| // Copyright Istio Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package monitor |
| |
| import ( |
| "os" |
| "path/filepath" |
| "sort" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pilot/pkg/config/kube/crd" |
| "github.com/apache/dubbo-go-pixiu/pkg/config" |
| "github.com/apache/dubbo-go-pixiu/pkg/config/schema/collection" |
| "github.com/apache/dubbo-go-pixiu/pkg/config/schema/collections" |
| ) |
| |
| var supportedExtensions = map[string]bool{ |
| ".yaml": true, |
| ".yml": true, |
| } |
| |
| // FileSnapshot holds a reference to a file directory that contains crd |
| // config and filter criteria for which of those configs will be parsed. |
| type FileSnapshot struct { |
| root string |
| domainSuffix string |
| configTypeFilter map[config.GroupVersionKind]bool |
| } |
| |
| // NewFileSnapshot returns a snapshotter. |
| // If no types are provided in the descriptor, all Istio types will be allowed. |
| func NewFileSnapshot(root string, schemas collection.Schemas, domainSuffix string) *FileSnapshot { |
| snapshot := &FileSnapshot{ |
| root: root, |
| domainSuffix: domainSuffix, |
| configTypeFilter: make(map[config.GroupVersionKind]bool), |
| } |
| |
| ss := schemas.All() |
| if len(ss) == 0 { |
| ss = collections.Pilot.All() |
| } |
| |
| for _, k := range ss { |
| if _, ok := collections.Pilot.FindByGroupVersionKind(k.Resource().GroupVersionKind()); ok { |
| snapshot.configTypeFilter[k.Resource().GroupVersionKind()] = true |
| } |
| } |
| |
| return snapshot |
| } |
| |
| // ReadConfigFiles parses files in the root directory and returns a sorted slice of |
| // eligible model.Config. This can be used as a configFunc when creating a Monitor. |
| func (f *FileSnapshot) ReadConfigFiles() ([]*config.Config, error) { |
| var result []*config.Config |
| |
| err := filepath.Walk(f.root, func(path string, info os.FileInfo, err error) error { |
| if err != nil { |
| return err |
| } else if !supportedExtensions[filepath.Ext(path)] || (info.Mode()&os.ModeType) != 0 { |
| return nil |
| } |
| data, err := os.ReadFile(path) |
| if err != nil { |
| log.Warnf("Failed to read %s: %v", path, err) |
| return err |
| } |
| configs, err := parseInputs(data, f.domainSuffix) |
| if err != nil { |
| log.Warnf("Failed to parse %s: %v", path, err) |
| return err |
| } |
| |
| // Filter any unsupported types before appending to the result. |
| for _, cfg := range configs { |
| if !f.configTypeFilter[cfg.GroupVersionKind] { |
| continue |
| } |
| result = append(result, cfg) |
| } |
| return nil |
| }) |
| if err != nil { |
| log.Warnf("failure during filepath.Walk: %v", err) |
| } |
| |
| // Sort by the config IDs. |
| sort.Sort(byKey(result)) |
| return result, err |
| } |
| |
| // parseInputs is identical to crd.ParseInputs, except that it returns an array of config pointers. |
| func parseInputs(data []byte, domainSuffix string) ([]*config.Config, error) { |
| configs, _, err := crd.ParseInputs(string(data)) |
| |
| // Convert to an array of pointers. |
| refs := make([]*config.Config, len(configs)) |
| for i := range configs { |
| refs[i] = &configs[i] |
| refs[i].Domain = domainSuffix |
| } |
| return refs, err |
| } |
| |
| // byKey is an array of config objects that is capable or sorting by Namespace, GroupVersionKind, and Name. |
| type byKey []*config.Config |
| |
| func (rs byKey) Len() int { |
| return len(rs) |
| } |
| |
| func (rs byKey) Swap(i, j int) { |
| rs[i], rs[j] = rs[j], rs[i] |
| } |
| |
| func (rs byKey) Less(i, j int) bool { |
| return compareIds(rs[i], rs[j]) < 0 |
| } |