不幸的是,我们必须与第三方服务交互,而不是执行身份验证,而是依靠请求IP来确定客户端是否被授权。
这是有问题的,因为节点是由Kubernetes启动和销毁的,并且每次外部IP发生变化时。有没有办法确保在一组固定IP中选择外部IP?这样,我们可以将这些IP传达给第三方,并且它们将被授权执行请求。我只找到一种修复服务IP的方法,但是在所有单个节点的IP上都不会改变。
要明确的是,我们使用的是Google的Kubernetes Engine,因此针对该环境的自定义解决方案也可以使用。
给定Python文件的源代码,我想检测所有导入的对象.例如,鉴于此来源:
import mymod
from mymod2 import obj1, obj2, obj3
from mymod3 import aobj
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我想得到:
[('mymod2', 'obj1', 'obj2', 'obj3'), ('mymod3', 'aobj')]
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我已经尝试过这个正则表达式:
r'from (?P<mod>[_\w\d]+) import (?:(?P<obj>[_\w\d]+)[,\s]?)+'
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但我只得到第一个导入的对象:
[('mymod2', 'obj1'), ('mymod3', 'aobj')]
Run Code Online (Sandbox Code Playgroud) 我无法理解为什么功能:
repli :: [a] -> Int -> [a]
repli xs n = concatMap (replicate n) xs
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不能改写为:
repli :: [a] -> Int -> [a]
repli [] _ = []
repli (x:xs) n = (take n $ repeat x) : repli xs n
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要么
repli :: [a] -> Int -> [a]
repli [] _ = []
repli (x:xs) n = (replicate n x) : repli xs n
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Ghci抱怨说:
Couldn't match expected type ‘a’ with actual type ‘[a]’
‘a’ is a rigid …
Run Code Online (Sandbox Code Playgroud) 我想创建一个函数,String
在一个类型列表中查找[(String, Int)]
并返回Int
与之配对的函数String
.
像这样:
?> assignmentVariable "x" [("x", 3), ("y", 4), ("z", 1)]
3
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这是我尝试过的:
assignmentVariable :: String -> [(String, Int)] -> Int
assignmentVariable [] = error "list is empty"
assignmentVariable n (x:xs) = if x == n
then xs
else assignmentVariable
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我怎么写这个?
I have created a deployment and a service on Google Kubernetes Engine. These are running on Cloud Compute instances.
I need to make my k8s application reachable from other Compute instances, but not from the outside world. That is because there are some legacy instances running outside the cluster and those cannot be migrated (yet, at least).
My understanding is that a Service
makes the pod reachable from other cluster nodes, whereas an Ingress
exposes the pod to the external …
我正在学习C++,我发现了一个我不理解的行为.如果我在C中编写以下程序:
#include <stdio.h>
int main() {
char question[] = "What is your name? ";
char answer[2];
printf(question);
scanf("%ls", answer);
printf("%s\n", answer);
return 0;
}
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当我输入一个超过两个字节的名字时,答案就是胡言乱语,但即使我不确切知道原因,我也知道出了问题,它试图恢复.
相反,如果我编写这个C++程序(有点等同于前者):
#include <iostream>
using namespace std;
int main() {
char question[] = "What is your name? ";
char answer[2];
cout << question;
cin >> answer;
cout << answer << endl;
return 0;
}
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我期待类似的行为,因为我声明answer
为char数组而不是字符串(可以动态调整其大小).但是当我输入很长的东西时,它会在我输入时打印出来.一个例子:
$ ./test
What is your name? asdfa
asdfa
$ ./test
What is your name? sdhjklwertiuoxcvbnm
sdhjklwertiuoxcvbnm
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那么,这里发生了什么?作为第二个问题,当我输入更长的东西时,C中会发生什么?
编辑:只是为了澄清,我知道我可以使用 …