[PATCH] Packfile-uris support excluding commit objects

[PATCH] Packfile-uris support excluding commit objects

[Teng Long]

On the server, more sophisticated means of excluding objects should be
supported, such as commit object. This commit introduces a new
configuration `uploadpack.commitpackfileuri` for this.

This patch only pack the commit object, not including the that commit
and all objects that it references. This work will be done in a further
patch recently.

Similarly, there are related documents that will be included in
subsequent patches.

Signed-off-by: Teng Long <dyroneteng@gmail.com>
---
 builtin/pack-objects.c |  8 ++---
 fetch-pack.c           |  8 +++++
 t/t5702-protocol-v2.sh | 71 +++++++++++++++++++++++++++++++++---------
 upload-pack.c          |  7 +++--
 4 files changed, 73 insertions(+), 21 deletions(-)

diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 6d13cd3e1a..2f1817fe28 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -2985,7 +2985,7 @@ static int git_pack_config(const char *k, const char *v, void *cb)
 			pack_idx_opts.flags &= ~WRITE_REV;
 		return 0;
 	}
-	if (!strcmp(k, "uploadpack.blobpackfileuri")) {
+    if (!strcmp(k, "uploadpack.blobpackfileuri") || !strcmp(k, "uploadpack.commitpackfileuri")) {
 		struct configured_exclusion *ex = xmalloc(sizeof(*ex));
 		const char *oid_end, *pack_end;
 		/*
@@ -2998,11 +2998,11 @@ static int git_pack_config(const char *k, const char *v, void *cb)
 		    *oid_end != ' ' ||
 		    parse_oid_hex(oid_end + 1, &pack_hash, &pack_end) ||
 		    *pack_end != ' ')
-			die(_("value of uploadpack.blobpackfileuri must be "
-			      "of the form '<object-hash> <pack-hash> <uri>' (got '%s')"), v);
+            die(_("value of uploadpack.blobpackfileuri or upload.commitpackfileuri must be "
+                  "of the form '<object-hash> <pack-hash> <uri>' (got '%s')"), v);
 		if (oidmap_get(&configured_exclusions, &ex->e.oid))
 			die(_("object already configured in another "
-			      "uploadpack.blobpackfileuri (got '%s')"), v);
+			      "uploadpack.blobpackfileuri or uploadpack.commitpackfileuri (got '%s')"), v);
 		ex->pack_hash_hex = xcalloc(1, pack_end - oid_end);
 		memcpy(ex->pack_hash_hex, oid_end + 1, pack_end - oid_end - 1);
 		ex->uri = xstrdup(pack_end + 1);
diff --git a/fetch-pack.c b/fetch-pack.c
index 2318ebe680..24a947835b 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -23,6 +23,7 @@
 #include "fetch-negotiator.h"
 #include "fsck.h"
 #include "shallow.h"
+#include "strmap.h"
 
 static int transfer_unpack_limit = -1;
 static int fetch_unpack_limit = -1;
@@ -1677,6 +1678,8 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
 		}
 	}
 
+	struct strset uris;
+	strset_init(&uris);
 	for (i = 0; i < packfile_uris.nr; i++) {
 		int j;
 		struct child_process cmd = CHILD_PROCESS_INIT;
@@ -1684,6 +1687,11 @@ 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;
 
+        if (strset_contains(&uris, uri)) {
+            continue;
+        }
+
+        strset_add(&uris, uri);
 		strvec_push(&cmd.args, "http-fetch");
 		strvec_pushf(&cmd.args, "--packfile=%.*s",
 			     (int) the_hash_algo->hexsz,
diff --git a/t/t5702-protocol-v2.sh b/t/t5702-protocol-v2.sh
index 2e1243ca40..d444177fb5 100755
--- a/t/t5702-protocol-v2.sh
+++ b/t/t5702-protocol-v2.sh
@@ -824,12 +824,22 @@ test_expect_success 'when server does not send "ready", expect FLUSH' '
 '
 
