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add support for custom network provider (part A) (#172)
* add support for custom network providers Signed-off-by: Kuromesi <[email protected]> * make some improvements Signed-off-by: Kuromesi <[email protected]> * log format updates Signed-off-by: Kuromesi <[email protected]> * make some logic changes Signed-off-by: Kuromesi <[email protected]> * remove roll back Signed-off-by: Kuromesi <[email protected]> * add annotation for lua.go Signed-off-by: Kuromesi <[email protected]> * store configuration when ensure routes Signed-off-by: Kuromesi <[email protected]> * store configuration when ensure routes Signed-off-by: Kuromesi <[email protected]> * make some improvements Signed-off-by: Kuromesi <[email protected]> * move TestLuaScript to custom_network_provider_test Signed-off-by: Kuromesi <[email protected]> --------- Signed-off-by: Kuromesi <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,228 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
|
|
||
| "github.com/openkruise/rollouts/api/v1alpha1" | ||
| custom "github.com/openkruise/rollouts/pkg/trafficrouting/network/customNetworkProvider" | ||
| "github.com/openkruise/rollouts/pkg/util/luamanager" | ||
| lua "github.com/yuin/gopher-lua" | ||
| "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "sigs.k8s.io/yaml" | ||
|
|
||
| utilpointer "k8s.io/utils/pointer" | ||
| ) | ||
|
|
||
| type TestCase struct { | ||
| Rollout *v1alpha1.Rollout `json:"rollout,omitempty"` | ||
| TrafficRouting *v1alpha1.TrafficRouting `json:"trafficRouting,omitempty"` | ||
| Original *unstructured.Unstructured `json:"original,omitempty"` | ||
| Expected []*unstructured.Unstructured `json:"expected,omitempty"` | ||
| } | ||
|
|
||
| // this function aims to convert testdata to lua object for debugging | ||
| // run `go run lua.go`, then this program will get all testdata and convert them into lua objects | ||
| // copy the generated objects to lua scripts and then you can start debugging your lua scripts | ||
| func main() { | ||
| err := convertTestCaseToLuaObject() | ||
| if err != nil { | ||
| fmt.Println(err) | ||
| } | ||
| } | ||
|
|
||
| func convertTestCaseToLuaObject() error { | ||
| err := filepath.Walk("./", func(path string, f os.FileInfo, err error) error { | ||
| if !strings.Contains(path, "trafficRouting.lua") { | ||
| return nil | ||
| } | ||
| if err != nil { | ||
| return fmt.Errorf("failed to walk path: %s", err.Error()) | ||
| } | ||
| dir := filepath.Dir(path) | ||
| if _, err := os.Stat(filepath.Join(dir, "testdata")); err != nil { | ||
| fmt.Printf("testdata not found in %s\n", dir) | ||
| return nil | ||
| } | ||
| err = filepath.Walk(filepath.Join(dir, "testdata"), func(path string, info os.FileInfo, err error) error { | ||
| if !info.IsDir() && filepath.Ext(path) == ".yaml" || filepath.Ext(path) == ".yml" { | ||
| fmt.Printf("--- walking path: %s ---\n", path) | ||
| err = objectToTable(path) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to convert object to table: %s", err) | ||
| } | ||
| } | ||
| return nil | ||
| }) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to walk path: %s", err.Error()) | ||
| } | ||
| return nil | ||
| }) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to walk path: %s", err) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // convert a testcase object to lua table for debug | ||
| func objectToTable(path string) error { | ||
| dir, file := filepath.Split(path) | ||
| testCase, err := getLuaTestCase(path) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to get lua testcase: %s", err) | ||
| } | ||
| uList := make(map[string]interface{}) | ||
| rollout := testCase.Rollout | ||
| trafficRouting := testCase.TrafficRouting | ||
| if rollout != nil { | ||
| steps := rollout.Spec.Strategy.Canary.Steps | ||
| for i, step := range steps { | ||
| weight := step.TrafficRoutingStrategy.Weight | ||
| if step.TrafficRoutingStrategy.Weight == nil { | ||
| weight = utilpointer.Int32(-1) | ||
| } | ||
| var canaryService string | ||
| stableService := rollout.Spec.Strategy.Canary.TrafficRoutings[0].Service | ||
| canaryService = fmt.Sprintf("%s-canary", stableService) | ||
| data := &custom.LuaData{ | ||
| Data: custom.Data{ | ||
| Labels: testCase.Original.GetLabels(), | ||
| Annotations: testCase.Original.GetAnnotations(), | ||
