68 lines
2.2 KiB
Crystal
68 lines
2.2 KiB
Crystal
# Mentorenwahl: A fullstack application for assigning mentors to students based on their whishes.
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# Copyright (C) 2022 Dominic Grimm
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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require "service"
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require "log"
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require "retriable"
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module Backend
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# Backend runner
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class Runner < Service::Runner
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Log = ::Log.for(self)
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# Service starters
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def starters : Array(Service::Starter)
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[
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Service::SynchronousStarter.new([
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Api::Service.new.as(Service),
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Worker::Service.new.as(Service),
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] of Service).as(Service::Starter),
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]
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end
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# Run the backend
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def run : self
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Signal::INT.trap { exit }
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Signal::TERM.trap { exit }
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{% if flag?(:development) %}
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Log.warn { "Backend is running in development mode! Do not use this in production!" }
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{% end %}
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Log.info { "Checking if DB schema is up to date..." }
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Retriable.retry(backoff: false, base_interval: 10.seconds, multiplier: 1.0) do
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case Retriable.retry(on: DB::ConnectionRefused, backoff: false) do
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Db.schema_up_to_date_compare
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end
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when nil
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Log.fatal { "No database schema is applied. Please run `bash scripts/micrate.sh up` urgently!" }
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raise Exception.new
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when -1
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Log.warn { "Database schema is not up to date. Please run `bash scripts/micrate.sh up`." }
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when 0
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Log.info { "Database schema is up to date." }
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else
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Log.warn { "Database schema is maybe up to date but not consistent. Please run `bash scripts/micrate.sh up` to be safe." }
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end
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end
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Log.info { "Starting services..." }
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super
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end
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end
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end
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