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[flutter_tools] Migrate to package:vm_service 4: trigonometric boogaloo#54132

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jonahwilliams merged 11 commits intoflutter:masterfrom
jonahwilliams:migrate_to_vm_service_boogaloo
Apr 8, 2020
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[flutter_tools] Migrate to package:vm_service 4: trigonometric boogaloo#54132
jonahwilliams merged 11 commits intoflutter:masterfrom
jonahwilliams:migrate_to_vm_service_boogaloo

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@jonahwilliams jonahwilliams commented Apr 6, 2020 •
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Reland VM service migration. Fix unknown double-complete which broke flutter_test_performance.

test stdout (TestStep.testRunning): 00:01 +1 -1: loading /home/flutter/.cocoon/flutter/dev/automated_tests/flutter_test/trivial_widget_test.dart [E]                                                                                       
2020-04-06T10:30:42.377762: test stdout (TestStep.testRunning):   Bad state: Future already completed
2020-04-06T10:30:42.411011: test stdout (TestStep.testRunning):   dart:async/future_impl.dart 42:31                              _AsyncCompleter.complete
test stdout (TestStep.testRunning):   package:flutter_tools/src/vmservice.dart 363:29                VMService._connect.<fn>
2020-04-06T10:30:42.411101: test stdout (TestStep.testRunning):   package:stack_trace/src/stack_zone_specification.dart 209:15   StackZoneSpecification._run
test stdout (TestStep.testRunning):   package:stack_trace/src/stack_zone_specification.dart 119:48   StackZoneSpecification._registerCallback.<fn>
test stdout (TestStep.testRunning):   dart:async/zone.dart 1180:38

@fluttergithubbot fluttergithubbot added c: contributor-productivity Team-specific productivity, code health, technical debt. tool Affects the "flutter" command-line tool. See also t: labels. work in progress; do not review labels Apr 6, 2020
jonahwilliams
jonahwilliams commented Apr 7, 2020
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packages/flutter_tools/lib/src/vmservice.dart
channel.add,
log: null,
disposeHandler: () async {
if (!streamClosedCompleter.isCompleted) {
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@jonahwilliams jonahwilliams Apr 7, 2020

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Missing check for is completed. The old VM service might have been OK with being torn down multiple times though, not sure. At any rate I can't repro the test failure anymore

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If we're trying to tear it down twice, could we also be trying to use it after closing it in some other way?

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I've looked into it a bit more and I'm not certain - I can't consistently repro the crash. I think the stream logic is just too complicated right now, and should be a bit simpler once I no longer need to duplicate events

@jonahwilliams jonahwilliams marked this pull request as ready for review April 7, 2020 19:24
@jonahwilliams jonahwilliams requested a review from zanderso April 7, 2020 19:24
zanderso
zanderso approved these changes Apr 7, 2020
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lgtm w/ question.

packages/flutter_tools/lib/src/vmservice.dart
channel.add,
log: null,
disposeHandler: () async {
if (!streamClosedCompleter.isCompleted) {
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If we're trying to tear it down twice, could we also be trying to use it after closing it in some other way?

@jonahwilliams jonahwilliams merged commit 4851888 into flutter:master Apr 8, 2020
@jonahwilliams jonahwilliams deleted the migrate_to_vm_service_boogaloo branch April 8, 2020 19:33
@kf6gpe kf6gpe mentioned this pull request Apr 9, 2020
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@devoncarew devoncarew mentioned this pull request Apr 14, 2020
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c: contributor-productivity Team-specific productivity, code health, technical debt. tool Affects the "flutter" command-line tool. See also t: labels.

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