| Spec: testCase.Original.Object["spec"], | ||
| }, | ||
| Matches: step.TrafficRoutingStrategy.Matches, | ||
| CanaryWeight: *weight, | ||
| StableWeight: 100 - *weight, | ||
| CanaryService: canaryService, | ||
| StableService: stableService, | ||
| } | ||
| uList[fmt.Sprintf("step_%d", i)] = data | ||
| } | ||
| } else if trafficRouting != nil { | ||
| weight := trafficRouting.Spec.Strategy.Weight | ||
| if weight == nil { | ||
| weight = utilpointer.Int32(-1) | ||
| } | ||
| var canaryService string | ||
| stableService := trafficRouting.Spec.ObjectRef[0].Service | ||
| canaryService = stableService | ||
| data := &custom.LuaData{ | ||
| Data: custom.Data{ | ||
| Labels: testCase.Original.GetLabels(), | ||
| Annotations: testCase.Original.GetAnnotations(), | ||
| Spec: testCase.Original.Object["spec"], | ||
| }, | ||
| Matches: trafficRouting.Spec.Strategy.Matches, | ||
| CanaryWeight: *weight, | ||
| StableWeight: 100 - *weight, | ||
| CanaryService: canaryService, | ||
| StableService: stableService, | ||
| } | ||
| uList["steps_0"] = data | ||
| } else { | ||
| return fmt.Errorf("neither rollout nor trafficRouting defined in test case: %s", path) | ||
| } | ||
|
|
||
| objStr, err := executeLua(uList) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to execute lua: %s", err.Error()) | ||
| } | ||
| filePath := fmt.Sprintf("%s%s_obj.lua", dir, strings.Split(file, ".")[0]) | ||
| fileStream, err := os.OpenFile(filePath, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0666) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to open file: %s", err) | ||
| } | ||
| defer fileStream.Close() | ||
| header := "-- THIS IS GENERATED BY LUA.GO FOR DEBUGGING --\n" | ||
| _, err = io.WriteString(fileStream, header+objStr) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to WriteString %s", err) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func getLuaTestCase(path string) (*TestCase, error) { | ||
| yamlFile, err := os.ReadFile(path) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| luaTestCase := &TestCase{} | ||
| err = yaml.Unmarshal(yamlFile, luaTestCase) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return luaTestCase, nil | ||
| } | ||
|
|
||
| func executeLua(steps map[string]interface{}) (string, error) { | ||
| luaManager := &luamanager.LuaManager{} | ||
| unObj, err := runtime.DefaultUnstructuredConverter.ToUnstructured(&steps) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to convert to unstructured: %s", err) | ||
| } | ||
| u := &unstructured.Unstructured{Object: unObj} | ||
| script := ` | ||
| function serialize(obj, isKey) | ||
| local lua = "" | ||
| local t = type(obj) | ||
| if t == "number" then | ||
| lua = lua .. obj | ||
| elseif t == "boolean" then | ||
| lua = lua .. tostring(obj) | ||
| elseif t == "string" then | ||
| if isKey then | ||
| lua = lua .. string.format("%s", obj) | ||
| else | ||
| lua = lua .. string.format("%q", obj) | ||
| end | ||
| elseif t == "table" then | ||
| lua = lua .. "{" | ||
| for k, v in pairs(obj) do | ||
| if type(k) == "string" then | ||
| lua = lua .. serialize(k, true) .. "=" .. serialize(v, false) .. "," | ||
| else | ||
| lua = lua .. serialize(v, false) .. "," | ||
| end | ||
| end | ||
| local metatable = getmetatable(obj) | ||
| if metatable ~= nil and type(metatable.__index) == "table" then | ||
| for k, v in pairs(metatable.__index) do | ||
| if type(k) == "string" then | ||
| lua = lua .. serialize(k, true) .. "=" .. serialize(v, false) .. "," | ||
| else | ||
| lua = lua .. serialize(v, false) .. "," | ||
| end | ||
| end | ||
| end | ||
| lua = lua .. "}" | ||
| elseif t == "nil" then | ||
| return nil | ||
| else | ||
| error("can not serialize a " .. t .. " type.") | ||
| end | ||
| return lua | ||
| end | ||
| function table2string(tablevalue) | ||
| local stringtable = "steps=" .. serialize(tablevalue) | ||
| print(stringtable) | ||
| return stringtable | ||
| end | ||
| return table2string(obj) | ||
| ` | ||
| l, err := luaManager.RunLuaScript(u, script) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to run lua script: %s", err) | ||
| } | ||
| returnValue := l.Get(-1) | ||
| if returnValue.Type() == lua.LTString { | ||
| return returnValue.String(), nil | ||
| } else { | ||
| return "", fmt.Errorf("unexpected lua output type") | ||
| } | ||
| } |
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