Google Git
Sign in
vanadium / release.mojo.syncbase / b786c73bf22ca3bf3d68da466cb8f00b0c308c99
commitb786c73bf22ca3bf3d68da466cb8f00b0c308c99[log] [tgz]
authorAli Ghassemi <aghassemi@google.com>Mon Oct 05 15:22:21 2015 -0700
committerAli Ghassemi <aghassemi@google.com>Mon Oct 05 15:22:21 2015 -0700
tree615fe52023418457d40d2912e096c7ff1ae0d24d
parent918f1e1524ab4cc036ccaf5c53fc4a5d4fab285e [diff]
mojo/syncbase: Proper flow control in Dart.

Adding flow control between Dart streams <=> mojom <=> syncbase.

Previous CL (16134) added flow control to
syncbase's mojom API by implementing the observer + ack
pattern where clients have to ACK previous changes before
receiving more changes from the server.

This CL integrates that functionality with Dart streams
by ensuring that we do not ACK if
   1) stream is paused.
   2) stream has no listeners.
This means when the watch Dart stream is paused, we
push back all the way to syncbase server so client
never buffers and instead server buffers at the other
end of the pipe.

Change-Id: I4297d2c5e836bab626a51fa6f4dafedea91e2710
8 files changed
tree: 615fe52023418457d40d2912e096c7ff1ae0d24d
  1. dart/
  2. mojom/
  3. tools/
  4. .gitignore
  5. .jiriignore
  6. AUTHORS
  7. CONTRIBUTING.md
  8. CONTRIBUTORS
  9. LICENSE
  10. Makefile
  11. mojoconfig
  12. PATENTS
  13. README.md
  14. tests
  15. VERSION
README.md

Ether

This project exposes Syncbase as a Mojo service.

Read the architecture proposal.

Initial Mojo setup

You must have the Mojo repo in $MOJO_DIR.

This section only needs to be run once.

See the Mojo readme for more comprehensive instructions.

Install Mojo prereqs

  1. Install depot tools.

  2. Install Goma.

  3. Put the following in your .bashrc:

     # NOTE: Actual locations depend on where you installed depot_tools and
 # goma.
 export PATH=${PATH}:${HOME}/dev/depot_tools
 export GOMA_DIR=${HOME}/goma
 export MOJO_DIR=${HOME}/mojo

Download Mojo repo

$ mkdir $MOJO_DIR && cd $MOJO_DIR

# NOTE: This step takes about 10 min.
$ fetch mojo --target_os=android,linux

# NOTE: This step also takes about 10 min.  Furthermore, the script uses
# 'sudo', so you will need to enter your password.
$ cd src && ./build/install-build-deps.sh

# Or, to include Android deps as well:
$ cd src && ./build/install-build-deps-android.sh

Update Mojo and compile resources

This updates the Mojo repo to HEAD, and builds the Mojo resources needed to compile Ether.

Run this while you grab your morning coffee.

  1. Start by updating the repo.

     $ cd $MOJO_DIR/src
 $ git checkout master
 $ git pull
 $ gclient sync

  2. Compile for Linux. Built resources will be in $MOJO_DIR/src/out/Debug

     $ ./mojo/tools/mojob.py gn
 $ ./mojo/tools/mojob.py build # NOTE: This can take up to 10 minutes.

  3. Compile for Android. Built resources will be in $MOJO_DIR/src/out/android_Debug

     $ ./mojo/tools/mojob.py gn --android
 $ ./mojo/tools/mojob.py build --android # NOTE: This can take up to 10 minutes.

Install Dart SDK

To run Dart apps, you must install the Dart SDK.

Googlers: http://go/install-dart External: https://www.dartlang.org/downloads/

Testing

Run the tests:

make test

This will run all tests listed in the tests file in the root directory of this repo.

The following command will run a single test file. This is useful when the full test suite hangs with no output.

$(MOJO_DIR)/src/mojo/devtools/common/mojo_run -v --enable-multiprocess --shell-path $(MOJO_DIR)/src/out/Debug/mojo_shell dart/test/integration/<filename>