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tests/main/layout-content-delayed-effects: spread test
Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>
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‎tests/main/layout-content-delayed-effects/gen-snap‎

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#!/bin/bash
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src_dir="$1"
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dst_dir="$2"
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suffix="$3"
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if [ -z "$src_dir" ] || [ -z "$dst_dir" ] || [ -z "$suffix" ]; then
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echo "Usage: $0 <src-dir> <dst-dir> <suffix-to-patch>"
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exit 1
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fi
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if [ -d "$dst_dir" ]; then
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echo "$dst_dir already exists"
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exit 1
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fi
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cp -av "$src_dir" "$dst_dir"
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sed -i "s/%SUFF%/$suffix/g" "$dst_dir/meta/snap.yaml"
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if [ -f "$dst_dir"/special-content-file ]; then
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sed -i "s/%SUFF%/$suffix/g" "$dst_dir"/special-content-file
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fi
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echo "Generated snap at $dst_dir with patched suffix: $suffix"

‎tests/main/layout-content-delayed-effects/task.yaml‎

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summary: Exercise update with multiple content connections and observe delayed effects
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details: |
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Exercise an update where content providers have multiple consumers connected
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and observe delayed mount backend side effects in action.
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prepare: |
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snap install core24
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execute: |
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# Generate and install a bunch of content consumer and provider snaps, the
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# naming pattern is:
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# test-snapd-content-consumer-c1, test-snapd-content-consumer-c2, ..
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# test-snapd-content-provider-p1, test-snapd-content-provider-p2, ..
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for suff in c1 c2 c3; do
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./gen-snap test-snapd-content-consumer "test-snapd-content-consumer-$suff" "$suff"
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"$TESTSTOOLS"/snaps-state install-local "test-snapd-content-consumer-$suff"
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done
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for suff in p1 p2 p3; do
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./gen-snap test-snapd-content-provider "test-snapd-content-provider-$suff" "$suff"
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"$TESTSTOOLS"/snaps-state install-local "test-snapd-content-provider-$suff"
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done
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"$TESTSTOOLS"/snaps-state install-local test-snapd-content-provider-v2
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# prepare modified versions
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(
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cd test-snapd-content-provider-p1
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echo 'content mod p1' > special-content-file
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snap pack
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)
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(
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cd test-snapd-content-provider-v2
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echo 'special content mod v2' > special-content-file
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snap pack
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)
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# establish some connections
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# c1 -> p1, p2
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# c2 -> p2
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# c3 -> p2, p3
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# c1 -> p1
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snap connect test-snapd-content-consumer-c1:special-content \
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test-snapd-content-provider-p1:special-content
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# c1 -> p2
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snap connect test-snapd-content-consumer-c1:special-content \
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test-snapd-content-provider-p2:special-content
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# c1 -> p-v2
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snap connect test-snapd-content-consumer-c1:special-content-v2 \
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test-snapd-content-provider-v2:special-content-v2
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# c2 -> p2
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snap connect test-snapd-content-consumer-c2:special-content \
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test-snapd-content-provider-p2:special-content
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# c3 -> p2
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snap connect test-snapd-content-consumer-c3:special-content \
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test-snapd-content-provider-p2:special-content
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# c3 -> p3
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snap connect test-snapd-content-consumer-c3:special-content \
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test-snapd-content-provider-p3:special-content
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# c3 -> p-v2
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snap connect test-snapd-content-consumer-c3:special-content-v2 \
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test-snapd-content-provider-v2:special-content-v2
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# make sure the mount namespaces are created and assert that the right
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# content is visible
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test-snapd-content-consumer-c1.app | MATCH "hello from app test-snapd-content-consumer-c1"
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# shellcheck disable=SC2016
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snap run --shell test-snapd-content-consumer-c1.app -c \
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'cat $SNAP/connected-content{,-2,-v2}/special-content-file' | \
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tr '\n' ';' | \
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MATCH '^(content p1;content p2|content p2;content p1);special content v2;$'
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test-snapd-content-consumer-c2.app | MATCH "hello from app test-snapd-content-consumer-c2"
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# shellcheck disable=SC2016
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snap run --shell test-snapd-content-consumer-c2.app -c \
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'cat $SNAP/connected-content/special-content-file' | \
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MATCH '^content p2$'
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test-snapd-content-consumer-c3.app | MATCH "hello from app test-snapd-content-consumer-c3"
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# shellcheck disable=SC2016
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snap run --shell test-snapd-content-consumer-c3.app -c \
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'cat $SNAP/connected-content{,-2,-v2}/special-content-file' | \
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tr '\n' ';' | \
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MATCH '^(content p2;content p3|content p3;content p2);special content v2;$'
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test -e /run/snapd/ns/test-snapd-content-consumer-c1.mnt
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test -e /run/snapd/ns/test-snapd-content-consumer-c2.mnt
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test -e /run/snapd/ns/test-snapd-content-consumer-c3.mnt
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# update p1, affects test-snapd-content-consumer
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echo "Update a snap affecting test-snapd-content-consumer only"
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"$TESTSTOOLS"/snaps-state install-local "test-snapd-content-provider-p1"
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snap change --last install | tee change.out
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MATCH 'Done +.* +Apply delayed security backend side effects for snap "test-snapd-content-consumer-c1"' < change.out
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# only one Apply effects task
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test "$(grep -c 'Apply delayed' < change.out)" = "1"
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# no apps were running, so one got discarded
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test ! -e /run/snapd/ns/test-snapd-content-consumer-c1.mnt
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# but the other 2 remain
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test -e /run/snapd/ns/test-snapd-content-consumer-c2.mnt
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test -e /run/snapd/ns/test-snapd-content-consumer-c3.mnt
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# we observe the modified content (which recreates the mount ns0)
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# shellcheck disable=SC2016
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snap run --shell test-snapd-content-consumer-c1.app -c \
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'cat $SNAP/connected-content{,-2,-v2}/special-content-file' | \
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tr '\n' ';' | \
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MATCH '^(content mod p1;content p2|content p2;content mod p1);special content v2;$'
