Adding New Currency in Java 8

Thu, 17 Nov 2016 01:50:48 +0000

If you are using the java.lang.Currency as part of your entity, most likely you are already regretting it now. Most of the time, a currency is a three letter word, and we don’t need the logic to be bundled in there. Keeping things simple and mapping these currencies as a String or own custom class is the way to go.

For people who did use java.lang.Currency, the pain will arrive when a country changed its currency or added a new one. As example, Belarus changed its currency from BYR to BYN at July 1st, 2016. If you are using java.lang.Currency, you prolly already know by now that Currency.getInstance("BYN") will throw you an exception. Most likely you have also google around, and most likely again, you will stumble upon this or this. It’s basically telling you that there is this new feature in java 7, which lets you overwrite the currency. You will happily overwrite BYR to BYN, and now it starts working. This happyness doesn’t last long as you realize that now that you support BYN, but not BYR anymore. You might also stumble upon some pages which write that we can’t support both currency at the same time.

AWS Eb CLI (v3): How to fix ssl_wrap_socket error in Debian Jessie

Mon, 26 Jan 2015 20:11:28 +0000

This is the first time I’m deploying stuff to elasticbeanstalk, and when I’m trying to deploy my private project, I realized the eb cli I download is the version 2 and has different syntax. I installed the version 3, and it seems like it can only be installed using python package manager pip. After installing it, this is what I get:

rowanto@Rowanto-Deb ~ $ eb
Traceback (most recent call last):
File "/usr/local/bin/eb", line 9, in <module>
load_entry_point('awsebcli==3.0.10', 'console_scripts', 'eb')()
File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 519, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2630, in load_entry_point
return ep.load()
File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2310, in load
return self.resolve()
File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2316, in resolve
module = __import__(self.module_name, fromlist=['__name__'], level=0)
File "/usr/local/lib/python2.7/dist-packages/ebcli/core/ebcore.py", line 23, in <module>
from ..controllers.initialize import InitController
File "/usr/local/lib/python2.7/dist-packages/ebcli/controllers/initialize.py", line 16, in <module>
from ..core.abstractcontroller import AbstractBaseController
File "/usr/local/lib/python2.7/dist-packages/ebcli/core/abstractcontroller.py", line 21, in <module>
from ..core import io, fileoperations, operations
File "/usr/local/lib/python2.7/dist-packages/ebcli/core/operations.py", line 25, in <module>
from ..lib import elasticbeanstalk, s3, iam, aws, ec2, elb
File "/usr/local/lib/python2.7/dist-packages/ebcli/lib/elasticbeanstalk.py", line 25, in <module>
from ..lib import aws
File "/usr/local/lib/python2.7/dist-packages/ebcli/lib/aws.py", line 17, in <module>
import botocore_eb.session
File "/usr/local/lib/python2.7/dist-packages/botocore_eb/session.py", line 27, in <module>
import botocore_eb.credentials
File "/usr/local/lib/python2.7/dist-packages/botocore_eb/credentials.py", line 27, in <module>
from botocore_eb.utils import InstanceMetadataFetcher, parse_key_val_file
File "/usr/local/lib/python2.7/dist-packages/botocore_eb/utils.py", line 22, in <module>
from botocore_eb.vendored import requests
File "/usr/local/lib/python2.7/dist-packages/botocore_eb/vendored/requests/__init__.py", line 53, in <module>
from .packages.urllib3.contrib import pyopenssl
File "/usr/local/lib/python2.7/dist-packages/botocore_eb/vendored/requests/packages/urllib3/contrib/pyopenssl.py", line 55, in <module>
orig_connectionpool_ssl_wrap_socket = connectionpool.ssl_wrap_socket
AttributeError: 'module' object has no attribute 'ssl_wrap_socket'
rowanto@Rowanto-Deb ~ $

And I’m like, what? Googling around the last line returns you many result, but not those relevant with the eb cli v3. There’s also a post which suggest that we use the bundle version (it’s a zip file) of aws cli, but I can’t find a bundle version of eb cli. Long story short, I found this post which helped me to fix the problem. Thanks to @guss77!

Elasticbeanstalk on Rowanto Luo

Adding New Currency in Java 8

AWS Eb CLI (v3): How to fix ssl_wrap_socket error in Debian Jessie