diff mbox series

[v2] fetch: show progress for packfile uri downloads

Message ID pull.907.v2.git.1618008249632.gitgitgadget@gmail.com (mailing list archive)
State New
Headers show
Series [v2] fetch: show progress for packfile uri downloads | expand

Commit Message

Albert Cui April 9, 2021, 10:44 p.m. UTC
From: Albert Cui <albertqcui@gmail.com>

Git appears to hang when downloading packfiles as this part of the
fetch is silent, causing user confusion. This change implements
progress for the number of packfiles downloaded; a progress display
for bytes would involve deeper changes at the http-fetch layer
instead of fetch-pack, the caller, so we do not do that in this
patch.

Signed-off-by: Albert Cui <albertqcui@gmail.com>
---
    fetch: show progress for packfile uri downloads
    
    Git appears to hang when downloading packfiles as this part of the fetch
    is silent, causing user confusion. This change implements progress for
    the number of packfiles downloaded; a progress display for bytes would
    involve deeper changes at the http-fetch layer instead of fetch-pack,
    the caller.

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-907%2Falbertcui%2Fprogress-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-907/albertcui/progress-v2
Pull-Request: https://github.com/gitgitgadget/git/pull/907

Range-diff vs v1:

 1:  d6cf8c195111 ! 1:  aedb1b33d0c4 fetch: show progress for packfile uri downloads
     @@ Commit message
          fetch is silent, causing user confusion. This change implements
          progress for the number of packfiles downloaded; a progress display
          for bytes would involve deeper changes at the http-fetch layer
     -    instead of fetch-pack, the caller.
     +    instead of fetch-pack, the caller, so we do not do that in this
     +    patch.
      
          Signed-off-by: Albert Cui <albertqcui@gmail.com>
      
     @@ fetch-pack.c: static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
       		const char *uri = packfile_uris.items[i].string +
       			the_hash_algo->hexsz + 1;
       
     -+		display_progress(packfile_uri_progress, i+1);
     ++		display_progress(packfile_uri_progress, i + 1);
       		strvec_push(&cmd.args, "http-fetch");
       		strvec_pushf(&cmd.args, "--packfile=%.*s",
       			     (int) the_hash_algo->hexsz,
     @@ fetch-pack.c: static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
      
       ## t/t5702-protocol-v2.sh ##
      @@ t/t5702-protocol-v2.sh: test_expect_success 'part of packfile response provided as URI' '
     - 	GIT_TRACE=1 GIT_TRACE_PACKET="$(pwd)/log" GIT_TEST_SIDEBAND_ALL=1 \
     + 	configure_exclusion "$P" my-blob >h &&
     + 	configure_exclusion "$P" other-blob >h2 &&
     + 
     +-	GIT_TRACE=1 GIT_TRACE_PACKET="$(pwd)/log" GIT_TEST_SIDEBAND_ALL=1 \
     ++	GIT_PROGRESS_DELAY=0 GIT_TRACE=1 GIT_TRACE2_EVENT=1 \
     ++	GIT_TRACE_PACKET="$(pwd)/log" GIT_TEST_SIDEBAND_ALL=1 \
       	git -c protocol.version=2 \
       		-c fetch.uriprotocols=http,https \
      -		clone "$HTTPD_URL/smart/http_parent" http_child &&


 fetch-pack.c           | 8 ++++++++
 t/t5702-protocol-v2.sh | 8 ++++++--
 2 files changed, 14 insertions(+), 2 deletions(-)


base-commit: a5828ae6b52137b913b978e16cd2334482eb4c1f

Comments

Junio C Hamano April 11, 2021, 1:30 a.m. UTC | #1
"Albert Cui via GitGitGadget" <gitgitgadget@gmail.com> writes:

> From: Albert Cui <albertqcui@gmail.com>
>
> Git appears to hang when downloading packfiles as this part of the
> fetch is silent, causing user confusion. This change implements
> progress for the number of packfiles downloaded; a progress display
> for bytes would involve deeper changes at the http-fetch layer
> instead of fetch-pack, the caller, so we do not do that in this
> patch.

... meaning, hopefully later we'd hook into transport->progress and
implement the byte-level progress display down there?  And when that
happens, we'd remove this file-level progress as it would be too
confusing to have both at the same time?

Is this start_progress() call a way to unconditionally enable the
progress display?  How does it interact with transport->progress
that is driven by transport_set_verbosity(), which in turn is called
by builtin/fetch.c and friends?  If it doesn't, shouldn't this
codepath pay attention to the transport->progress and enable the
progress meter only when it is enabled (i.e. the stderr going to a
terminal, or --progress explicitly being asked)?

