upstream/mercurial-mirror Files · tests/test-cache-abuse.t

wireprotov2: define and implement "manifestdata" command...

wireprotov2: define and implement "manifestdata" command The added command can be used for obtaining manifest data. Given a manifest path and set of manifest nodes, data about manifests can be retrieved. Unlike changeset data, we wish to emit deltas to describe manifest revisions. So the command uses the relatively new API for building delta requests and emitting them. The code calls into deltaparent(), which I'm not very keen of. There's still work to be done in delta generation land so implementation details of storage (e.g. exactly one delta is stored/available) don't creep into higher levels. But we can worry about this later (there is already a TODO on imanifestorage tracking this). On the subject of parent deltas, the server assumes parent revisions exist on the receiving end. This is obviously wrong for shallow clone. I've added TODOs to add a mechanism to the command to allow clients to specify desired behavior. This shouldn't be too difficult to implement. Another big change is that the client must explicitly request manifest nodes to retrieve. This is a major departure from "getbundle," where the server derives relevant manifests as it iterates changesets and sends them automatically. As implemented, the client must transmit each requested node to the server. At 20 bytes per node, we're looking at 2 MB per 100,000 nodes. Plus wire encoding overhead. This isn't ideal for clients with limited upload bandwidth. I plan to address this in the future by allowing alternate mechanisms for defining the revisions to retrieve. One idea is to define a range of changeset revisions whose manifest revisions to retrieve (similar to how "changesetdata" works). We almost certainly want an API to look up an individual manifest by node. And that's where I've chosen to start with the implementation. Again, a theme of this early exchangev2 work is I want to start by building primitives for accessing raw repository data first and see how far we can get with those before we need more complexity. Differential Revision: https://phab.mercurial-scm.org/D4488

Martin von Zweigbergk - - Load All Authors

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        Matt Mackall
    
tests: test a variety of cache invariants...

              r29041
            
      Enable obsolete markers

        $ cat >> $HGRCPATH << EOF

        > [experimental]

        Boris Feld
    
config: use 'experimental.evolution.create-markers'...

              r34867
            
        > evolution.createmarkers=True

        Matt Mackall
    
tests: test a variety of cache invariants...

              r29041
            
        > [phases]

        > publish=False

        > EOF

      Build a repo with some cacheable bits:

        $ hg init a

        $ cd a

        $ echo a > a

        $ hg ci -qAm0

        $ hg tag t1

        $ hg book -i bk1

        $ hg branch -q b2

        $ hg ci -Am1

        $ hg tag t2

        $ echo dumb > dumb

        $ hg ci -qAmdumb

        $ hg debugobsolete b1174d11b69e63cb0c5726621a43c859f0858d7f

        Boris Feld
    
debugobsolete: also report the number of obsoleted changesets...

              r33542
            
        obsoleted 1 changesets

        Matt Mackall
    
tests: test a variety of cache invariants...

              r29041
            
        $ hg phase -pr t1

        $ hg phase -fsr t2

      Make a helper function to check cache damage invariants:

      - command output shouldn't change

      - cache should be present after first use

      - corruption/repair should be silent (no exceptions or warnings)

      - cache should survive deletion, overwrite, and append

      - unreadable / unwriteable caches should be ignored

      - cache should be rebuilt after corruption

        $ damage() {

        >  CMD=$1

        >  CACHE=.hg/cache/$2

        >  CLEAN=$3

        >  hg $CMD > before

        >  test -f $CACHE || echo "not present"

        >  echo bad > $CACHE

        >  test -z "$CLEAN" || $CLEAN

        >  hg $CMD > after

        FUJIWARA Katsunori
    
tests: use pdiff instead of diff for portability...

              r33614
            
        >  "$RUNTESTDIR/pdiff" before after || echo "*** overwrite corruption"

        Matt Mackall
    
tests: test a variety of cache invariants...

              r29041
            
        >  echo corruption >> $CACHE

        >  test -z "$CLEAN" || $CLEAN

        >  hg $CMD > after

        FUJIWARA Katsunori
    
tests: use pdiff instead of diff for portability...

              r33614
            
        >  "$RUNTESTDIR/pdiff" before after || echo "*** append corruption"

        Matt Mackall
    
tests: test a variety of cache invariants...

              r29041
            
        >  rm $CACHE

        >  mkdir $CACHE

        >  test -z "$CLEAN" || $CLEAN

        >  hg $CMD > after

        FUJIWARA Katsunori
    
tests: use pdiff instead of diff for portability...

              r33614
            
        >  "$RUNTESTDIR/pdiff" before after || echo "*** read-only corruption"

        Matt Mackall
    
tests: test a variety of cache invariants...

              r29041
            
        >  test -d $CACHE || echo "*** directory clobbered"

        >  rmdir $CACHE

        >  test -z "$CLEAN" || $CLEAN

        >  hg $CMD > after

        FUJIWARA Katsunori
    
tests: use pdiff instead of diff for portability...

              r33614
            
        >  "$RUNTESTDIR/pdiff" before after || echo "*** missing corruption"

        Matt Mackall
    
tests: test a variety of cache invariants...

              r29041
            
        >  test -f $CACHE || echo "not rebuilt"

        > }

      Beat up tags caches:

        $ damage "tags --hidden" tags2

        $ damage tags tags2-visible

        $ damage "tag -f t3" hgtagsfnodes1

        Martin von Zweigbergk
    
evolution: report new unstable changesets...

              r35727
            
        1 new orphan changesets

        1 new orphan changesets

        1 new orphan changesets

        1 new orphan changesets

        1 new orphan changesets

        Matt Mackall
    
tests: test a variety of cache invariants...

              r29041
            
      Beat up branch caches:

        $ damage branches branch2-base "rm .hg/cache/branch2-[vs]*"

