add deps rake tasks

lib/tasks/deps.rake

@@ -0,0 +1,104 @@
+# frozen_string_literal: true
+
+require 'pathname'
+
+DATA_DIR = Pathname.new('data')
+POSTGRES_DIR = DATA_DIR / 'postgres'
+POSTGRES_CONF_FILE = POSTGRES_DIR / 'postgresql.conf'
+POSTGRES_SOCKET_FILE = POSTGRES_DIR / '.s.PGSQL.5432'
+POSTGRES_PID_FILE = POSTGRES_DIR / 'postmaster.pid'
+REDIS_DIR = DATA_DIR / 'redis'
+REDIS_PID_FILE = REDIS_DIR / 'redis-dev.pid'
+
+def get_pid(pid_file)
+  return false unless File.file?(pid_file)
+  pid = File.read(pid_file).to_i
+
+  Process.kill(0, pid)
+  pid
+rescue Errno::ESRCH
+  nil
+end
+
+def postgres_running?
+  get_pid POSTGRES_PID_FILE
+end
+
+directory REDIS_DIR.to_s
+
+namespace :deps do
+  task start: ['postgres:start', 'redis:start']
+  task stop: ['postgres:stop', 'redis:stop']
+
+  namespace :postgres do
+    namespace :setup do
+      task all: [POSTGRES_DIR.to_s]
+
+      file POSTGRES_DIR.to_s do
+        if POSTGRES_CONF_FILE.exist?
+          puts 'Postgres conf exists, skipping initdb'
+          next
+        end
+        sh %(printf '%s\\n' pg_ctl -D data/postgres initdb -o '-U mastodon --auth-host=trust')
+      end
+
+      task configure: [POSTGRES_DIR.to_s] do
+        next if File.foreach(POSTGRES_CONF_FILE).detect? { |line| line == /^unix_socket_directories = \.\s*$/ }
+
+        POSTGRES_CONF_FILE.open('at') do |f|
+          f.write("\n", PG_SOCKET_DIRECTORIES_LINE, "\n")
+        end
+      end
+    end
+
+    task start: ['setup:all'] do
+      if (pid = get_pid POSTGRES_PID_FILE)
+        puts "Postgres is running (pid #{pid})!"
+        next
+      end
+
+      puts 'Starting postgres...'
+      puts '=========='
+      sh %(pg_ctl -D ./data/postgres start)
+      puts '=========='
+    end
+
+    task :stop do
+      unless (pid = get_pid POSTGRES_PID_FILE)
+        puts "Postgres isn't running!"
+        next
+      end
+
+      puts "Stopping Postgres (pid #{pid})...\n=========="
+      sh %(pg_ctl -D ./data/postgres stop)
+      puts '=========='
+    end
+  end
+
+  namespace :redis do
+    task init: [REDIS_DIR.to_s] do
+    end
+
+    task start: [:init] do
+      if (pid = get_pid REDIS_PID_FILE)
+        puts "Redis is running (pid #{pid})!"
+        next
+      end
+
+      puts 'Starting redis...'
+      puts '=========='
+      sh %(redis-server redis-dev.conf)
+      puts '=========='
+    end
+
+    task :stop do
+      unless (pid = get_pid REDIS_PID_FILE)
+        puts "Redis isn't running!"
+        next
+      end
+
+      puts "Stopping Redis (pid #{pid})...\n=========="
+      Process.kill(:TERM, pid)
+    end
+  end
+end