 configure_exclusion () {
-	git -C "$1" hash-object "$2" >objh &&
-	git -C "$1" pack-objects "$HTTPD_DOCUMENT_ROOT_PATH/mypack" <objh >packh &&
-	git -C "$1" config --add \
-		"uploadpack.blobpackfileuri" \
-		"$(cat objh) $(cat packh) $HTTPD_URL/dumb/mypack-$(cat packh).pack" &&
-	cat objh
+    if test "$1" = "blob"
+        then
+            git -C "$2" hash-object "$3" >objh &&
+            git -C "$2" pack-objects "$HTTPD_DOCUMENT_ROOT_PATH/mypack" <objh >packh &&
+            git -C "$2" config --add \
+            		"uploadpack.blobpackfileuri" \
+            		"$(cat objh) $(cat packh) $HTTPD_URL/dumb/mypack-$(cat packh).pack" &&
+            cat objh
+        else
+            echo "$3" > objh &&
+            git -C "$2" pack-objects "$HTTPD_DOCUMENT_ROOT_PATH/mypack" <objh >packh &&
+            git -C "$2" config --add \
+            		"uploadpack.commitpackfileuri" \
+            		"$(cat objh) $(cat packh) $HTTPD_URL/dumb/mypack-$(cat packh).pack" &&
+            cat objh
+    fi
 }
 
 test_expect_success 'part of packfile response provided as URI' '
@@ -845,8 +855,8 @@ test_expect_success 'part of packfile response provided as URI' '
 	git -C "$P" add other-blob &&
 	git -C "$P" commit -m x &&
 
-	configure_exclusion "$P" my-blob >h &&
-	configure_exclusion "$P" other-blob >h2 &&
+	configure_exclusion blob "$P" my-blob >h &&
+	configure_exclusion blob "$P" other-blob >h2 &&
 
 	GIT_TRACE=1 GIT_TRACE_PACKET="$(pwd)/log" GIT_TEST_SIDEBAND_ALL=1 \
 	git -c protocol.version=2 \
@@ -881,7 +891,7 @@ test_expect_success 'part of packfile response provided as URI' '
 	test_line_count = 6 filelist
 '
 
-test_expect_success 'packfile URIs with fetch instead of clone' '
+test_expect_success 'blobs packfile URIs with fetch instead of clone' '
 	P="$HTTPD_DOCUMENT_ROOT_PATH/http_parent" &&
 	rm -rf "$P" http_child log &&
 
@@ -892,7 +902,7 @@ test_expect_success 'packfile URIs with fetch instead of clone' '
 	git -C "$P" add my-blob &&
 	git -C "$P" commit -m x &&
 
-	configure_exclusion "$P" my-blob >h &&
+	configure_exclusion blob "$P" my-blob >h &&
 
 	git init http_child &&
 
@@ -902,6 +912,37 @@ test_expect_success 'packfile URIs with fetch instead of clone' '
 		fetch "$HTTPD_URL/smart/http_parent"
 '
 
+test_expect_success 'commits packfile URIs with fetch instead of clone' '
+	P="$HTTPD_DOCUMENT_ROOT_PATH/http_parent" &&
+	rm -rf "$P" http_child log &&
+
+	git init "$P" &&
+	git -C "$P" config "uploadpack.allowsidebandall" "true" &&
+
+	echo my-blob >"$P/my-blob" &&
+	git -C "$P" add my-blob &&
+	git -C "$P" commit -m x &&
+
+
+	mycommit=$(git -C "$P" rev-parse HEAD) &&
+    echo other-blob >"$P/other-blob" &&
+    git -C "$P" add other-blob &&
+    git -C "$P" commit -m x &&
+	othercommit=$(git -C "$P" rev-parse HEAD) &&
+	configure_exclusion commit "$P" "$mycommit" >h &&
+	configure_exclusion commit "$P" "$othercommit" >h2 &&
+
+	git init http_child &&
+
+	GIT_TRACE=1 GIT_TEST_SIDEBAND_ALL=1 \
+	git -C http_child -c protocol.version=2 \
+		-c fetch.uriprotocols=http,https \
+		fetch "$HTTPD_URL/smart/http_parent" &&
+	ls http_child/.git/objects/pack/*.pack \
+    	    http_child/.git/objects/pack/*.idx >filelist &&
+    	test_line_count = 6 filelist
+'
+
 test_expect_success 'fetching with valid packfile URI but invalid hash fails' '
 	P="$HTTPD_DOCUMENT_ROOT_PATH/http_parent" &&
 	rm -rf "$P" http_child log &&
@@ -915,7 +956,7 @@ test_expect_success 'fetching with valid packfile URI but invalid hash fails' '
 	git -C "$P" add other-blob &&
 	git -C "$P" commit -m x &&
 
