user_init Subroutine

  subroutine user_init(comp, importState, exportState, clock, rc)
    type(ESMF_CplComp) :: comp
    type(ESMF_State) :: importState, exportState
    type(ESMF_Clock) :: clock
    integer, intent(out) :: rc

    ! Local variables
    integer :: itemcount
    type(ESMF_ArrayBundle):: srcArraybundle, dstArraybundle
    type(ESMF_VM) :: vm

    ! Initialize return code
    rc = ESMF_SUCCESS

    print *, "User Coupler Init starting"

    call ESMF_StateGet(importState, itemcount=itemcount, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out
    print *, "Import State contains ", itemcount, " items."

    ! Need to reconcile import and export states
    call ESMF_CplCompGet(comp, vm=vm, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out
    call ESMF_StateReconcile(importState, vm=vm, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out
    call ESMF_StateReconcile(exportState, vm=vm, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out

    ! Get source ArrayBundle out of import state
    call ESMF_StateGet(importState, "srcAryBndl", srcArraybundle, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out

    ! Get destination ArrayBundle out of export state
    call ESMF_StateGet(exportState, "dstAryBndl", dstArraybundle, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out

    ! Precompute and store an ArrayBundleRedist operation
    call ESMF_ArrayBundleRedistStore(srcArrayBundle=srcArraybundle, &
      dstArrayBundle=dstArraybundle, routehandle=routehandle, rc=rc)
    if (rc/=ESMF_SUCCESS) return ! bail out
    
    print *, "User Coupler Init returning"
   
  end subroutine user_init