The document summarizes the presenter's internship at iCRAFT from September 2019 to March 2020. It introduces the presenter and their background. It then discusses projects worked on during the internship, including building a blockchain application using Hyperledger Fabric, migrating databases from SQL to PostgreSQL, and scaling LibreOffice Online using Kubernetes. It also covers meetings and conferences attended. The presenter concludes by thanking iCRAFT and JICA for the opportunity and experience learning new technologies.

1. Final presentation
ABE Initiative Internship Program
2019 年 9 月～ 2020 年 3 月
さんたとら
２０２０年３月 16 日

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Who am I?
● RANDRIANARIVONY Nirinarisantatra
● Engineer’s degree from ENI Fianarantsoa, MG
● Master’s degree from Kobe Institute of Computing
● JICA program participant since Sept. 2017
● Hobbies: judo, hiking, cooking

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マダガスカルはどこですか。
国
旗

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首都：アンタナナリボ（ Antananarivo ）
Source: https://commons.wikimedia.org/wiki/File:Antananarivo01.jpg, CC BY-SA 3.0

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マダガスカル共和国
●
世界で4番目に広い面積を持つ島
●
面積：日本の約 1.6 倍
●
人口： 2600 万人
●
言語：
– マダガスカル語
– フランス語（共に公用語）
●
宗教：
– キリスト教 41 ％
– 伝統宗教 52 ％
– イスラム教 7 ％

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なぜ日本。
[1] [2] [3]
[4][5
]
Source: Wikipedia

7. IT sector in Madagascar

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Source: https://www.telma.mg/

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Some statistics
Source: Internet World Stats (2018)
https://internetworldstats.com/

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Internship activities

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トピック
Blockchain & others LibreOffice Online[2
]
[1
]

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ブロックチェーン
● Using Open Source solutions
● Objective: Build an application on top of
blockchain

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Blockchain part

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Current status
● Hyperledger Fabric network for iCRAFT
● Hyperledger Explorer
● Chaincode written in TypeScript
● Working API (to be improved)

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What did I learn?
● Blockchain technology
– Security, decentralized trust
– Smart contract or chaincode
● Hyperledger
– Fabric
– Explorer
● Docker

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Database migration
● PostgreSQL Open Source RDBMS
● Objective: Migration of existing applications’
databases (MSSQL and PGSQL) into a unique
PGSQL database

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Database part

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Current status
● Successfully tested
– Database migration scripts
– Connection of existing application
● API available (part of the backend)

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pgAdmin4 interface

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What did I learn?
● PL/PGSQL:
– Write functions/stored procedures
● Python:
– Rewrite an existing PHP script
● MSSQL to PGSQL database migration tools:
– pgloader
– Migrate2Postgres

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LibreOffice Online
● Open Source based collaborative online office
● Objective: Scaling Collabora Online &
Nextcloud using HAProxy, and measuring
performance

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Nextcloud HAProxy
Loadbalancer LibreOffice Online
servers
Cloud hostedInternet

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Overview of the interface

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Current status
● High-available Collabora Online & Nextcloud:
https://lool2019.icraft.jp
● Work with container technologies
1.LibreOffice Online on Kubernetes cluster (Github)
2.Deployment with Rancher (Github)

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Performance testing with JMeter

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What did I learn?
● LibreOffice Online:
– Integration between Nextcloud and Collabora Online
– HAProxy for scaling
● Performance and load testing tools:
– JMeter
– Selenium
● Kubernetes:
– Rancher
– Container Attached Storage (OpenEBS)

29. Meetings and conferences

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Kansai Open Forum
2019 年 11 月 8 日・ 9 日

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Open Source Conference
2020 年 1 月
24 日・ 25 日

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Hyperledger Kansai meetup
2019 年 10 月 9 日 Credits: Satomi Tsujita

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LibreOffice meetup
2019 年 11 月 30 日 Credits: Shinji Enoki

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Nextcloud meetup Kansai
2020 年 02 月 13 日 Credits: Martin Heidegger

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Conclusion
● Rich moment of experience:
– Japanese culture
– Met a lot of people
– New technologies
● Enjoyed my internship at iCRAFT
● Recommended to other program participants

36. Some of my slides are available online on
SlideShare of iCRAFT

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My gratitude to ...
● President Yamamoto
● Enoki Shinji
● Remy Gigaut
● All colleagues at iCRAFT
● JICA

38. ご清聴ありがとうございました。
バオバブの並木道・マダガスカル
Source: Baobab or The Tree of Life, Kuli Kuli & Aduna