-	configure_exclusion "$P" my-blob >h &&
+	configure_exclusion blob "$P" my-blob >h &&
 	# Configure a URL for other-blob. Just reuse the hash of the object as
 	# the hash of the packfile, since the hash does not matter for this
 	# test as long as it is not the hash of the pack, and it is of the
@@ -944,7 +985,7 @@ test_expect_success 'packfile-uri with transfer.fsckobjects' '
 	git -C "$P" add my-blob &&
 	git -C "$P" commit -m x &&
 
-	configure_exclusion "$P" my-blob >h &&
+	configure_exclusion blob "$P" my-blob >h &&
 
 	sane_unset GIT_TEST_SIDEBAND_ALL &&
 	git -c protocol.version=2 -c transfer.fsckobjects=1 \
@@ -978,7 +1019,7 @@ test_expect_success 'packfile-uri with transfer.fsckobjects fails on bad object'
 	git -C "$P" add my-blob &&
 	git -C "$P" commit -m x &&
 
-	configure_exclusion "$P" my-blob >h &&
+	configure_exclusion blob "$P" my-blob >h &&
 
 	sane_unset GIT_TEST_SIDEBAND_ALL &&
 	test_must_fail git -c protocol.version=2 -c transfer.fsckobjects=1 \
@@ -1000,7 +1041,7 @@ test_expect_success 'packfile-uri with transfer.fsckobjects succeeds when .gitmo
 	git -C "$P" add .gitmodules &&
 	git -C "$P" commit -m x &&
 
-	configure_exclusion "$P" .gitmodules >h &&
+	configure_exclusion blob "$P" .gitmodules >h &&
 
 	sane_unset GIT_TEST_SIDEBAND_ALL &&
 	git -c protocol.version=2 -c transfer.fsckobjects=1 \
@@ -1026,7 +1067,7 @@ test_expect_success 'packfile-uri with transfer.fsckobjects fails when .gitmodul
 	git -C "$P" add .gitmodules &&
 	git -C "$P" commit -m x &&
 
-	configure_exclusion "$P" .gitmodules >h &&
+	configure_exclusion blob "$P" .gitmodules >h &&
 
 	sane_unset GIT_TEST_SIDEBAND_ALL &&
 	test_must_fail git -c protocol.version=2 -c transfer.fsckobjects=1 \
diff --git a/upload-pack.c b/upload-pack.c
index 5c1cd19612..34f8bb81a8 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -1744,9 +1744,12 @@ int upload_pack_advertise(struct repository *r,
 		     allow_sideband_all_value))
 			strbuf_addstr(value, " sideband-all");
 
-		if (!repo_config_get_string(the_repository,
+		if ((!repo_config_get_string(the_repository,
 					    "uploadpack.blobpackfileuri",
-					    &str) &&
+					    &str) ||
+            !repo_config_get_string(the_repository,
+                        "uploadpack.commitpackfileuri",
+                        &str)) &&
 		    str) {
 			strbuf_addstr(value, " packfile-uris");
 			free(str);
-- 
2.31.1.442.g7e39198978.dirty

Re: [PATCH] Packfile-uris support excluding commit objects

[Ævar Arnfjörð Bjarmason]

On Fri, May 07 2021, Teng Long wrote:

It seems like this and your
http://lore.kernel.org/git/20210506073354.27833-1-dyroneteng@gmail.com
should be part of one series, not split up.

> On the server, more sophisticated means of excluding objects should be
> supported, such as commit object. This commit introduces a new
> configuration `uploadpack.commitpackfileuri` for this.

Per my understanding in
https://lore.kernel.org/git/87o8hk820f.fsf@evledraar.gmail.com/ this +
Jonathan's earlier bfc2a36ff2a (Doc: clarify contents of packfile sent
as URI, 2021-01-20) still makes this whole thing more confusing that it
needs to be.

