About the nodestatus decision

Nodes periodically report their status to the chain:

• Normally up nodes report every 40 mins, have margin 2 cycles (80 mins) to report before they are marked down
• Farmerbot wake up the node once a day, if the node didn't report for 1 cycle (24 hours) it's marked down

Node status is determined based on:

• node.power state and target (up/down)
• updated_at timestamp if in the upInterval or standbyInterval or out of both intervals

Node status is determined as:

• up: if its updated_at in the last 80 mins and its power state/target is up (or null which means doesn't have farmerbot data).
• standby: if its updated_at in the last 24 hours and one or both of its power state/target is down
• down:
  • if its updated_at is older than 80 mins and its power state/target is up (or null)
  • if its updated_at is older than a full day

Some Definitions of used terms:

• nodeUpInterval: the duration in seconds that an UP node should report in.
• nodeStandbyInterval: the duration in seconds that a STANDBY node should report in.
• nilPower: node.power is null (is not powered by farmerbot)
• poweredOn: both node state and desired state are up
• poweredOff: both node state and desired state are down
• poweringOn: node state is down but farmerbot is trying to power it on
• poweringOff: node state is up but farmerbot is trying to power it off