> @@ -1585,6 +1586,7 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
>  	struct fetch_negotiator *negotiator;
>  	int seen_ack = 0;
>  	struct string_list packfile_uris = STRING_LIST_INIT_DUP;
> +	struct progress *packfile_uri_progress;
>  	int i;
>  	struct strvec index_pack_args = STRVEC_INIT;
>  	struct oidset gitmodules_oids = OIDSET_INIT;
> @@ -1689,6 +1691,8 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
>  		}
>  	}
>  
> +	packfile_uri_progress = start_progress(_("Downloading packs"), packfile_uris.nr);
> +
>  	for (i = 0; i < packfile_uris.nr; i++) {
>  		int j;
>  		struct child_process cmd = CHILD_PROCESS_INIT;
> @@ -1696,6 +1700,7 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
>  		const char *uri = packfile_uris.items[i].string +
>  			the_hash_algo->hexsz + 1;
>  
> +		display_progress(packfile_uri_progress, i + 1);
>  		strvec_push(&cmd.args, "http-fetch");
>  		strvec_pushf(&cmd.args, "--packfile=%.*s",
>  			     (int) the_hash_algo->hexsz,
> @@ -1739,6 +1744,9 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
>  						 get_object_directory(),
>  						 packname));
>  	}
> +
> +	stop_progress(&packfile_uri_progress);
> +
>  	string_list_clear(&packfile_uris, 0);
>  	strvec_clear(&index_pack_args);
>  
> diff --git a/t/t5702-protocol-v2.sh b/t/t5702-protocol-v2.sh
> index 2e1243ca40b0..0476b3f50455 100755
> --- a/t/t5702-protocol-v2.sh
> +++ b/t/t5702-protocol-v2.sh
> @@ -848,10 +848,12 @@ test_expect_success 'part of packfile response provided as URI' '
>  	configure_exclusion "$P" my-blob >h &&
>  	configure_exclusion "$P" other-blob >h2 &&
>  
> -	GIT_TRACE=1 GIT_TRACE_PACKET="$(pwd)/log" GIT_TEST_SIDEBAND_ALL=1 \
> +	GIT_PROGRESS_DELAY=0 GIT_TRACE=1 GIT_TRACE2_EVENT=1 \
> +	GIT_TRACE_PACKET="$(pwd)/log" GIT_TEST_SIDEBAND_ALL=1 \
>  	git -c protocol.version=2 \
>  		-c fetch.uriprotocols=http,https \
> -		clone "$HTTPD_URL/smart/http_parent" http_child &&
> +		clone "$HTTPD_URL/smart/http_parent" http_child \
> +		--progress 2>progress &&
>  
>  	# Ensure that my-blob and other-blob are in separate packfiles.
>  	for idx in http_child/.git/objects/pack/*.idx
> @@ -875,6 +877,8 @@ test_expect_success 'part of packfile response provided as URI' '
>  	test -f hfound &&
>  	test -f h2found &&
>  
> +	test_i18ngrep "Downloading packs" progress &&
> +
>  	# Ensure that there are exactly 3 packfiles with associated .idx
>  	ls http_child/.git/objects/pack/*.pack \
>  	    http_child/.git/objects/pack/*.idx >filelist &&
>
> base-commit: a5828ae6b52137b913b978e16cd2334482eb4c1f
diff mbox series

Patch

diff --git a/fetch-pack.c b/fetch-pack.c
index 6a61a464283e..7ca85f40cf23 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -23,6 +23,7 @@ 
 #include "fetch-negotiator.h"
 #include "fsck.h"
 #include "shallow.h"
+#include "progress.h"
 
 static int transfer_unpack_limit = -1;
 static int fetch_unpack_limit = -1;
@@ -1585,6 +1586,7 @@  static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
 	struct fetch_negotiator *negotiator;
 	int seen_ack = 0;
 	struct string_list packfile_uris = STRING_LIST_INIT_DUP;
+	struct progress *packfile_uri_progress;
 	int i;
 	struct strvec index_pack_args = STRVEC_INIT;
 	struct oidset gitmodules_oids = OIDSET_INIT;
@@ -1689,6 +1691,8 @@  static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
 		}
 	}
 
+	packfile_uri_progress = start_progress(_("Downloading packs"), packfile_uris.nr);
+
 	for (i = 0; i < packfile_uris.nr; i++) {
 		int j;
 		struct child_process cmd = CHILD_PROCESS_INIT;
@@ -1696,6 +1700,7 @@  static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
 		const char *uri = packfile_uris.items[i].string +
 			the_hash_algo->hexsz + 1;
 
+		display_progress(packfile_uri_progress, i + 1);
 		strvec_push(&cmd.args, "http-fetch");
 		strvec_pushf(&cmd.args, "--packfile=%.*s",
 			     (int) the_hash_algo->hexsz,
@@ -1739,6 +1744,9 @@  static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
 						 get_object_directory(),
 						 packname));
 	}
+
+	stop_progress(&packfile_uri_progress);
+
 	string_list_clear(&packfile_uris, 0);
 	strvec_clear(&index_pack_args);
 
diff --git a/t/t5702-protocol-v2.sh b/t/t5702-protocol-v2.sh
index 2e1243ca40b0..0476b3f50455 100755
--- a/t/t5702-protocol-v2.sh
+++ b/t/t5702-protocol-v2.sh
@@ -848,10 +848,12 @@  test_expect_success 'part of packfile response provided as URI' '
 	configure_exclusion "$P" my-blob >h &&
 	configure_exclusion "$P" other-blob >h2 &&
 
-	GIT_TRACE=1 GIT_TRACE_PACKET="$(pwd)/log" GIT_TEST_SIDEBAND_ALL=1 \
+	GIT_PROGRESS_DELAY=0 GIT_TRACE=1 GIT_TRACE2_EVENT=1 \
+	GIT_TRACE_PACKET="$(pwd)/log" GIT_TEST_SIDEBAND_ALL=1 \
 	git -c protocol.version=2 \
 		-c fetch.uriprotocols=http,https \
-		clone "$HTTPD_URL/smart/http_parent" http_child &&
+		clone "$HTTPD_URL/smart/http_parent" http_child \
+		--progress 2>progress &&
 
 	# Ensure that my-blob and other-blob are in separate packfiles.
 	for idx in http_child/.git/objects/pack/*.idx
@@ -875,6 +877,8 @@  test_expect_success 'part of packfile response provided as URI' '
 	test -f hfound &&
 	test -f h2found &&
 
+	test_i18ngrep "Downloading packs" progress &&
+
 	# Ensure that there are exactly 3 packfiles with associated .idx
 	ls http_child/.git/objects/pack/*.pack \
 	    http_child/.git/objects/pack/*.idx >filelist &&