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# update p2, affects test-snapd-content-consumer{,-c2,-c3}
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echo "Update a snap affecting all instances of test-snapd-content-consumer (c1, c2 and c3)"
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"$TESTSTOOLS"/snaps-state install-local "test-snapd-content-provider-p2"
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snap change --last install | tee change.out
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MATCH 'Done +.* +Apply delayed security backend side effects for snap "test-snapd-content-consumer-c1"' < change.out
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MATCH 'Done +.* +Apply delayed security backend side effects for snap "test-snapd-content-consumer-c2"' < change.out
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MATCH 'Done +.* +Apply delayed security backend side effects for snap "test-snapd-content-consumer-c3"' < change.out
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# for all 3 affected snaps
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test "$(grep -c 'Apply delayed' < change.out)" = "3"
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# all 3 were discarded
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test ! -e /run/snapd/ns/test-snapd-content-consumer-c1.mnt
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test ! -e /run/snapd/ns/test-snapd-content-consumer-c2.mnt
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test ! -e /run/snapd/ns/test-snapd-content-consumer-c3.mnt
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# restore
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test-snapd-content-consumer-c1.app | MATCH "hello from app test-snapd-content-consumer-c1"
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test-snapd-content-consumer-c2.app | MATCH "hello from app test-snapd-content-consumer-c2"
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test-snapd-content-consumer-c3.app | MATCH "hello from app test-snapd-content-consumer-c3"
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# affects test-snapd-content-consumer-c3 only
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echo "Update a snap affecting test-snapd-content-consumer-c3 only"
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"$TESTSTOOLS"/snaps-state install-local "test-snapd-content-provider-p3"
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snap change --last install | tee change.out
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MATCH 'Done +.* +Apply delayed security backend side effects for snap "test-snapd-content-consumer-c3"' < change.out
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test "$(grep -c 'Apply delayed' < change.out)" = "1"
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test -e /run/snapd/ns/test-snapd-content-consumer-c1.mnt
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test -e /run/snapd/ns/test-snapd-content-consumer-c2.mnt
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test ! -e /run/snapd/ns/test-snapd-content-consumer-c3.mnt
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# restore
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test-snapd-content-consumer-c3.app | MATCH "hello from app test-snapd-content-consumer-c3"
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# update of 2 provider snaps, affects test-snapd-content-consumer{,-c3}, due
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# to the following connections:
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# c1 -> p1 & p-v2
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# c3 -> p-v2
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echo "Update a snap affecting test-snapd-content-consumer c1 and c3"
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snap install --dangerous \
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test-snapd-content-provider-p1/test-snapd-content-provider-p1_*.snap \
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test-snapd-content-provider-v2/test-snapd-content-provider-v2_*.snap
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snap change --last install | tee change.out
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MATCH 'Done +.* +Apply delayed security backend side effects for snap "test-snapd-content-consumer-c1"' < change.out
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MATCH 'Done +.* +Apply delayed security backend side effects for snap "test-snapd-content-consumer-c3"' < change.out
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test "$(grep -c 'Apply delayed' < change.out)" = "2"
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test ! -e /run/snapd/ns/test-snapd-content-consumer-c1.mnt
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test -e /run/snapd/ns/test-snapd-content-consumer-c2.mnt
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test ! -e /run/snapd/ns/test-snapd-content-consumer-c3.mnt
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# both affected snaps see modified content
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# shellcheck disable=SC2016
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snap run --shell test-snapd-content-consumer-c1.app -c \
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'cat $SNAP/connected-content{,-2,-v2}/special-content-file' | \
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tr '\n' ';' | \
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MATCH '^(content mod p1;content p2|content p2;content mod p1);special content mod v2;$'
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# c3 shows updated content from p-v2
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# shellcheck disable=SC2016
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snap run --shell test-snapd-content-consumer-c3.app -c \
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'cat $SNAP/connected-content{,-2,-v2}/special-content-file' | \
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tr '\n' ';' | \
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MATCH '^(content p2;content p3|content p3;content p2);special content mod v2;$'
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echo "Observe mount namespace update when an application is running"
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# another modification
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(
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cd test-snapd-content-provider-v2
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echo 'special content mod v3' > special-content-file
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snap pack
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)
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# restore c3 mount ns
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test-snapd-content-consumer-c3.app | MATCH "hello from app test-snapd-content-consumer-c3"
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# start application that prevents the mount ns from being discarded
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snap run --shell test-snapd-content-consumer-c1.app -c \
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'sleep 3600' &
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sleeppid=$!
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# grab info about the inode of the captured mount namespace
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before_inode="$(stat -c '%i:%y' /run/snapd/ns/test-snapd-content-consumer-c1.mnt)"
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snap install --dangerous \
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test-snapd-content-provider-p1/test-snapd-content-provider-p1_*.snap \
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test-snapd-content-provider-v2/test-snapd-content-provider-v2_*.snap
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snap change --last install | tee change.out
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MATCH 'Done +.* +Apply delayed security backend side effects for snap "test-snapd-content-consumer-c1"' < change.out
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MATCH 'Done +.* +Apply delayed security backend side effects for snap "test-snapd-content-consumer-c3"' < change.out
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test "$(grep -c 'Apply delayed' < change.out)" = "2"
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test -e /run/snapd/ns/test-snapd-content-consumer-c1.mnt
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test -e /run/snapd/ns/test-snapd-content-consumer-c2.mnt
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test ! -e /run/snapd/ns/test-snapd-content-consumer-c3.mnt
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after_inode="$(stat -c '%i:%y' /run/snapd/ns/test-snapd-content-consumer-c1.mnt)"
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# the mount ns is the same, it hasn't been discarded
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test "$before_inode" = "$after_inode"
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kill "$sleeppid"
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wait || true
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# join it to observe updated content
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# TODO: the output should be:
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# > content mod v1;content p2;special content mod v3;
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# however due to a buggy mount ns update new content is not, or shows up at
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# connected-content-v2-2, the previously visible content from p2 and p2 is
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# messed up as well
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# shellcheck disable=SC2016
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snap run --shell test-snapd-content-consumer-c1.app -c \
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'cat $SNAP/connected-content{,-2,-v2}/special-content-file' | \
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tr '\n' ';' | \
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MATCH '^.*;special content mod v2;$'
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# discard and observe correct content'
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snapd.tool exec snap-discard-ns test-snapd-content-consumer-c1
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# shellcheck disable=SC2016
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snap run --shell test-snapd-content-consumer-c1.app -c \
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'cat $SNAP/connected-content{,-2,-v2}/special-content-file' | \
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tr '\n' ';' | \
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MATCH '^(content mod p1;content p2|content p2;content mod p1);special content mod v3;$'

