Janusz Mordarski januszm

## pipenv_locking.svg

      
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                januszm
                / pipenv_locking.svg
            
            
              Created
              February 23, 2021 19:09
            
              
                pipenv lock flamegraph
              
          
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## install-python-ubuntu.sh
sudo apt-get update
sudo apt-get install build-essential git libreadline-dev zlib1g-dev libssl-dev libbz2-dev libsqlite3-dev
curl -L https://github.com/pyenv/pyenv-installer/raw/master/bin/pyenv-installer | bash
# may need this, but install script above should handle it; and yeah, you can do multiline inserts with awk/sed or whatever
echo 'export PATH="/root/.pyenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(pyenv init -)"' >> ~/.bashrc
echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.bashrc
source ~/.bashrc
pyenv install 3.6.0

## pg_dump_restore.sh
sudo amazon-linux-extras install postgresql12
pg_dump -Fc -O -h yyy-production.xxx.region.rds.amazonaws.com -p 5432 -U yyy yyy_production -f yyy.dump
# TRUNCATE TABLE tables ... RESTART IDENTITY
# rails db:migrate
pg_restore -Fc -O --disable-triggers --data-only -h yyy-staging.xxx.region.rds.amazonaws.com -d yyy_staging -U yyy yyy.dump
# both commands accept the --table option to specify which table to dump/restore
# select setval('TABLE_NAME_id_seq', (select max(id) from TABLE_NAME)); may be required after RESTART IDENTITY, +1

# In case of version mismatch between the server and pg_dump, add pgdgXX repo and install XX client
[pgdg14]

## gist:e25cc9fd7a1ce97fa10e36720c7589e2
import traceback; [line for line in traceback.format_stack() if not 'site-packages' in line]

## ruby_benchmark.rb
# alternatively use benchmark/ips

n = 100_000
data = "..."

Benchmark.ips do |benchmark|
  benchmark.report("include?") do
    n.times { data.to_s.downcase.include?('windows') }
  end
  benchmark.report("match?") do

## wait_until.rb
# Have you ever had to sleep() in Capybara-WebKit to wait for AJAX and/or CSS animations?

describe 'Modal' do

  should 'display login errors' do
    visit root_path
    click_link 'My HomeMarks'
    within '#login_area' do
      fill_in 'email', with: 'will@not.work'
      fill_in 'password', with: 'test'

## grafana.ini
[database]
log_queries = true

## convert_wkb_to_geojson.rb
result = ActiveRecord::Base.connection.execute("select * from my_shapes_table limit 1;")
shape = parser.parse result.values.first.last # .first row , .last column
RGeo::GeoJSON.encode(shape).to_json
# => "{\"type\":\"MultiPolygon\",\"coordinates\":[[[[...]]]]}"

## profiler_wrapper.rb
# Gemfile
# gem "ruby-prof"
# gem "ruby-prof-flamegraph"
# gem "stackprof"

require "ruby-prof"
require "stackprof"

module ProfilerWrapper
  def self.stackprof(name)

## change_eb_ruby_version.sh
# Currently (2017/2018) it's not possible to change the Ruby 'minor' version (eg. 2.3 => 2.4) using the web console
# However, it's possible using the 'awscli' tool.

brew install awscli # pip install awscli
aws elasticbeanstalk update-environment \
  --solution-stack-name "64bit Amazon Linux 2017.09 v2.6.1 running Ruby 2.4 (Puma)" \
  --environment-name "myappenv1" --region "us-east-2" \
  --version-label "app-1234-210000_120123"

# For Amazon Linux 2
	sudo apt-get update
	sudo apt-get install build-essential git libreadline-dev zlib1g-dev libssl-dev libbz2-dev libsqlite3-dev
	curl -L https://github.com/pyenv/pyenv-installer/raw/master/bin/pyenv-installer \| bash
	# may need this, but install script above should handle it; and yeah, you can do multiline inserts with awk/sed or whatever
	echo 'export PATH="/root/.pyenv/bin:$PATH"' >> ~/.bashrc
	echo 'eval "$(pyenv init -)"' >> ~/.bashrc
	echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.bashrc
	source ~/.bashrc
	pyenv install 3.6.0
	sudo amazon-linux-extras install postgresql12
	pg_dump -Fc -O -h yyy-production.xxx.region.rds.amazonaws.com -p 5432 -U yyy yyy_production -f yyy.dump
	# TRUNCATE TABLE tables ... RESTART IDENTITY
	# rails db:migrate
	pg_restore -Fc -O --disable-triggers --data-only -h yyy-staging.xxx.region.rds.amazonaws.com -d yyy_staging -U yyy yyy.dump
	# both commands accept the --table option to specify which table to dump/restore
	# select setval('TABLE_NAME_id_seq', (select max(id) from TABLE_NAME)); may be required after RESTART IDENTITY, +1

	# In case of version mismatch between the server and pg_dump, add pgdgXX repo and install XX client
	[pgdg14]
	# alternatively use benchmark/ips

	n = 100_000
	data = "..."

	Benchmark.ips do \|benchmark\|
	benchmark.report("include?") do
	n.times { data.to_s.downcase.include?('windows') }
	end
	benchmark.report("match?") do
	# Have you ever had to sleep() in Capybara-WebKit to wait for AJAX and/or CSS animations?

	describe 'Modal' do

	should 'display login errors' do
	visit root_path
	click_link 'My HomeMarks'
	within '#login_area' do
	fill_in 'email', with: 'will@not.work'
	fill_in 'password', with: 'test'
	result = ActiveRecord::Base.connection.execute("select * from my_shapes_table limit 1;")
	shape = parser.parse result.values.first.last # .first row , .last column
	RGeo::GeoJSON.encode(shape).to_json
	# => "{\"type\":\"MultiPolygon\",\"coordinates\":[[[[...]]]]}"
	# Gemfile
	# gem "ruby-prof"
	# gem "ruby-prof-flamegraph"
	# gem "stackprof"

	require "ruby-prof"
	require "stackprof"

	module ProfilerWrapper
	def self.stackprof(name)
	# Currently (2017/2018) it's not possible to change the Ruby 'minor' version (eg. 2.3 => 2.4) using the web console
	# However, it's possible using the 'awscli' tool.

	brew install awscli # pip install awscli
	aws elasticbeanstalk update-environment \
	--solution-stack-name "64bit Amazon Linux 2017.09 v2.6.1 running Ruby 2.4 (Puma)" \
	--environment-name "myappenv1" --region "us-east-2" \
	--version-label "app-1234-210000_120123"

	# For Amazon Linux 2