[infra] Use dart-lang/co19 issue links in co19 rolls

* Add dart-lang/co19 in front of #123 issue references.
* Update the co19_2 script to match the co19 script.
* Track main from the roll branches.
* Add a comment between the two co19 hashes to prevent merge conflicts.

Fixes: b/200911019
Change-Id: I2806ac7e9cd5ff3d24cac0e50a1d094163b35d7a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/214046
Reviewed-by: William Hesse <[email protected]>

DEPS

@@ -45,6 +45,7 @@ vars = {
   # hashes. It requires access to the dart-build-access group, which EngProd
   # has.
   "co19_rev": "21e89324642656dcd903e97352d9d16da6a361ee",
+  # This line prevents conflicts when both packages are rolled simultaneously.
   "co19_2_rev": "3e1ea1af9ef293d7f6a8f3332b5c71c7072a30e0",
 
   # The internal benchmarks to use. See go/dart-benchmarks-internal

tests/co19/update.sh

@@ -18,7 +18,7 @@ OLD=$(gclient getdep --var=co19_rev)
 NEW=$(cd $CO19 && git fetch origin && git rev-parse origin/master)
 
 git fetch origin
-git branch cl-co19-roll-co19-to-$NEW origin/master
+git branch cl-co19-roll-co19-to-$NEW origin/main
 git checkout cl-co19-roll-co19-to-$NEW
 
 # Build a cipd package of the commit.
@@ -50,7 +50,7 @@ git commit DEPS -m \
   "$(printf "[co19] Roll co19 to $NEW\n\n" \
   && cd $CO19 \
   && git log --date='format:%Y-%m-%d' --pretty='format:%ad %ae %s' $OLD..$NEW \
-    | tr -d '#' \
+    | sed 's/\#/dart-lang\/co19\#/g' \
   && printf "\nCq-Include-Trybots: dart/try:$BUILDERS\n")"
 
 rm -rf tests/co19/src.git

tests/co19_2/update.sh

@@ -18,7 +18,7 @@ OLD=$(gclient getdep --var=co19_2_rev)
 NEW=$(cd $CO19 && git fetch origin && git rev-parse origin/pre-nnbd)
 
 git fetch origin
-git branch cl-co19-roll-co19-to-$NEW origin/master
+git branch cl-co19-roll-co19-to-$NEW origin/main
 git checkout cl-co19-roll-co19-to-$NEW
 
 # Build a cipd package of the commit.
@@ -33,32 +33,32 @@ bb collect -interval 10s $BUILD_ID
 # Update DEPS:
 gclient setdep --var=co19_2_rev=$NEW
 
+BUILDERS=$(jq -r '.builder_configurations
+  | map(select(.steps
+    | any(.arguments
+      | select(.!=null)
+        | any(test("co19_2($|(/.*))")))))
+  | map(.builders)
+  | flatten
+  | sort
+  | .[] += "-try"
+  | join(",")' \
+  tools/bots/test_matrix.json)
+
 # Make a nice commit. Don't include the '#' character to avoid referencing Dart
 # SDK issues.
 git commit DEPS -m \
-  "$(printf "[co19] Roll co19_2 to $NEW\n\n" &&
-     cd $CO19 &&
-     git log --date='format:%Y-%m-%d' --pretty='format:%ad %ae %s' \
-       $OLD..$NEW | tr -d '#')"
+  "$(printf "[co19] Roll co19_2 to $NEW\n\n" \
+  && cd $CO19 \
+  && git log --date='format:%Y-%m-%d' --pretty='format:%ad %ae %s' $OLD..$NEW \
+    | sed 's/\#/dart-lang\/co19\#/g' \
+  && printf "\nCq-Include-Trybots: dart/try:$BUILDERS\n")"
 
 rm -rf tests/co19_2/src.git
 
 GIT_EDITOR=true git cl upload
 ISSUE=$(git config --get branch.cl-co19-roll-co19-to-$NEW.gerritissue)
 
-BUILDERS=$(jq '.builder_configurations|
-                map(select(.steps|
-                           any(.arguments|
-                               select(.!=null)|
-                               any(.=="co19_2"))))|
-                map(.builders)|
-                flatten|
-                sort' \
-                tools/bots/test_matrix.json \
-             | tr -d '[",]')
-
-git cl try -B dart/try $(for BUILDER in $BUILDERS; do echo -b $BUILDER-try; done)
-
 git cl web
 
 set +x