I think we should just have a new uploadpack.excludeObject, and document
that uploadpack.blobpackfileuri is an (unfortunately named) synonym for
it. I.e. the actual implementation doesn't care about the objec type it
just excludes any object listed via an oidmap. No?

As for some comments on the implementation:

> This patch only pack the commit object, not including the that commit
> and all objects that it references. This work will be done in a further
> patch recently.

I realize you're probably not a native English speaker (neither am I),
but I honestly can't understand that "This work will be done in a
further patch recently.". Do you mean something like:

    This change does not add support for recursively excluding things
    referenced by container objects such as "commit", "tag", and
    "tree". We'll still just dumbly exclude that specific object (this
    was originally meant for specific "blobs"). Smartly excluding things
    recursively might be implemented by a future change.

> Similarly, there are related documents that will be included in
> subsequent patches.

Please send the earlier doc cleanup + the spec change for this + any doc
updates as one series.

Narrow comments on the patch:

> Signed-off-by: Teng Long <dyroneteng@gmail.com>
> ---
>  builtin/pack-objects.c |  8 ++---
>  fetch-pack.c           |  8 +++++
>  t/t5702-protocol-v2.sh | 71 +++++++++++++++++++++++++++++++++---------
>  upload-pack.c          |  7 +++--
>  4 files changed, 73 insertions(+), 21 deletions(-)
>
> diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
> index 6d13cd3e1a..2f1817fe28 100644
> --- a/builtin/pack-objects.c
> +++ b/builtin/pack-objects.c
> @@ -2985,7 +2985,7 @@ static int git_pack_config(const char *k, const char *v, void *cb)
>  			pack_idx_opts.flags &= ~WRITE_REV;
>  		return 0;
>  	}
> -	if (!strcmp(k, "uploadpack.blobpackfileuri")) {
> +    if (!strcmp(k, "uploadpack.blobpackfileuri") || !strcmp(k, "uploadpack.commitpackfileuri")) {


Nit: Split this across two lines.

>  		struct configured_exclusion *ex = xmalloc(sizeof(*ex));
>  		const char *oid_end, *pack_end;
>  		/*
> @@ -2998,11 +2998,11 @@ static int git_pack_config(const char *k, const char *v, void *cb)
>  		    *oid_end != ' ' ||
>  		    parse_oid_hex(oid_end + 1, &pack_hash, &pack_end) ||
>  		    *pack_end != ' ')
> -			die(_("value of uploadpack.blobpackfileuri must be "
> -			      "of the form '<object-hash> <pack-hash> <uri>' (got '%s')"), v);
> +            die(_("value of uploadpack.blobpackfileuri or upload.commitpackfileuri must be "
> +                  "of the form '<object-hash> <pack-hash> <uri>' (got '%s')"), v);

Indending with spaces.

>  		if (oidmap_get(&configured_exclusions, &ex->e.oid))
>  			die(_("object already configured in another "
> -			      "uploadpack.blobpackfileuri (got '%s')"), v);
> +			      "uploadpack.blobpackfileuri or uploadpack.commitpackfileuri (got '%s')"), v);

I think by having a uploadpack.excludeObject documented as the primary
interface to this we could just say "object already listed by an earlier
exclusion" or something like that.

>  		ex->pack_hash_hex = xcalloc(1, pack_end - oid_end);
>  		memcpy(ex->pack_hash_hex, oid_end + 1, pack_end - oid_end - 1);
>  		ex->uri = xstrdup(pack_end + 1);
> diff --git a/fetch-pack.c b/fetch-pack.c
> index 2318ebe680..24a947835b 100644
> --- a/fetch-pack.c
> +++ b/fetch-pack.c
> @@ -23,6 +23,7 @@
>  #include "fetch-negotiator.h"
>  #include "fsck.h"
>  #include "shallow.h"
> +#include "strmap.h"
>  
>  static int transfer_unpack_limit = -1;
>  static int fetch_unpack_limit = -1;
> @@ -1677,6 +1678,8 @@ static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
>  		}
>  	}
>  
> +	struct strset uris;
> +	strset_init(&uris);
>  	for (i = 0; i < packfile_uris.nr; i++) {
>  		int j;
>  		struct child_process cmd = CHILD_PROCESS_INIT;
> @@ -1684,6 +1687,11 @@ 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;
>  
> +        if (strset_contains(&uris, uri)) {
> +            continue;
> +        }


More indenting with spaces, also don't need the {} here.

