sapling/cmds/statistics_collector.rs
Daniel Grzegorzewski 15d0c5a8e8 Printing statistics in csv format
Summary: Print calculated statistics in csv format, so we can generate csv file by redirecting output to some file. As a TODO we may want to add new fields to RepoStatistics struct, refactor code and create csv file using e.g. serde deserialization.

Reviewed By: krallin

Differential Revision: D17907650

fbshipit-source-id: 0e7f0af522cc72c067d59431039e44998d5dd354
2019-10-15 05:54:30 -07:00

859 lines
35 KiB
Rust

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This software may be used and distributed according to the terms of the
* GNU General Public License found in the LICENSE file in the root
* directory of this source tree.
*/
use blobrepo::BlobRepo;
use blobstore::Blobstore;
use bookmarks::BookmarkName;
use bytes::Bytes;
use changesets::{deserialize_cs_entries, ChangesetEntry};
use clap::{App, Arg, SubCommand};
use cloned::cloned;
use cmdlib::{args, monitoring};
use context::CoreContext;
use failure::err_msg;
use failure_ext::Error;
use fbinit::FacebookInit;
use futures::future;
use futures::future::{loop_fn, Loop};
use futures::future::{Future, IntoFuture};
use futures::stream;
use futures::stream::Stream;
use futures_ext::FutureExt;
use futures_ext::{BoxFuture, BoxStream};
use manifest::{Diff, Entry, ManifestOps};
use mercurial_types::{Changeset, FileBytes, HgChangesetId, HgFileNodeId, HgManifestId};
use mononoke_types::{FileType, RepositoryId};
use scuba_ext::ScubaSampleBuilder;
use slog::info;
use stats::{define_stats, Timeseries};
use std::collections::HashMap;
use std::fs;
use std::ops::{Add, Sub};
use std::path::Path;
use std::sync::Arc;
use std::time::Duration;
define_stats! {
prefix = "mononoke.statistics_collector";
calculated_changesets: timeseries(RATE, SUM),
}
const ARG_IN_FILENAME: &'static str = "in-filename";
const SUBCOMMAND_STATISTICS_FROM_FILE: &'static str = "statistics-from-commits-in-file";
const SCUBA_DATASET_NAME: &str = "mononoke_repository_statistics";
// Tool doesn't count number of lines from files with size greater than 10MB
const BIG_FILE_THRESHOLD: u64 = 10000000;
fn setup_app<'a, 'b>() -> App<'a, 'b> {
let app = args::MononokeApp {
hide_advanced_args: false,
};
let app = app
.build("Tool to calculate repo statistic")
.version("0.0.0")
.subcommand(
SubCommand::with_name(SUBCOMMAND_STATISTICS_FROM_FILE)
.about(
"calculate statistics for commits in provided file and save them to json file",
)
.arg(
Arg::with_name(ARG_IN_FILENAME)
.long(ARG_IN_FILENAME)
.takes_value(true)
.required(true)
.help("a file with a list of bonsai changesets to calculate stats for"),
),
)
.arg(
Arg::with_name("bookmark")
.long("bookmark")
.takes_value(true)
.required(false)
.help("bookmark from which we get statistics"),
)
.arg(
Arg::with_name("log-to-scuba")
.long("log-to-scuba")
.takes_value(false)
.required(false)
.help("if set then statistics are logged to scuba"),
);
args::add_fb303_args(app)
}
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
pub struct RepoStatistics {
num_files: i64,
total_file_size: i64,
num_lines: i64,
}
impl RepoStatistics {
pub fn new(num_files: i64, total_file_size: i64, num_lines: i64) -> Self {
Self {
num_files,
total_file_size,
num_lines,
}
}
}
impl Add for RepoStatistics {
type Output = RepoStatistics;
fn add(self, other: Self) -> Self {
Self {
