ecflow-client-cpp

A client for ecflow using ecflow's c++ API including:

• A tree-like model for workflow
• An ecflow client to get status or node information
• A gRPC server to collect data from ecflow server
• A watcher to watch multiply ecflow servers

Requirements

All requirements except ecFlow and Boost can be installed by vcpkg.

ecFlow

Build ecFlow server and client (python and GUI components are not required).

Boost

ecFlow uses some boost complied libraries:

• system
• filesystem
• date_time
• program_options
• serialization
• thread
• regex

And ecflow-client-cpp uses some boost header-only libraries.

Boost 1.53.0 is suggested to build ecFlow.

gRPC

ecflow client server is based on gRPC.

gtest

To build tests, gtest is required.

spdlog

Logs are printed by spdlog.

CLI11

Commands use CLI11 to parse command line options.

nlohmann/json

We use nlohmann/json to generate JSON string.

HowardHinnant/date

ecflow_watchman uses HowardHinnant/date to generate data string.

yaml-cpp

ecflow_watchman uses YAML config file.

redis-plus-plus

ecflow_watchman saves ecflow status into redis server.

Installation

Use CMake to build the project from source code.

Some variables should be set to help find external libraries.

• ECFLOW_SOURCE_DIR: ecFlow's source code directory.
• ECFLOW_BUILD_DIR: ecFlow's build directory.
• BOOST_ROOT: boost root directory.
• Boost_NO_SYSTEM_PATHS=on: disable system boost search because ecFlow uses a specific version of Boost.

Some variables control which components to build.

• ENABLE_SERVER: build grpc server and examples.
• ENABLE_TESTS: build all tests.

Getting Started

There are several command line tools.

ecflow_watchman

Run ecflow_watchman all to watch several ecFlow servers defined in a config file.

ecflow_watchman watch-all --config-file /path/to/config/file

The statuses of all ecFlow servers are stored into a Redis server.

For an ecflow server with owner: nwp_xp and repo: nwpc_op, the status will be stored using key nwp_xp/nwpc_op/stats.

ecflow gRPC server

Use binary program ecflow_grpc_server to run a gRPC server.

./ecflow_grpc_server --rpc-target="[::]:31181"

gRPC client will get ecFlow status and node information from this server.

See example directory for more examples.

License

Copyright © 2019-2020, Perilla Roc.

ecflow-client-cpp is licensed under GPL v3.0