Transaction Flow

Simplified

• User creates Estimate
• User confirms estimate
• User sends to coin address

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• Check list of Unspent transactions every X seconds
• Look up wallet address for unspent, and confirm amount VS database entry estimate (+/- ?? %)
• Create new NavTech RAW transaction, sending to the 'To' address in the database
• Updated database to say 'Sent'

Detailed

• Setup the process handler (runs the cron job and manages the top level program flow).
• Run Pre flight to determine if we can process.
• Check the daemon is responsive.
• Check the block height is within X blocks of the highest block seen.
• Check the wallet is unlocked.
• Check if we can communicate with at least 1 NavTech Server.
• If any of the preflight checks fail, we pause the service and write to the database a flag to stop new transactions being submitted.
• Retrieve and format the pending transactions
• Get the unspent transactions and start to build the object we need to create the NavTech transaction
• Loop through each unspent
• Look it up by address in the database
• Get the output currency and output address and attach that to the unspent data
• Push successful transactions into a successfully prepared object
• Push any unsuccessful ones into a failed object
• Processing the successfully prepared transactions
• Looping through each of the prepared transactions and creating the anontx with the nav daemon
• If it was successfully committed to the blockchain update the database
• Otherwise, push it into the failed transaction
• Process any which failed to prepare or failed to send
• Reject coins to sender
• Update the database