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-- | Node clock skew in seconds

nodeMaxClockSkew :: Int

nodeMaxClockSkew = 150

-- * A few common errors for confd

confdErrorArgument :: Int

confdErrorArgument = 3

confdErrorInternal :: Int

confdErrorInternal = 2

confdErrorUnknownEntry :: Int

confdErrorUnknownEntry = 1

-- | Each request is "salted" by the current timestamp.

--

-- This constant decides how many seconds of skew to accept.

--

-- TODO: make this a default and allow the value to be more

-- configurable

confdMaxClockSkew :: Int

confdMaxClockSkew = 2 * nodeMaxClockSkew

-- | When we haven't reloaded the config for more than this amount of

-- seconds, we force a test to see if inotify is betraying us. Using a

-- prime number to ensure we get less chance of 'same wakeup' with

-- other processes.

confdConfigReloadTimeout :: Int

confdConfigReloadTimeout = 17

-- | If we receive more than one update in this amount of

-- microseconds, we move to polling every RATELIMIT seconds, rather

-- than relying on inotify, to be able to serve more requests.

confdConfigReloadRatelimit :: Int

confdConfigReloadRatelimit = 250000

-- | Magic number prepended to all confd queries.

--

-- This allows us to distinguish different types of confd protocols

-- and handle them. For example by changing this we can move the whole

-- payload to be compressed, or move away from json.

confdMagicFourcc :: String

confdMagicFourcc = "plj0"

-- | By default a confd request is sent to the minimum between this

-- number and all MCs. 6 was chosen because even in the case of a

-- disastrous 50% response rate, we should have enough answers to be

-- able to compare more than one.

confdDefaultReqCoverage :: Int

confdDefaultReqCoverage = 6

-- | Timeout in seconds to expire pending query request in the confd

-- client library. We don't actually expect any answer more than 10

-- seconds after we sent a request.

confdClientExpireTimeout :: Int

confdClientExpireTimeout = 10