> +
> +        strset_add(&uris, uri);
>  		strvec_push(&cmd.args, "http-fetch");
>  		strvec_pushf(&cmd.args, "--packfile=%.*s",
>  			     (int) the_hash_algo->hexsz,
> diff --git a/t/t5702-protocol-v2.sh b/t/t5702-protocol-v2.sh
> index 2e1243ca40..d444177fb5 100755
> --- a/t/t5702-protocol-v2.sh
> +++ b/t/t5702-protocol-v2.sh
> @@ -824,12 +824,22 @@ test_expect_success 'when server does not send "ready", expect FLUSH' '
>  '
>  
>  configure_exclusion () {
> -	git -C "$1" hash-object "$2" >objh &&
> -	git -C "$1" pack-objects "$HTTPD_DOCUMENT_ROOT_PATH/mypack" <objh >packh &&
> -	git -C "$1" config --add \
> -		"uploadpack.blobpackfileuri" \
> -		"$(cat objh) $(cat packh) $HTTPD_URL/dumb/mypack-$(cat packh).pack" &&
> -	cat objh
> +    if test "$1" = "blob"
> +        then

Don't indent the "then", also spaces...

> +            git -C "$2" hash-object "$3" >objh &&
> +            git -C "$2" pack-objects "$HTTPD_DOCUMENT_ROOT_PATH/mypack" <objh >packh &&
> +            git -C "$2" config --add \
> +            		"uploadpack.blobpackfileuri" \
> +            		"$(cat objh) $(cat packh) $HTTPD_URL/dumb/mypack-$(cat packh).pack" &&
> +            cat objh
> +        else
> +            echo "$3" > objh &&

Use ">objh" not "> objh".

> +            git -C "$2" pack-objects "$HTTPD_DOCUMENT_ROOT_PATH/mypack" <objh >packh &&
> +            git -C "$2" config --add \
> +            		"uploadpack.commitpackfileuri" \
> +            		"$(cat objh) $(cat packh) $HTTPD_URL/dumb/mypack-$(cat packh).pack" &&
> +            cat objh


This whole if/else seems like it could be better split up by discovering
the variable first, using that as a variable, and then avoiding the
duplication. But if we just used uploadpack.excludeObject...

> +    fi
>  }
>  
>  test_expect_success 'part of packfile response provided as URI' '
> @@ -845,8 +855,8 @@ test_expect_success 'part of packfile response provided as URI' '
>  	git -C "$P" add other-blob &&
>  	git -C "$P" commit -m x &&
>  
> -	configure_exclusion "$P" my-blob >h &&
> -	configure_exclusion "$P" other-blob >h2 &&
> +	configure_exclusion blob "$P" my-blob >h &&
> +	configure_exclusion blob "$P" other-blob >h2 &&
>  
>  	GIT_TRACE=1 GIT_TRACE_PACKET="$(pwd)/log" GIT_TEST_SIDEBAND_ALL=1 \
>  	git -c protocol.version=2 \
> @@ -881,7 +891,7 @@ test_expect_success 'part of packfile response provided as URI' '
>  	test_line_count = 6 filelist
>  '
>  
> -test_expect_success 'packfile URIs with fetch instead of clone' '
> +test_expect_success 'blobs packfile URIs with fetch instead of clone' '
>  	P="$HTTPD_DOCUMENT_ROOT_PATH/http_parent" &&
>  	rm -rf "$P" http_child log &&
>  
> @@ -892,7 +902,7 @@ test_expect_success 'packfile URIs with fetch instead of clone' '
>  	git -C "$P" add my-blob &&
>  	git -C "$P" commit -m x &&
>  
> -	configure_exclusion "$P" my-blob >h &&
> +	configure_exclusion blob "$P" my-blob >h &&
>  
>  	git init http_child &&
>  
> @@ -902,6 +912,37 @@ test_expect_success 'packfile URIs with fetch instead of clone' '
>  		fetch "$HTTPD_URL/smart/http_parent"
>  '
>  
> +test_expect_success 'commits packfile URIs with fetch instead of clone' '
> +	P="$HTTPD_DOCUMENT_ROOT_PATH/http_parent" &&
> +	rm -rf "$P" http_child log &&

Put stuff like this in "test_when_finished"

> +
> +	git init "$P" &&
> +	git -C "$P" config "uploadpack.allowsidebandall" "true" &&
> +
> +	echo my-blob >"$P/my-blob" &&
> +	git -C "$P" add my-blob &&
> +	git -C "$P" commit -m x &&

You can just use test_commit here, no?

