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[release-1.15] Make adapter pkg independent from brokerfilter package (…
…#8373) Make adapter independent from brokerfilter package
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| /* | ||
| Copyright 2024 The Knative 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 subscriptionsapi | ||
|
|
||
| import ( | ||
| "go.uber.org/zap" | ||
| v1 "knative.dev/eventing/pkg/apis/eventing/v1" | ||
| "knative.dev/eventing/pkg/eventfilter" | ||
| ) | ||
|
|
||
| // MaterializeSubscriptionsAPIFilter materializes a SubscriptionsAPIFilter into a runnable Filter. | ||
| func MaterializeSubscriptionsAPIFilter(logger *zap.Logger, filter v1.SubscriptionsAPIFilter) eventfilter.Filter { | ||
| var materializedFilter eventfilter.Filter | ||
| var err error | ||
| switch { | ||
| case len(filter.Exact) > 0: | ||
| // The webhook validates that this map has only a single key:value pair. | ||
| materializedFilter, err = NewExactFilter(filter.Exact) | ||
| if err != nil { | ||
| logger.Debug("Invalid exact expression", zap.Any("filters", filter.Exact), zap.Error(err)) | ||
| return nil | ||
| } | ||
| case len(filter.Prefix) > 0: | ||
| // The webhook validates that this map has only a single key:value pair. | ||
| materializedFilter, err = NewPrefixFilter(filter.Prefix) | ||
| if err != nil { | ||
| logger.Debug("Invalid prefix expression", zap.Any("filters", filter.Exact), zap.Error(err)) | ||
| return nil | ||
| } | ||
| case len(filter.Suffix) > 0: | ||
| // The webhook validates that this map has only a single key:value pair. | ||
| materializedFilter, err = NewSuffixFilter(filter.Suffix) | ||
| if err != nil { | ||
| logger.Debug("Invalid suffix expression", zap.Any("filters", filter.Exact), zap.Error(err)) | ||
| return nil | ||
| } | ||
| case len(filter.All) > 0: | ||
| materializedFilter = NewAllFilter(MaterializeFiltersList(logger, filter.All)...) | ||
| case len(filter.Any) > 0: | ||
| materializedFilter = NewAnyFilter(MaterializeFiltersList(logger, filter.Any)...) | ||
| case filter.Not != nil: | ||
| materializedFilter = NewNotFilter(MaterializeSubscriptionsAPIFilter(logger, *filter.Not)) | ||
| case filter.CESQL != "": | ||
| if materializedFilter, err = NewCESQLFilter(filter.CESQL); err != nil { | ||
| // This is weird, CESQL expression should be validated when Trigger's are created. | ||
| logger.Debug("Found an Invalid CE SQL expression", zap.String("expression", filter.CESQL)) | ||
| return nil | ||
| } | ||
| } | ||
| return materializedFilter | ||
| } | ||
|
|
||
| func CreateSubscriptionsAPIFilters(logger *zap.Logger, filters []v1.SubscriptionsAPIFilter) eventfilter.Filter { | ||
| if len(filters) == 0 { | ||
| logger.Debug("no filters provided") | ||
| return NewNoFilter() | ||
| } | ||
| return NewAllFilter(MaterializeFiltersList(logger, filters)...) | ||
| } | ||
|
|
||
| // MaterialzieFilterList allows any component that supports `SubscriptionsAPIFilter` to process them | ||
| func MaterializeFiltersList(logger *zap.Logger, filters []v1.SubscriptionsAPIFilter) []eventfilter.Filter { | ||
| materializedFilters := make([]eventfilter.Filter, 0, len(filters)) | ||
| for _, f := range filters { | ||
| f := MaterializeSubscriptionsAPIFilter(logger, f) | ||
| if f == nil { | ||
| logger.Warn("Failed to parse filter. Skipping filter.", zap.Any("filter", f)) | ||
| continue | ||
| } | ||
| materializedFilters = append(materializedFilters, f) | ||
| } | ||
| return materializedFilters | ||
| } |