Add sentry (from updated fork)

This commit is contained in:
Omar Roth 2017-12-30 15:18:59 -06:00
parent 764fdf42ef
commit c7c8cc1e85
3 changed files with 208 additions and 0 deletions

109
dev/sentry.cr Normal file
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module Sentry
FILE_TIMESTAMPS = {} of String => String # {file => timestamp}
class ProcessRunner
getter app_process : (Nil | Process) = nil
property process_name : String
property should_build = true
property files = [] of String
def initialize(
@process_name : String,
@build_command : String,
@run_command : String,
@build_args : Array(String) = [] of String,
@run_args : Array(String) = [] of String,
files = [] of String,
should_build = true)
@files = files
@should_build = should_build
@should_kill = false
@app_built = false
end
private def build_app_process
puts "🤖 compiling #{process_name}..."
build_args = @build_args
if build_args.size > 0
Process.run(@build_command, build_args, shell: true, output: Process::Redirect::Inherit, error: Process::Redirect::Inherit)
else
Process.run(@build_command, shell: true, output: Process::Redirect::Inherit, error: Process::Redirect::Inherit)
end
end
private def create_app_process
app_process = @app_process
if app_process.is_a? Process
unless app_process.terminated?
puts "🤖 killing #{process_name}..."
app_process.kill
end
end
puts "🤖 starting #{process_name}..."
run_args = @run_args
if run_args.size > 0
@app_process = Process.new(@run_command, run_args, output: Process::Redirect::Inherit, error: Process::Redirect::Inherit)
else
@app_process = Process.new(@run_command, output: Process::Redirect::Inherit, error: Process::Redirect::Inherit)
end
end
private def get_timestamp(file : String)
File.stat(file).mtime.to_s("%Y%m%d%H%M%S")
end
# Compiles and starts the application
#
def start_app
return create_app_process unless @should_build
build_result = build_app_process()
if build_result && build_result.success?
@app_built = true
create_app_process()
elsif !@app_built # if build fails on first time compiling, then exit
puts "🤖 Compile time errors detected. SentryBot shutting down..."
exit 1
end
end
# Scans all of the `@files`
#
def scan_files
file_changed = false
app_process = @app_process
files = @files
Dir.glob(files) do |file|
timestamp = get_timestamp(file)
if FILE_TIMESTAMPS[file]? && FILE_TIMESTAMPS[file] != timestamp
FILE_TIMESTAMPS[file] = timestamp
file_changed = true
puts "🤖 #{file}"
elsif FILE_TIMESTAMPS[file]?.nil?
puts "🤖 watching file: #{file}"
FILE_TIMESTAMPS[file] = timestamp
file_changed = true if (app_process && !app_process.terminated?)
end
end
start_app() if (file_changed || app_process.nil?)
end
def run
puts "🤖 Your SentryBot is vigilant. beep-boop..."
loop do
if @should_kill
puts "🤖 Powering down your SentryBot..."
break
end
scan_files
sleep 1
end
end
def kill
@should_kill = true
end
end
end

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dev/sentry_cli.cr Normal file
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require "option_parser"
require "yaml"
require "./sentry"
process_name = nil
begin
shard_yml = YAML.parse File.read("shard.yml")
name = shard_yml["name"]?
process_name = name.as_s if name
rescue e
end
build_args = [] of String
build_command = "crystal build ./src/#{process_name}.cr"
run_args = [] of String
run_command = "./#{process_name}"
files = ["./src/**/*.cr", "./src/**/*.ecr"]
files_cleared = false
show_help = false
should_build = true
OptionParser.parse! do |parser|
parser.banner = "Usage: ./sentry [options]"
parser.on(
"-n NAME",
"--name=NAME",
"Sets the name of the app process (current name: #{process_name})") { |name| process_name = name }
parser.on(
"-b COMMAND",
"--build=COMMAND",
"Overrides the default build command") { |command| build_command = command }
parser.on(
"--build-args=ARGS",
"Specifies arguments for the build command") do |args|
args_arr = args.strip.split(" ")
build_args = args_arr if args_arr.size > 0
end
parser.on(
"--no-build",
"Skips the build step") { should_build = false }
parser.on(
"-r COMMAND",
"--run=COMMAND",
"Overrides the default run command") { |command| run_command = command }
parser.on(
"--run-args=ARGS",
"Specifies arguments for the run command") do |args|
args_arr = args.strip.split(" ")
run_args = args_arr if args_arr.size > 0
end
parser.on(
"-w FILE",
"--watch=FILE",
"Overrides default files and appends to list of watched files") do |file|
unless files_cleared
files.clear
files_cleared = true
end
files << file
end
parser.on(
"-i",
"--info",
"Shows the values for build/run commands, build/run args, and watched files") do
puts "
name: #{process_name}
build: #{build_command}
build args: #{build_args}
run: #{run_command}
run args: #{run_args}
files: #{files}
"
end
parser.on(
"-h",
"--help",
"Show this help") do
puts parser
exit 0
end
end
if process_name
process_runner = Sentry::ProcessRunner.new(
process_name: process_name.as(String),
build_command: build_command,
run_command: run_command,
build_args: build_args,
run_args: run_args,
should_build: should_build,
files: files
)
process_runner.run
else
puts "🤖 Sentry error: 'name' not given and not found in shard.yml"
exit 1
end

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sentry Executable file

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