按键和值范围和计数

Question

我正在尝试在我的地图上进行测距[string]地图[string]界面{}

下面是我的代码：

var marshallJSON Level
var itemCountAll int64
var itemCountPending int64
var itemCountError int64
var itemCountWarning int64
var itemCountCritical int64
var m []*bson.M

for k, value := range modules {
    for _ , level := range value {
        if level == "err" {
            itemCountError += 1
        }
        if level == "warning" {
            itemCountWarning += 1
        }
        if level == "pending" {
            itemCountPending += 1
        }
    }
    itemCountCritical = itemCountError + itemCountWarning
    itemCountAll = itemCountPending + itemCountCritical
    marshallJSON = Level{All: itemCountAll, Pending: itemCountPending, Critical: itemCountCritical}
    if k != "null" {
        m = append(m, &bson.M{"module": k, "nb_nodes": marshallJSON})
    }
}

我的变量 modules 中包含的值的示例：

{"Module_one":{"host_one":"pending","host_two":"pending"},"Module_two":{"host_three":"err","host_four":"warning","host_five":"pending"}}

我得到这个输出：

[{"module":"Module_one","nb_nodes":{"all":2,"pending":2,"critical":0}},{"module":"Module_two","nb_nodes":{"all":5,"pending":3,"critical":2}}]

我想要这个输出：

[{"module":"Module_one","nb_nodes":{"all":2,"pending":2,"critical":0}},{"module":"Module_two","nb_nodes":{"all":3,"pending":1,"critical":2}}]

问题在于它采用为先前模块计算的值并将它们相加
我的问题是如何计算每个模块的状态数？

Answer 1

您必须在开始下一次迭代之前重置计数器，因此外循环的每次迭代都不会包括之前的模块：

for k, value := range modules {
    itemCountError, itemCountWarning, itemCountPending, itemCountCritical,
        itemCountAll = 0, 0, 0, 0, 0

    // ...
}

或者更好的是，只需在循环内声明计数器，这样它们在每次迭代中总是从 0 开始：

for k, value := range modules {
    var itemCountError, itemCountWarning, itemCountPending,
        itemCountCritical, itemCountAll int64

    // ...
}

还要注意bson.M是一个地图，你不需要指向地图的指针（），所以使用：

var m []bson.M

按键和值范围和计数

Range and count by key and value

if-statement

hashmap

range

go