num_files: self.num_files + other.num_files,
total_file_size: self.total_file_size + other.total_file_size,
num_lines: self.num_lines + other.num_lines,
}
}
}
impl Sub for RepoStatistics {
type Output = RepoStatistics;
fn sub(self, other: Self) -> Self {
Self {
num_files: self.num_files - other.num_files,
total_file_size: self.total_file_size - other.total_file_size,
num_lines: self.num_lines - other.num_lines,
}
}
}
pub fn number_of_lines(
bytes_stream: BoxStream<FileBytes, Error>,
) -> impl Future<Item = i64, Error = Error> {
bytes_stream
.map(|bytes| {
bytes.into_iter().fold(0, |num_lines, byte| {
if byte == '\n' as u8 {
num_lines + 1
} else {
num_lines
}
})
})
.fold(0, |result, num_lines| {
future::ok::<_, Error>(result + num_lines)
})
}
pub fn get_manifest_from_changeset(
ctx: CoreContext,
repo: BlobRepo,
changeset: HgChangesetId,
) -> impl Future<Item = HgManifestId, Error = Error> {
repo.get_changeset_by_changesetid(ctx.clone(), changeset.clone())
.map(move |changeset| changeset.manifestid())
}
pub fn get_changeset_timestamp_from_changeset(
ctx: CoreContext,
repo: BlobRepo,
hg_cs_id: HgChangesetId,
) -> impl Future<Item = i64, Error = Error> {
repo.get_changeset_by_changesetid(ctx.clone(), hg_cs_id.clone())
.map(move |changeset| changeset.time().timestamp_secs())
}
// Calculates number of lines only for regular-type file
pub fn get_statistics_from_entry(
ctx: CoreContext,
repo: BlobRepo,
entry: Entry<HgManifestId, (FileType, HgFileNodeId)>,
) -> impl Future<Item = RepoStatistics, Error = Error> {
match entry {
Entry::Leaf((file_type, filenode_id)) => repo
.get_file_size(ctx.clone(), filenode_id)
.and_then(move |size| {
if FileType::Regular == file_type && size < BIG_FILE_THRESHOLD {
number_of_lines(repo.get_file_content(ctx.clone(), filenode_id))
.join(future::ok(size))
.left_future()
} else {
future::ok((0, size)).right_future()
}
})
.map(move |(lines, size)| RepoStatistics::new(1, size as i64, lines))
.left_future(),
Entry::Tree(_) => future::ok(RepoStatistics::default()).right_future(),
}
}
pub fn get_statistics_from_changeset(
ctx: CoreContext,
repo: BlobRepo,
blobstore: impl Blobstore + Clone,
hg_cs_id: HgChangesetId,
) -> impl Future<Item = RepoStatistics, Error = Error> {
info!(
ctx.logger(),
"Started calculating statistics for changeset {}", hg_cs_id
);
get_manifest_from_changeset(ctx.clone(), repo.clone(), hg_cs_id.clone()).and_then({
cloned!(ctx, repo);
move |manifest_id| {
manifest_id
.list_leaf_entries(ctx.clone(), blobstore.clone())
.map({
cloned!(ctx);
move |(_, leaf)| {
get_statistics_from_entry(ctx.clone(), repo.clone(), Entry::Leaf(leaf))
}
})
.buffered(100)
.fold(RepoStatistics::default(), |statistics, new_stat| {
future::ok::<_, Error>(statistics + new_stat)
})
.map(move |statistics| {
info!(
ctx.logger(),
"Finished calculating statistics for changeset {}", hg_cs_id
);
statistics
})
}
})
}
pub fn update_statistics(
ctx: CoreContext,
repo: BlobRepo,
statistics: RepoStatistics,
diff: BoxStream<Diff<Entry<HgManifestId, (FileType, HgFileNodeId)>>, Error>,
) -> impl Future<Item = RepoStatistics, Error = Error> {
diff.map({
move |diff| match diff {
Diff::Added(_, entry) => {
get_statistics_from_entry(ctx.clone(), repo.clone(), entry.clone())
.map(|stat| (stat, Operation::Add))
.boxify()
}
Diff::Removed(_, entry) => {
get_statistics_from_entry(ctx.clone(), repo.clone(), entry.clone())
