub use_multi_pack_index: bool,        pub structure: Vec<git::odb::store::structure::Record>,        pub metrics: git::odb::store::Metrics,    }     let store = repo.objects.store_ref();    let stats = Statistics {        path: store.path().into(),        object_hash: store.object_hash().to_string(),        use_multi_pack_index: store.use_multi_pack_index(),        structure: store.structure()?,        metrics: store.metrics(),    };     #[cfg(feature = "serde1")]    {        serde_json::to_writer_pretty(out, &stats)?;    }     Ok(())} pub mod statistics {    use crate::OutputFormat;     pub const PROGRESS_RANGE: std::ops::RangeInclusive<u8> = 0..=3;     #[derive(Debug, Copy, Clone)]    pub struct Options {        pub format: OutputFormat,        pub thread_limit: Option<usize>,    }} #[cfg_attr(not(feature = "serde1"), allow(unused_variables))]pub fn statistics(    repo: git::Repository,    mut progress: impl git::Progress,    out: impl io::Write,    mut err: impl io::Write,    statistics::Options { format, thread_limit }: statistics::Options,) -> anyhow::Result<()> {    use bytesize::ByteSize;    use git::odb::{find, HeaderExt};     if format == OutputFormat::Human {        writeln!(err, "Only JSON is implemented - using that instead")?;    }     progress.init(None, git::progress::count("objects"));    progress.set_name("counting");    let counter = progress.counter();    let start = std::time::Instant::now();     #[cfg_attr(feature = "serde1", derive(serde::Serialize))]    #[derive(Default)]    struct Statistics {        total_objects: usize,        loose_objects: usize,        packed_objects: usize,        packed_delta_objects: usize,        total_delta_chain_length: u64,        trees: usize,        trees_size: ByteSize,        tags: usize,        tags_size: ByteSize,        commits: usize,        commits_size: ByteSize,        blobs: usize,        blobs_size: ByteSize,    }     impl Statistics {        fn count(&mut self, kind: git::object::Kind, size: u64) {            use git::object::Kind::*;            match kind {                Commit => {                    self.commits += 1;                    self.commits_size += size;                }                Tree => {                    self.trees += 1;                    self.trees_size += size;                }                Tag => {                    self.tags += 1;                    self.tags_size += size;                }                Blob => {                    self.blobs += 1;                    self.blobs_size += size;                }            }        }        fn consume(&mut self, item: git::odb::find::Header) {            match item {                find::Header::Loose { size, kind } => {                    self.loose_objects += 1;                    self.count(kind, size)                }                find::Header::Packed(packed) => {                    self.packed_objects += 1;                    self.packed_delta_objects += usize::from(packed.num_deltas > 0);                    self.total_delta_chain_length += packed.num_deltas as u64;                    self.count(packed.kind, packed.object_size);                }            }        }    }     #[derive(Default)]    struct Reduce {        stats: Statistics,    }     impl git::parallel::Reduce for Reduce {        type Input = Result<Vec<git::odb::find::Header>, anyhow::Error>;        type FeedProduce = ();        type Output = Statistics;        type Error = anyhow::Error;         fn feed(&mut self, items: Self::Input) -> Result<Self::FeedProduce, Self::Error> {            for item in items? {                self.stats.consume(item);            }            Ok(())        }         fn finalize(mut self) -> Result<Self::Output, Self::Error> {            self.stats.total_objects = self.stats.loose_objects + self.stats.packed_objects;            Ok(self.stats)        }    }     let cancelled = || anyhow::anyhow!("Cancelled by user");    let object_ids = repo.objects.store_ref().iter()?.filter_map(Result::ok);    let chunk_size = 1_000;    let stats = if git::parallel::num_threads(thread_limit) > 1 {        git::parallel::in_parallel(            git::interrupt::Iter::new(                git::features::iter::Chunks {                    inner: object_ids,                    size: chunk_size,                },                cancelled,            ),            thread_limit,            move |_| (repo.objects.clone().into_inner(), counter.clone()),            |ids, (handle, counter)| {                let ids = ids?;                if let Some(counter) = counter {                    counter.fetch_add(ids.len(), std::sync::atomic::Ordering::SeqCst);                }                let out = ids                    .into_iter()                    .map(|id| handle.header(id))                    .collect::<Result<Vec<_>, _>>()?;                Ok(out)            },            Reduce::default(),        )?    } else {        let mut stats = Statistics::default();         for (count, id) in object_ids.enumerate() {            if count % chunk_size == 0 && git::interrupt::is_triggered() {                return Err(cancelled());            }            stats.consume(repo.objects.header(id)?);            progress.inc();        }        stats    };     progress.show_throughput(start);     #[cfg(feature = "serde1")]    {        serde_json::to_writer_pretty(out, &stats)?;    }     Ok(())} pub fn entries(repo: git::Repository, format: OutputFormat, mut out: impl io::Write) -> anyhow::Result<()> {    if format != OutputFormat::Human {        bail!("Only human output format is supported at the moment");    }     for object in repo.objects.iter()? {        let object = object?;        writeln!(out, "{}", object)?;    }     Ok(())}