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Showing posts from March, 2018

OPA for HTTP Authorization

Open Policy Agent[1] is a promising, light weight and very generic policy engine to govern authorization is any type of domain. I found this comparion[2] very attractive in evaluating OPA for a project I am currently working on, where they demonstrate how OPA can cater same functionality defined in RBAC, RBAC with Seperation of Duty, ABAC and XACML.  
Here are the steps to a brief demonstration of OPA used for HTTP API authorization based on the sample [3], taking it another level up.
Running OPA Server First we need to download OPA from [4], based on the operating system we are running on.  For linux, curl -L -o opa https://github.com/open-policy-agent/opa/releases/download/v0.10.3/opa_linux_amd64 Make it executable, chmod 755 ./opa Once done, we can start OPA policy engine as a server.
./opa run --server Define Data and Rules Next we need to load data and authorization rules to the server, so it can make decisions. OPA defines these in files in the format of .rego. Below is a sample …

How to Pick Best Stocks in Share Market

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When thinking about investments, 3 things come to my mind, in the Sri Lankan context. Buy real state in a suburb or a town that is fast growingPut in a Fixed Deposit in a bankInvest in the stock market As the current FD rates are in the declining phase, it did not really come as a good option for me at the moment of writing this. Hence I thought to investigate a bit on investing in the share market as it doesn't really need a larger amount of money as to by property as in option 1.
Below is an insightful speech by the richest person in Sri Lanka, who is known as a business magnate, 'Mr. Dhammika Perera', explaining how he started with share market (while the overall speech highlights many important facts, he specifically talks about share market from 6minutes and 26 seconds. Speech is in Sinhalese).

One thing he said, captured me that do not enter a business if you do not know about it. He also emphasized that it's the knowledge we should seek, not money, which surpris…