.map(|stat| (stat, Operation::Sub))
.boxify()
}
Diff::Changed(_, old_entry, new_entry) => {
get_statistics_from_entry(ctx.clone(), repo.clone(), old_entry.clone())
.join(get_statistics_from_entry(
ctx.clone(),
repo.clone(),
new_entry.clone(),
))
.map(|(old_stats, new_stats)| new_stats - old_stats)
.join(future::ok(Operation::Add))
.boxify()
}
}
})
.buffered(100)
.fold(
statistics,
|statistics, (file_stats, operation)| match operation {
Operation::Add => future::ok::<_, Error>(statistics + file_stats),
Operation::Sub => future::ok::<_, Error>(statistics - file_stats),
},
)
.map(move |statistics| statistics)
}
pub fn log_statistics(
ctx: CoreContext,
mut scuba_logger: ScubaSampleBuilder,
cs_timestamp: i64,
repo_name: String,
hg_cs_id: HgChangesetId,
statistics: RepoStatistics,
) {
info!(
ctx.logger(),
"Statistics for changeset {}\nCs timestamp: {}\nNumber of files {}\nTotal file size {}\nNumber of lines {}",
hg_cs_id,
cs_timestamp,
statistics.num_files,
statistics.total_file_size,
statistics.num_lines
);
scuba_logger
.add("repo_name", repo_name)
.add("num_files", statistics.num_files)
.add("total_file_size", statistics.total_file_size)
.add("num_lines", statistics.num_lines)
.add("changeset", hg_cs_id.to_hex().to_string())
.log_with_time(cs_timestamp as u64);
}
fn parse_serialized_commits<P: AsRef<Path>>(file: P) -> Result<Vec<ChangesetEntry>, Error> {
let data = fs::read(file).map_err(Error::from)?;
deserialize_cs_entries(&Bytes::from(data))
}
pub fn generate_statistics_from_file<P: AsRef<Path>>(
ctx: CoreContext,
repo: BlobRepo,
in_path: P,
) -> BoxFuture<(), Error> {
// 1 day in seconds
const REQUIRED_COMMITS_DISTANCE: i64 = 60 * 60 * 24;
let blobstore = Arc::new(repo.get_blobstore());
// TODO(dgrzegorzewski): T55705023 consider creating csv file here and save statistics using
// e.g. serde deserialize. To avoid saving fields separately it may be necessary to add new
// fields to RepoStatistics struct, like cs_timestamp, hg_cs_id, repo_id and refactor code.
println!("repo_id,hg_cs_id,cs_timestamp,num_files,total_file_size,num_lines");
parse_serialized_commits(in_path)
.into_future()
.and_then(move |changesets| {
info!(ctx.logger(), "Started calculating changesets timestamps");
stream::iter_ok(changesets.clone())
.map({
cloned!(ctx, repo);
move |cs_id| {
let repo_id = cs_id.repo_id;
repo.get_hg_from_bonsai_changeset(ctx.clone(), cs_id.cs_id)
.and_then({
cloned!(ctx, repo);
move |hg_cs_id| {
get_changeset_timestamp_from_changeset(
ctx.clone(),
repo.clone(),
hg_cs_id,
)
.map(move |cs_timestamp| (hg_cs_id, cs_timestamp, repo_id))
}
})
}
})
.buffered(100)
.collect()
.map({
cloned!(ctx);
move |mut changesets| {
info!(
ctx.logger(),
"Timestamps calculated, sorting them and starting calculating statistics"
);
changesets.sort_by_key(|(_, cs_timestamp, _)| cs_timestamp.clone());
stream::iter_ok(changesets)
}
})
.flatten_stream()
.fold(
// Mapping repo-id => (cs_creation_timestamp, hg_cs_id, statistics)
HashMap::<RepositoryId, (i64, HgChangesetId, RepoStatistics)>::new(),
move |repo_stats_map, (hg_cs_id, cs_timestamp, repo_id)| {
cloned!(ctx, repo, blobstore);
match repo_stats_map.get(&repo_id).cloned() {
Some((old_cs_timestamp, old_hg_cs_id, old_stats)) => {
// Calculate statistics for changeset only if changeset
// was created at least REQUIRED_COMMITS_DISTANCE seconds after
// changeset we used previously to calculate statistics.
