本文整理汇总了Golang中github.com/hashicorp/nomad/nomad/state.StateSnapshot.NodeByID方法的典型用法代码示例。如果您正苦于以下问题：Golang StateSnapshot.NodeByID方法的具体用法？Golang StateSnapshot.NodeByID怎么用？Golang StateSnapshot.NodeByID使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/hashicorp/nomad/nomad/state.StateSnapshot的用法示例。
在下文中一共展示了StateSnapshot.NodeByID方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: evaluateNodePlan
// evaluateNodePlan is used to evalute the plan for a single node,
// returning if the plan is valid or if an error is encountered
func evaluateNodePlan(snap *state.StateSnapshot, plan *structs.Plan, nodeID string) (bool, error) {
// If this is an evict-only plan, it always 'fits' since we are removing things.
if len(plan.NodeAllocation[nodeID]) == 0 {
return true, nil
}
// Get the node itself
node, err := snap.NodeByID(nodeID)
if err != nil {
return false, fmt.Errorf("failed to get node '%s': %v", nodeID, err)
}
// If the node does not exist or is not ready for schduling it is not fit
// XXX: There is a potential race between when we do this check and when
// the Raft commit happens.
if node == nil || node.Status != structs.NodeStatusReady || node.Drain {
return false, nil
}
// Get the existing allocations
existingAlloc, err := snap.AllocsByNode(nodeID)
if err != nil {
return false, fmt.Errorf("failed to get existing allocations for '%s': %v", nodeID, err)
}
// Filter on alloc state
existingAlloc = structs.FilterTerminalAllocs(existingAlloc)
// Determine the proposed allocation by first removing allocations
// that are planned evictions and adding the new allocations.
proposed := existingAlloc
var remove []*structs.Allocation
if update := plan.NodeUpdate[nodeID]; len(update) > 0 {
remove = append(remove, update...)
}
if updated := plan.NodeAllocation[nodeID]; len(updated) > 0 {
for _, alloc := range updated {
remove = append(remove, alloc)
}
}
proposed = structs.RemoveAllocs(existingAlloc, remove)
proposed = append(proposed, plan.NodeAllocation[nodeID]...)
// Check if these allocations fit
fit, _, _, err := structs.AllocsFit(node, proposed, nil)
return fit, err
}