iroha | Iroha - A simple , decentralized ledger | Blockchain library

I solved my problem with shell tool yq

does the account you used to execute the 'Create Role' command have the "can_create_role" permission?

I got the solution...

on restarting the iroha daemon I got the following warning.

In my opinion Iroha is more suitable for building blockchain applications for mobile because Iroha is written in c++.

Iroha is a distributed ledger project, that aims to provide a development environment where C++ and mobile application developers could contribute to Hyperledger. The project seeks to complement Fabric, Sawtooth, and other potential projects, being a framework with pre-defined set of commands, permissions and queries that can be used with various client libraries to easily create applications for desktop and mobile platforms.

Key Characteristics Permissioned network; written in C++; Client libraries in Java, Python, JS, Swift; BFT consensus algorithm YetAnotherConsensus (YAC); ready-to-use set of commands and queries, Multi-signature transactions.

It takes a minute to run iroha network. you can start your network by just copy and pasting this docker command in your terminal. docker network create iroha-network

Whereas you can also use hyperledger fabric to build applications but the documentation is still not clear. you will find broken links and development on fabric will take more time.

@MostafaHussein I removed the above 3 lines then executed the run-iroha-dev.sh script, and it started to work. it attached me to /opt/iroha in docker container and downloaded hyperledger/iroha:develop-build and iroha images and launched two containers. is it same what you are suggesting?

Please note that you are trying to run Iroha node inside docker container, thus inside docker network. Postgres instance running on host machine will not be reachable from docker container. I suggest you running two docker containers: Postgres and Iroha. They will be in the same network, thus they will see each other.

In the link that you provided above, there are instructions for that.

Unfortunately, the libraries might not be up-to-date all the time. At the moment one of the maintainers fixed the library to work with develop branch. Here: https://bitbucket.org/Emkil/swiftyiroha/

This might have happened because of the outdated library version. Please try one of the more recent ones here: https://artifact.soramitsu.co.jp/iroha/bindings/java/ or use a new Java library from the contributor: https://github.com/Warchant/iroha-pure-java - it is good and used in some projects based on Iroha already.

About Iroha, there are two options depending on what you mean by iOS/Android device.

1. If we are speaking about ARM-based hardware with some linux onboard (like Raspberry PI) or rooted Android device, then it is possible to launch Iroha as a node (a peer within a network) on that device. In that case, Iroha will run as a platform-native binary.
2. If we are speaking about default iOS or Android device with untouched factory shell (GUI), then it is generally not possible and we are not providing any instructions regarding this. Though you still can create mobile applications that use Iroha. They will be Iroha clients and would not serve as peers.

In order to run Iroha on ARM device you have to build it on the target platform. Building Iroha requires notable amount of RAM - for 32-bit ARM host you will need 8GB RAM. The build can be performed inside Docker container. To prepare the container you will need to:

1. Clone Iroha git repo: https://github.com/hyperledger/iroha
2. Do docker build -t iroha-build-env . being in iroha/docker/develop
3. Run the newly built container and build there Iroha itself

Please do not forget to mount a folder with Iroha git repository to the container