if cs_timestamp - old_cs_timestamp > REQUIRED_COMMITS_DISTANCE {
info!(
ctx.logger(),
"Changeset {} with timestamp {} was created more than {} seconds after previous, calculating statistics for it",
hg_cs_id, cs_timestamp, REQUIRED_COMMITS_DISTANCE
);
get_manifest_from_changeset(
ctx.clone(),
repo.clone(),
old_hg_cs_id.clone(),
)
.join(get_manifest_from_changeset(
ctx.clone(),
repo.clone(),
hg_cs_id.clone(),
))
.and_then({
cloned!(mut repo_stats_map);
move |(old_manifest, manifest)| {
update_statistics(
ctx.clone(),
repo.clone(),
old_stats.clone(),
old_manifest.diff(
ctx.clone(),
blobstore.clone(),
manifest.clone(),
),
)
.map(move |statistics| {
info!(
ctx.logger(),
"Statistics for changeset {} calculated",
hg_cs_id
);
println!(
"{},{},{},{},{},{}",
repo_id.id(),
hg_cs_id.to_hex(),
cs_timestamp,
statistics.num_files,
statistics.total_file_size,
statistics.num_lines
);
repo_stats_map
.insert(repo_id, (cs_timestamp, hg_cs_id, statistics));
repo_stats_map
})
}
})
.boxify()
} else {
// Skip this changeset
future::ok(repo_stats_map.clone()).boxify()
}
}
None => {
info!(
ctx.logger(),
"Found first changeset for repo_id {}", repo_id.id()
);
get_statistics_from_changeset(
ctx.clone(),
repo.clone(),
blobstore.clone(),
hg_cs_id,
)
.map({
cloned!(mut repo_stats_map);
move |statistics| {
info!(
ctx.logger(),
"First changeset for repo_id {} calculated", repo_id.id()
);
println!(
"{},{},{},{},{},{}",
repo_id.id(),
hg_cs_id.to_hex().to_string(),
cs_timestamp,
statistics.num_files,
statistics.total_file_size,
statistics.num_lines
);
repo_stats_map
.insert(repo_id, (cs_timestamp, hg_cs_id, statistics));
repo_stats_map
}
})
.boxify()
}
}
},
)
.map(move |_| ())
})
.boxify()
}
enum Pass {
FirstPass(HgChangesetId),
NextPass(HgChangesetId, HgChangesetId),
}
enum Operation {
Add,
Sub,
}
#[fbinit::main]
fn main(fb: FacebookInit) -> Result<(), Error> {
let matches = setup_app().get_matches();
args::init_cachelib(fb, &matches);
let logger = args::init_logging(fb, &matches);
let ctx = CoreContext::new_with_logger(fb, logger.clone());
let bookmark = match matches.value_of("bookmark") {
Some(name) => name.to_string(),
None => String::from("master"),
};
let bookmark = BookmarkName::new(bookmark.clone())?;
let repo_name = args::get_repo_name(&matches)?;
let scuba_logger = if matches.is_present("log-to-scuba") {
ScubaSampleBuilder::new(fb, SCUBA_DATASET_NAME)
} else {
ScubaSampleBuilder::with_discard()
};
let run = args::open_repo(fb, &logger, &matches).and_then({
cloned!(matches);
move |repo| {
if let (SUBCOMMAND_STATISTICS_FROM_FILE, Some(sub_m)) = matches.subcommand() {
cloned!(ctx);
// Both arguments are set to be required
let in_filename = sub_m
.value_of(ARG_IN_FILENAME)
.expect("missing required argument");
generate_statistics_from_file(ctx.clone(), repo.clone(), in_filename)
} else {
let blobstore = Arc::new(repo.get_blobstore());
repo.get_bookmark(ctx.clone(), &bookmark)
.and_then(move |changeset| changeset.ok_or(err_msg("cannot load bookmark")))
.and_then(move |changeset| {
loop_fn::<_, (), _, _>(
(Pass::FirstPass(changeset), RepoStatistics::default()),
move |(pass, statistics)| {
cloned!(ctx, repo, blobstore, bookmark);
match pass {
Pass::FirstPass(changeset) => {
get_statistics_from_changeset(
ctx.clone(),
repo.clone(),
blobstore.clone(),
changeset.clone(),
)
.and_then({
cloned!(repo, repo_name, scuba_logger, ctx);
move |statistics| {
get_changeset_timestamp_from_changeset(
ctx.clone(),
repo,
changeset,
)
.map(move |cs_timestamp| {
log_statistics(
ctx,
scuba_logger,
cs_timestamp,
repo_name,
changeset,
statistics,
);
STATS::calculated_changesets.add_value(1);
(changeset, statistics)
})
}
})
.boxify()
}
Pass::NextPass(prev_changeset, cur_changeset) => {
if prev_changeset == cur_changeset {
let duration = Duration::from_millis(1000);
info!(
ctx.logger(),
"Changeset hasn't changed, sleeping {:?}", duration
);
tokio_timer::sleep(duration)
.from_err()
.map(move |()| (cur_changeset, statistics))
.boxify()
} else {
info!(
ctx.logger(),
"Found new changeset: {}, updating statistics",
cur_changeset
);
get_manifest_from_changeset(
ctx.clone(),
repo.clone(),
prev_changeset.clone(),
)
.join(get_manifest_from_changeset(
ctx.clone(),
repo.clone(),
cur_changeset.clone(),
))
.and_then({
cloned!(ctx, repo, repo_name, scuba_logger);
move |(prev_manifest_id, cur_manifest_id)| {
update_statistics(
ctx.clone(),
repo.clone(),
statistics.clone(),
prev_manifest_id.diff(
ctx.clone(),
blobstore.clone(),
cur_manifest_id.clone(),
),
)
.and_then({
cloned!(ctx);
info!(
ctx.logger(),
"Statistics for new changeset updated."