> +
> +
> +	mycommit=$(git -C "$P" rev-parse HEAD) &&
> +    echo other-blob >"$P/other-blob" &&
> +    git -C "$P" add other-blob &&
> +    git -C "$P" commit -m x &&

ditto test_commit.

> +	othercommit=$(git -C "$P" rev-parse HEAD) &&
> +	configure_exclusion commit "$P" "$mycommit" >h &&
> +	configure_exclusion commit "$P" "$othercommit" >h2 &&

Personally I'd just skip this whole "rev-parse HEAD" etc. and just pass
the tag name(s) created by earlier test_commit, then have
configure_exclusion ust always do a rev-parse...

> +
> +	git init http_child &&
> +
> +	GIT_TRACE=1 GIT_TEST_SIDEBAND_ALL=1 \
> +	git -C http_child -c protocol.version=2 \
> +		-c fetch.uriprotocols=http,https \
> +		fetch "$HTTPD_URL/smart/http_parent" &&
> +	ls http_child/.git/objects/pack/*.pack \
> +    	    http_child/.git/objects/pack/*.idx >filelist &&
> +    	test_line_count = 6 filelist
> +'
> +
>  test_expect_success 'fetching with valid packfile URI but invalid hash fails' '
>  	P="$HTTPD_DOCUMENT_ROOT_PATH/http_parent" &&
>  	rm -rf "$P" http_child log &&
> @@ -915,7 +956,7 @@ test_expect_success 'fetching with valid packfile URI but invalid hash fails' '
>  	git -C "$P" add other-blob &&
>  	git -C "$P" commit -m x &&
>  
> -	configure_exclusion "$P" my-blob >h &&
> +	configure_exclusion blob "$P" my-blob >h &&
>  	# Configure a URL for other-blob. Just reuse the hash of the object as
>  	# the hash of the packfile, since the hash does not matter for this
>  	# test as long as it is not the hash of the pack, and it is of the
> @@ -944,7 +985,7 @@ test_expect_success 'packfile-uri with transfer.fsckobjects' '
>  	git -C "$P" add my-blob &&
>  	git -C "$P" commit -m x &&
>  
> -	configure_exclusion "$P" my-blob >h &&
> +	configure_exclusion blob "$P" my-blob >h &&
>  
>  	sane_unset GIT_TEST_SIDEBAND_ALL &&
>  	git -c protocol.version=2 -c transfer.fsckobjects=1 \
> @@ -978,7 +1019,7 @@ test_expect_success 'packfile-uri with transfer.fsckobjects fails on bad object'
>  	git -C "$P" add my-blob &&
>  	git -C "$P" commit -m x &&
>  
> -	configure_exclusion "$P" my-blob >h &&
> +	configure_exclusion blob "$P" my-blob >h &&
>  
>  	sane_unset GIT_TEST_SIDEBAND_ALL &&
>  	test_must_fail git -c protocol.version=2 -c transfer.fsckobjects=1 \
> @@ -1000,7 +1041,7 @@ test_expect_success 'packfile-uri with transfer.fsckobjects succeeds when .gitmo
>  	git -C "$P" add .gitmodules &&
>  	git -C "$P" commit -m x &&
>  
> -	configure_exclusion "$P" .gitmodules >h &&
> +	configure_exclusion blob "$P" .gitmodules >h &&
>  
>  	sane_unset GIT_TEST_SIDEBAND_ALL &&
>  	git -c protocol.version=2 -c transfer.fsckobjects=1 \
> @@ -1026,7 +1067,7 @@ test_expect_success 'packfile-uri with transfer.fsckobjects fails when .gitmodul
>  	git -C "$P" add .gitmodules &&
>  	git -C "$P" commit -m x &&
>  
> -	configure_exclusion "$P" .gitmodules >h &&
> +	configure_exclusion blob "$P" .gitmodules >h &&
>  
>  	sane_unset GIT_TEST_SIDEBAND_ALL &&
>  	test_must_fail git -c protocol.version=2 -c transfer.fsckobjects=1 \
> diff --git a/upload-pack.c b/upload-pack.c
> index 5c1cd19612..34f8bb81a8 100644
> --- a/upload-pack.c
> +++ b/upload-pack.c
> @@ -1744,9 +1744,12 @@ int upload_pack_advertise(struct repository *r,
>  		     allow_sideband_all_value))
>  			strbuf_addstr(value, " sideband-all");
>  
> -		if (!repo_config_get_string(the_repository,
> +		if ((!repo_config_get_string(the_repository,
>  					    "uploadpack.blobpackfileuri",
> -					    &str) &&
> +					    &str) ||
> +            !repo_config_get_string(the_repository,
> +                        "uploadpack.commitpackfileuri",
> +                        &str)) &&
>  		    str) {
>  			strbuf_addstr(value, " packfile-uris");
>  			free(str);

