This program aims to demonstrate that it is possible to run a client application in C++ for Hyperledger Sawtooth blockchain.

I profile this program to have an overview of the most required functions used in an Hyperledger Sawtooth client application.

Please make an issue for questions or errors.

Pull submodules !

git submodule update --init --recursive

Run the setup.sh or follow the next commands to build required libs.

Make Secp256k1:

cd secp256k1/
./autogen.sh
./configure --enable-module-recovery --without-bignum
make
cd ..

Make cryptopp:

cd cryptopp/
make
cd ..

Make protobuf:

cd protobuf/
git submodule update --init --recursive
./autogen.sh
./configure --prefix=$(pwd)/.libs/ --disable-shared
make
make install
cd ..

To build the app just:

make
./app 

Here is a simple description of the steps inside the program:

• init transaction
• build transaction (using protobuf) & sign transaction (secp256k1)
• push_transaction

*Checked items are currently done.

Note: Compile without -pg . Also make sure to REMOVE gperftools include with ProfilerStart and ProfilerStop.

#Run the program:
valgrind --tool=callgrind ./app --push inc

#Visualize:
kcachegrind <previous file output>

Note: Compile without -pg . Also make sure to ADD gperftools include with ProfilerStart and ProfilerStop.

It seems the program is to fast for gperftools. You still can get some results with CPUPROFILE_REALTIME=1 .

#Run the program:
CPUPROFILE_REALTIME=1 CPUPROFILE_FREQUENCY=10000000 LD_PRELOAD=/usr/local/lib/libprofiler.so.0.5.0 ./app --push inc

#Visualize:
./pprof -kcachegrind ./app ./profile.txt

Note: to install gperftools/pperf:

#For gperftools:
git clone https://github.com/gperftools/gperftools.git
./autorun.sh
./configure
make
sudo make install

#For pperf:
go get -u github.com/google/pprof
#Or:
git clone https://github.com/google/pprof.git
cd pprof && go build

This work has been supported by the French government, through the U CA JEDI and EUR DS4H Investments in the Future projects managed by the National Research Agency (ANR) with the reference number ANR-15-IDEX-0001 and ANR-17-EURE-0004.