);
move |statistics| {
get_changeset_timestamp_from_changeset(
ctx.clone(),
repo,
cur_changeset,
)
.map(move |cs_timestamp| {
log_statistics(
ctx,
scuba_logger,
cs_timestamp,
repo_name,
cur_changeset,
statistics,
);
STATS::calculated_changesets
.add_value(1);
(cur_changeset, statistics)
})
}
})
}
})
.boxify()
}
}
}
.and_then(
move |(cur_changeset, statistics)| {
repo.get_bookmark(ctx.clone(), &bookmark)
.and_then(move |new_changeset| {
new_changeset.ok_or(err_msg("cannot load bookmark"))
})
.and_then(move |new_changeset| {
future::ok(Loop::Continue((
Pass::NextPass(cur_changeset, new_changeset),
statistics,
)))
})
},
)
},
)
})
.boxify()
}
}
});
let mut runtime = tokio::runtime::Runtime::new()?;
monitoring::start_fb303_and_stats_agg(
fb,
&mut runtime,
"statistics_collector",
&logger,
&matches,
)?;
runtime.block_on(run)?;
runtime.shutdown_on_idle();
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
use bytes::Bytes;
use fixtures::linear;
use futures::stream;
use maplit::btreemap;
use std::str::FromStr;
use tests_utils::{create_commit, store_files};
use tokio::runtime::Runtime;
#[test]
fn test_number_of_lines_empty_stream() -> Result<(), Error> {
let mut rt = Runtime::new().unwrap();
let stream: BoxStream<FileBytes, Error> =
Box::new(stream::once(Ok(FileBytes(Bytes::from(&b""[..])))));
let result = rt.block_on(number_of_lines(stream))?;
assert_eq!(result, 0);
Ok(())
}
#[test]
fn test_number_of_lines_one_line() -> Result<(), Error> {
let mut rt = Runtime::new().unwrap();
let stream: BoxStream<FileBytes, Error> = Box::new(stream::once(Ok(FileBytes(
Bytes::from(&b"First line\n"[..]),
))));
let result = rt.block_on(number_of_lines(stream))?;
assert_eq!(result, 1);
Ok(())
}
#[test]
fn test_number_of_lines_many_lines() -> Result<(), Error> {
let mut rt = Runtime::new().unwrap();
let stream: BoxStream<FileBytes, Error> = Box::new(stream::once(Ok(FileBytes(
Bytes::from(&b"First line\nSecond line\nThird line\n"[..]),
))));
let result = rt.block_on(number_of_lines(stream))?;
assert_eq!(result, 3);
Ok(())
}
#[test]
fn test_number_of_lines_many_items() -> Result<(), Error> {
let mut rt = Runtime::new().unwrap();
let vec = vec![
FileBytes(Bytes::from(&b"First line\n"[..])),
FileBytes(Bytes::from(&b""[..])),
FileBytes(Bytes::from(&b"First line\nSecond line\nThird line\n"[..])),
];
let stream: BoxStream<FileBytes, Error> = Box::new(stream::iter_ok(vec));
let result = rt.block_on(number_of_lines(stream))?;
assert_eq!(result, 4);
Ok(())
}
#[fbinit::test]
fn linear_test_get_statistics_from_changeset(fb: FacebookInit) {
let repo = linear::getrepo(fb);
let mut runtime = Runtime::new().unwrap();
let ctx = CoreContext::test_mock(fb);
let blobstore = repo.get_blobstore();
// Commit consists two files (name => content):
// "1" => "1\n"
// "files" => "1\n"
// */
let root = HgChangesetId::from_str("2d7d4ba9ce0a6ffd222de7785b249ead9c51c536").unwrap();
let p = repo.get_bonsai_from_hg(ctx.clone(), root);
let p = runtime.block_on(p).unwrap().unwrap();
let parents = vec![p];
let bcs_id = create_commit(
ctx.clone(),
repo.clone(),
parents,
store_files(
ctx.clone(),
btreemap! {
"dir1/dir2/file1" => Some("first line\nsecond line\n"),
"dir1/dir3/file2" => Some("first line\n"),
},
repo.clone(),
),
