9de7a07af7
The `source` command is a bash-ism and doesn't work in a strictly POSIX shell like dash, which is the /bin/sh on Debian/Ubuntu. Use `.` instead. https://en.wikipedia.org/wiki/Dot_(command)
110 lines
2.5 KiB
Ruby
110 lines
2.5 KiB
Ruby
class ServerStatus
|
|
extend Memoist
|
|
include ActiveModel::Serializers::JSON
|
|
include ActiveModel::Serializers::Xml
|
|
|
|
def serializable_hash(*options)
|
|
{
|
|
status: {
|
|
hostname: hostname,
|
|
uptime: uptime,
|
|
loadavg: loadavg,
|
|
ruby_version: RUBY_VERSION,
|
|
distro_version: distro_version,
|
|
kernel_version: kernel_version,
|
|
libvips_version: libvips_version,
|
|
ffmpeg_version: ffmpeg_version,
|
|
mkvmerge_version: mkvmerge_version,
|
|
redis_version: redis_version,
|
|
postgres_version: postgres_version,
|
|
},
|
|
postgres: {
|
|
connection_stats: postgres_connection_stats,
|
|
},
|
|
redis: {
|
|
info: redis_info,
|
|
}
|
|
}
|
|
end
|
|
|
|
concerning :InfoMethods do
|
|
def hostname
|
|
Socket.gethostname
|
|
end
|
|
|
|
def uptime
|
|
seconds = File.read("/proc/uptime").split[0].to_f
|
|
"#{seconds.seconds.in_days.round} days"
|
|
end
|
|
|
|
def loadavg
|
|
File.read("/proc/loadavg").chomp
|
|
end
|
|
|
|
def kernel_version
|
|
File.read("/proc/version").chomp
|
|
end
|
|
|
|
def distro_version
|
|
`. /etc/os-release; echo "$NAME $VERSION"`.chomp
|
|
end
|
|
|
|
def libvips_version
|
|
Vips::LIBRARY_VERSION
|
|
end
|
|
|
|
def ffmpeg_version
|
|
version = `ffmpeg -version`
|
|
version[/ffmpeg version ([0-9.]+)/, 1]
|
|
end
|
|
|
|
def mkvmerge_version
|
|
`mkvmerge --version`.chomp
|
|
end
|
|
end
|
|
|
|
concerning :RedisMethods do
|
|
def redis_info
|
|
return {} if Rails.cache.try(:redis).nil?
|
|
Rails.cache.redis.info
|
|
end
|
|
|
|
def redis_used_memory
|
|
redis_info["used_memory_rss_human"]
|
|
end
|
|
|
|
def redis_version
|
|
redis_info["redis_version"]
|
|
end
|
|
end
|
|
|
|
concerning :PostgresMethods do
|
|
def postgres_version
|
|
ApplicationRecord.connection.select_value("SELECT version()")
|
|
end
|
|
|
|
def postgres_active_connections
|
|
ApplicationRecord.connection.select_value("SELECT COUNT(*) FROM pg_stat_activity WHERE state = 'active'")
|
|
end
|
|
|
|
def postgres_connection_stats
|
|
run_query("SELECT pid, state, query_start, state_change, xact_start, backend_start, backend_type FROM pg_stat_activity ORDER BY state, query_start DESC, backend_type")
|
|
end
|
|
|
|
def run_query(query)
|
|
result = ApplicationRecord.connection.select_all(query)
|
|
serialize_result(result)
|
|
end
|
|
|
|
def serialize_result(result)
|
|
result.rows.map do |row|
|
|
row.each_with_index.map do |col, i|
|
|
[result.columns[i], col]
|
|
end.to_h
|
|
end
|
|
end
|
|
end
|
|
|
|
memoize :redis_info
|
|
end
|