Not a new issue, but I wonder if we shouldn't just export
configset_find_element(). This is at least 2 stackframes down the chain
of the "does this key exist?" we actually care about here.

Re: [PATCH] Packfile-uris support excluding commit objects

[Teng Long]

To Ævar Arnfjörð Bjarmaso wrote:

> It seems like this and your
> http://lore.kernel.org/git/20210506073354.27833-1-dyroneteng@gmail.com
> should be part of one series, not split up.

Obviously, the current series of patches will be longer, and the patches
of the separate documents you mentioned can be repaired and released in
advance. The latter, Junio said, will be added to the queue.

> Per my understanding in
> https://lore.kernel.org/git/87o8hk820f.fsf@evledraar.gmail.com/ this +
> Jonathan's earlier bfc2a36ff2a (Doc: clarify contents of packfile sent
> as URI, 2021-01-20) still makes this whole thing more confusing that it
> needs to be.

> I think we should just have a new uploadpack.excludeObject, and document
> that uploadpack.blobpackfileuri is an (unfortunately named) synonym for
> it. I.e. the actual implementation doesn't care about the objec type it
> just excludes any object listed via an oidmap. No?

Regarding the naming of "uploadpack.blobpackfileuri" and future
scalability issues, I have similar feelings. In next round, I will follow
your naming suggestions about "uploadpack.excludeObject". In addition,
the naming modification may cause a compatible question, although I know
packfile-uris is an experimental feature, I still hope to get some
compatibility-related suggestions.

> I realize you're probably not a native English speaker (neither am I),
> but I honestly can't understand that "This work will be done in a
> further patch recently.". Do you mean something like:
>        ......

Thanks for correcting, I may rewrite the commit message in the next
patch. I'm not a native English speaker, improving :)

> Please send the earlier doc cleanup + the spec change for this + any doc
> updates as one series.

The reason for splitting the two patches is mentioned above, and the
corresponding document modification to support the exclusion of commit
will be added in the next patch series.

> Nit: Split this across two lines.
> Indending with spaces.
> More indenting with spaces, also don't need the {} here.
> Don't indent the "then", also spaces...
> Use ">objh" not "> objh".

Thanks, will correct them in the next round.

> I think by having a uploadpack.excludeObject documented as the primary
>interface to this we could just say "object already listed by an earlier
>exclusion" or something like that.

Thanks, will refer to your suggestions.

> This whole if/else seems like it could be better split up by discovering
> the variable first, using that as a variable, and then avoiding the
> duplication. But if we just used uploadpack.excludeObject...

I will try to modify it, but I am not sure to fully understand what you
mean. If this problem persists in the next patch, please help to point
out the problem.

> Put stuff like this in "test_when_finished"
> You can just use test_commit here, no?

Thanks, now I know about "test_when_finished" and "test_commit".
In addition, there are some problems with using "rm" directly in t5702,
I will replace them in the next patch series.

> Personally I'd just skip this whole "rev-parse HEAD" etc. and just pass
> the tag name(s) created by earlier test_commit, then have
> configure_exclusion ust always do a rev-parse...

Thanks, will use tag name(s) instead of "HEAD".