‎tests/main/layout-content-delayed-effects/test-snapd-content-consumer/bin/app‎

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#!/bin/sh
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echo "hello from app $SNAP_INSTANCE_NAME"

‎tests/main/layout-content-delayed-effects/test-snapd-content-consumer/connected-content-v2/.gitkeep‎

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‎tests/main/layout-content-delayed-effects/test-snapd-content-consumer/connected-content/.gitkeep‎

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‎tests/main/layout-content-delayed-effects/test-snapd-content-consumer/meta/snap.yaml‎

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name: test-snapd-content-consumer-%SUFF%
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version: 1.0.0
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base: core24
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apps:
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app:
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command: bin/app
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plugs:
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- special-content
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plugs:
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special-content:
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interface: content
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target: $SNAP/connected-content
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special-content-v2:
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interface: content
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target: $SNAP/connected-content-v2

‎tests/main/layout-content-delayed-effects/test-snapd-content-provider-v2/meta/snap.yaml‎

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name: test-snapd-content-provider-v2
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version: 2.0.0
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base: core24
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slots:
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special-content-v2:
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interface: content
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read:
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- /

‎tests/main/layout-content-delayed-effects/test-snapd-content-provider-v2/special-content-file‎

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special content v2

‎tests/main/layout-content-delayed-effects/test-snapd-content-provider/meta/snap.yaml‎

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name: test-snapd-content-provider-%SUFF%
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version: 1.0.0
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base: core24
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slots:
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special-content:
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interface: content
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read:
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- /

‎tests/main/layout-content-delayed-effects/test-snapd-content-provider/special-content-file‎

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content %SUFF%

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