);
let hg_cs_id = repo.get_hg_from_bonsai_changeset(ctx.clone(), bcs_id);
let hg_cs_id = runtime.block_on(hg_cs_id).unwrap();
let stats = get_statistics_from_changeset(
ctx.clone(),
repo.clone(),
blobstore.clone(),
hg_cs_id.clone(),
);
let stats = runtime.block_on(stats).unwrap();
// (num_files, total_file_size, num_lines)
assert_eq!(stats, RepoStatistics::new(4, 38, 5));
}
#[fbinit::test]
fn linear_test_get_statistics_from_entry_tree(fb: FacebookInit) {
let repo = linear::getrepo(fb);
let mut runtime = Runtime::new().unwrap();
let ctx = CoreContext::test_mock(fb);
let blobstore = repo.get_blobstore();
// Commit consists two files (name => content):
// "1" => "1\n"
// "files" => "1\n"
// */
let root = HgChangesetId::from_str("2d7d4ba9ce0a6ffd222de7785b249ead9c51c536").unwrap();
let p = repo.get_bonsai_from_hg(ctx.clone(), root);
let p = runtime.block_on(p).unwrap().unwrap();
let parents = vec![p];
let bcs_id = create_commit(
ctx.clone(),
repo.clone(),
parents,
store_files(
ctx.clone(),
btreemap! {
"dir1/dir2/file1" => Some("first line\nsecond line\n"),
"dir1/dir3/file2" => Some("first line\n"),
},
repo.clone(),
),
);
let hg_cs_id = repo.get_hg_from_bonsai_changeset(ctx.clone(), bcs_id);
let hg_cs_id = runtime.block_on(hg_cs_id).unwrap();
let tree_entries = get_manifest_from_changeset(ctx.clone(), repo.clone(), hg_cs_id.clone())
.and_then({
cloned!(ctx);
move |manifest| {
manifest
.list_all_entries(ctx.clone(), blobstore.clone())
.filter_map(|(_, entry)| match entry {
Entry::Tree(_) => Some(entry),
_ => None,
})
.collect()
}
});
let mut tree_entries = runtime.block_on(tree_entries).unwrap();
let stats =
get_statistics_from_entry(ctx.clone(), repo.clone(), tree_entries.pop().unwrap());
let stats = runtime.block_on(stats).unwrap();
// For Entry::Tree we expect repository with all statistics equal 0
// (num_files, total_file_size, num_lines)
assert_eq!(stats, RepoStatistics::default());
}
#[fbinit::test]
fn linear_test_update_statistics(fb: FacebookInit) {
let repo = linear::getrepo(fb);
let mut runtime = Runtime::new().unwrap();
let ctx = CoreContext::test_mock(fb);
let blobstore = repo.get_blobstore();
/*
Commit consists two files (name => content):
"1" => "1\n"
"files" => "1\n"
*/
let prev_hg_cs_id =
HgChangesetId::from_str("2d7d4ba9ce0a6ffd222de7785b249ead9c51c536").unwrap();
/*
Commit consists two files (name => content):
"2" => "2\n"
"files" => "1\n2\n"
*/
let cur_hg_cs_id =
HgChangesetId::from_str("3e0e761030db6e479a7fb58b12881883f9f8c63f").unwrap();
let stats = get_statistics_from_changeset(
ctx.clone(),
repo.clone(),
blobstore.clone(),
prev_hg_cs_id.clone(),
);
let stats = runtime.block_on(stats).unwrap();
let manifests =
get_manifest_from_changeset(ctx.clone(), repo.clone(), prev_hg_cs_id.clone()).join(
get_manifest_from_changeset(ctx.clone(), repo.clone(), cur_hg_cs_id.clone()),
);
let (prev_manifest, cur_manifest) = runtime.block_on(manifests).unwrap();
let new_stats = update_statistics(
ctx.clone(),
repo.clone(),
stats.clone(),
prev_manifest.diff(ctx.clone(), blobstore.clone(), cur_manifest.clone()),
);
let new_stats = runtime.block_on(new_stats).unwrap();
// (num_files, total_file_size, num_lines)
assert_eq!(new_stats, RepoStatistics::new(3, 8, 4));
}
}