Generated by XState Viz: https://xstate.js.org/viz

machine.js

  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions
  // - XState (all XState exports)
  
  const fetchMachine = Machine({
    id: 'fetch',
    initial: 'inbound',
    context: {
      retries: 0
    },
    states: {
      inbound: {
        on: {
          START: 'recv'
        }
      },
      recv: {
        on: {
          lookup: 'hash',
          pass: 'hash',
          error: 'hash',
          restart: {
            target: 'recv',
            actions: assign({
              retries: (context, event) => context.retries + 1
            })
          }
        }
      },
      hash: {
        on: {
          hit: 'hit',
          miss: 'miss',
          pass: 'pass',
        }
      },
      hit: {
        on: {
          deliver: 'deliver',
          pass: 'hash',
          error: 'error',
          restart: {
            target: 'recv',
            actions: assign({
              retries: (context, event) => context.retries + 1
            })
          }
        }
      },
      miss: {
        on: {
          fetch: 'fetch',
          pass: 'pass',
          deliver_stale: 'deliver',
          error: 'error',
        }
      },
      pass: {
        on: {
          pass: 'fetch',
          error: 'error',
        }
      },
      fetch: {
        on: {
          deliver: 'deliver',
          deliver_stale: 'deliver',
          pass: 'deliver',
          error: 'error',
          restart: {
            target: 'recv',
            actions: assign({
              retries: (context, event) => context.retries + 1
            })
          }
        }
      },
      deliver: {
        on: {
          deliver: 'log',
          restart: {
            target: 'recv',
            actions: assign({
              retries: (context, event) => context.retries + 1
            })
          }
        }
      },
      log: {
        type: 'final'
      },
      error: {
        on: {
          deliver: 'deliver',
          deliver_stale: 'deliver',
          restart: {
            target: 'recv',
            actions: assign({
              retries: (context, event) => context.retries + 1
            })
          }
        }
      },
    }
  });