        $ damage branches branch2-served "rm .hg/cache/branch2-[bv]*"

        $ damage branches branch2-visible

        $ damage "log -r branch(.)" rbc-names-v1

        $ damage "log -r branch(default)" rbc-names-v1

        $ damage "log -r branch(b2)" rbc-revs-v1

      We currently can't detect an rbc cache with unknown names:

        $ damage "log -qr branch(b2)" rbc-names-v1

        --- before	* (glob)

        +++ after	* (glob)

        Danek Duvall
    
test-cache-abuse: correct for different hunk headers between Solaris and GNU...

              r29255
            
        @@ -1,8 +?,0 @@ (glob)

        Matt Mackall
    
tests: test a variety of cache invariants...

              r29041
            
        -2:5fb7d38b9dc4

        -3:60b597ffdafa

        -4:b1174d11b69e

        -5:6354685872c0

        -6:5ebc725f1bef

        -7:7b76eec2f273

        -8:ef3428d9d644

        -9:ba7a936bc03c

        *** append corruption

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Matt Mackall tests: test a variety of cache invariants...	r29041	Enable obsolete markers

		$ cat >> $HGRCPATH << EOF
		> [experimental]
Boris Feld config: use 'experimental.evolution.create-markers'...	r34867	> evolution.createmarkers=True
Matt Mackall tests: test a variety of cache invariants...	r29041	> [phases]
		> publish=False
		> EOF

		Build a repo with some cacheable bits:

		$ hg init a
		$ cd a

		$ echo a > a
		$ hg ci -qAm0
		$ hg tag t1
		$ hg book -i bk1

		$ hg branch -q b2
		$ hg ci -Am1
		$ hg tag t2

		$ echo dumb > dumb
		$ hg ci -qAmdumb
		$ hg debugobsolete b1174d11b69e63cb0c5726621a43c859f0858d7f
Boris Feld debugobsolete: also report the number of obsoleted changesets...	r33542	obsoleted 1 changesets
Matt Mackall tests: test a variety of cache invariants...	r29041
		$ hg phase -pr t1
		$ hg phase -fsr t2

		Make a helper function to check cache damage invariants:

		- command output shouldn't change
		- cache should be present after first use
		- corruption/repair should be silent (no exceptions or warnings)
		- cache should survive deletion, overwrite, and append
		- unreadable / unwriteable caches should be ignored
		- cache should be rebuilt after corruption

		$ damage() {
		> CMD=$1
		> CACHE=.hg/cache/$2
		> CLEAN=$3
		> hg $CMD > before
		> test -f $CACHE \|\| echo "not present"
		> echo bad > $CACHE
		> test -z "$CLEAN" \|\| $CLEAN
		> hg $CMD > after
FUJIWARA Katsunori tests: use pdiff instead of diff for portability...	r33614	> "$RUNTESTDIR/pdiff" before after \|\| echo "*** overwrite corruption"
Matt Mackall tests: test a variety of cache invariants...	r29041	> echo corruption >> $CACHE
		> test -z "$CLEAN" \|\| $CLEAN
		> hg $CMD > after
FUJIWARA Katsunori tests: use pdiff instead of diff for portability...	r33614	> "$RUNTESTDIR/pdiff" before after \|\| echo "*** append corruption"
Matt Mackall tests: test a variety of cache invariants...	r29041	> rm $CACHE
		> mkdir $CACHE
		> test -z "$CLEAN" \|\| $CLEAN
		> hg $CMD > after
FUJIWARA Katsunori tests: use pdiff instead of diff for portability...	r33614	> "$RUNTESTDIR/pdiff" before after \|\| echo "*** read-only corruption"
Matt Mackall tests: test a variety of cache invariants...	r29041	> test -d $CACHE \|\| echo "*** directory clobbered"
		> rmdir $CACHE
		> test -z "$CLEAN" \|\| $CLEAN
		> hg $CMD > after
FUJIWARA Katsunori tests: use pdiff instead of diff for portability...	r33614	> "$RUNTESTDIR/pdiff" before after \|\| echo "*** missing corruption"
Matt Mackall tests: test a variety of cache invariants...	r29041	> test -f $CACHE \|\| echo "not rebuilt"
		> }

		Beat up tags caches:

		$ damage "tags --hidden" tags2
		$ damage tags tags2-visible
		$ damage "tag -f t3" hgtagsfnodes1
Martin von Zweigbergk evolution: report new unstable changesets...	r35727	1 new orphan changesets
		1 new orphan changesets
		1 new orphan changesets
		1 new orphan changesets
		1 new orphan changesets
Matt Mackall tests: test a variety of cache invariants...	r29041
		Beat up branch caches:

		$ damage branches branch2-base "rm .hg/cache/branch2-[vs]*"
		$ damage branches branch2-served "rm .hg/cache/branch2-[bv]*"
		$ damage branches branch2-visible
		$ damage "log -r branch(.)" rbc-names-v1
		$ damage "log -r branch(default)" rbc-names-v1
		$ damage "log -r branch(b2)" rbc-revs-v1

		We currently can't detect an rbc cache with unknown names:

		$ damage "log -qr branch(b2)" rbc-names-v1
		--- before * (glob)
		+++ after * (glob)
Danek Duvall test-cache-abuse: correct for different hunk headers between Solaris and GNU...	r29255	@@ -1,8 +?,0 @@ (glob)
Matt Mackall tests: test a variety of cache invariants...	r29041	-2:5fb7d38b9dc4
		-3:60b597ffdafa
		-4:b1174d11b69e
		-5:6354685872c0
		-6:5ebc725f1bef
		-7:7b76eec2f273
		-8:ef3428d9d644
		-9:ba7a936bc03c
		*** append corruption