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76 changes: 76 additions & 0 deletions
76
service/worker/scanner/executions/common/invariant_mock.go
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132 changes: 132 additions & 0 deletions
132
service/worker/scanner/executions/invariants/invariantManager.go
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| // The MIT License (MIT) | ||
| // | ||
| // Copyright (c) 2017-2020 Uber Technologies Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| // SOFTWARE. | ||
|
|
||
| package invariants | ||
|
|
||
| import ( | ||
| "github.com/uber/cadence/service/worker/scanner/executions/common" | ||
| ) | ||
|
|
||
| type ( | ||
| invariantManager struct { | ||
| invariants []common.Invariant | ||
| types []common.InvariantType | ||
| } | ||
| ) | ||
|
|
||
| // NewInvariantManager handles running a collection of invariants according to the invariant collection provided. | ||
| // InvariantManager takes care of ensuring invariants are run in their correct dependency order. | ||
| func NewInvariantManager( | ||
| invariantCollections []common.InvariantCollection, | ||
| pr common.PersistenceRetryer, | ||
| ) common.InvariantManager { | ||
| manager := &invariantManager{} | ||
| manager.invariants, manager.types = getSortedInvariants(invariantCollections, pr) | ||
| return manager | ||
| } | ||
|
|
||
| // RunChecks runs the Check method of all managed invariants. | ||
| // Stops on the first check which indicates corruption or failure. | ||
| // Only returns CheckResultTypeHealthy if all managed checks indicate healthy. | ||
| func (i *invariantManager) RunChecks(execution common.Execution) common.ManagerCheckResult { | ||
| resources := &common.InvariantResourceBag{} | ||
| var checkResults []common.CheckResult | ||
| for _, iv := range i.invariants { | ||
| checkResult := iv.Check(execution, resources) | ||
| checkResults = append(checkResults, checkResult) | ||
| if checkResult.CheckResultType != common.CheckResultTypeHealthy { | ||
| return common.ManagerCheckResult{ | ||
| CheckResultType: checkResult.CheckResultType, | ||
| CheckResults: checkResults, | ||
| } | ||
| } | ||
| } | ||
| return common.ManagerCheckResult{ | ||
| CheckResultType: common.CheckResultTypeHealthy, | ||
| CheckResults: checkResults, | ||
| } | ||
| } | ||
|
|
||
| // RunFixes runs the Fix method of all managed invariants. | ||
| // Stops on the first fix which indicates a failure. | ||
| // Returns FixResultTypeSkipped if all invariants where skipped, if at least one was fixed returns FixResultTypeFixed. | ||
| func (i *invariantManager) RunFixes(execution common.Execution) common.ManagerFixResult { | ||
| resources := &common.InvariantResourceBag{} | ||
| encounteredFix := false | ||
| var fixResults []common.FixResult | ||
| for _, iv := range i.invariants { | ||
| fixResult := iv.Fix(execution, resources) | ||
| fixResults = append(fixResults, fixResult) | ||
| if fixResult.FixResultType == common.FixResultTypeFailed { | ||
| return common.ManagerFixResult{ | ||
| FixResultType: common.FixResultTypeFailed, | ||
| FixResults: fixResults, | ||
| } | ||
| } | ||
| if fixResult.FixResultType == common.FixResultTypeFixed { | ||
| encounteredFix = true | ||
| } | ||
| } | ||
| if encounteredFix { | ||
| return common.ManagerFixResult{ | ||
| FixResultType: common.FixResultTypeFixed, | ||
| FixResults: fixResults, | ||
| } | ||
| } | ||
| return common.ManagerFixResult{ | ||
| FixResultType: common.FixResultTypeSkipped, | ||
| FixResults: fixResults, | ||
| } | ||
| } | ||
|
|
||
| // InvariantTypes returns sorted list of all invariants that manager will run. | ||
| func (i *invariantManager) InvariantTypes() []common.InvariantType { | ||
| return i.types | ||
| } | ||
|
|
||
| func getSortedInvariants( | ||
| collections []common.InvariantCollection, | ||
| pr common.PersistenceRetryer, | ||
| ) ([]common.Invariant, []common.InvariantType) { | ||
| var ivs []common.Invariant | ||
| for _, collection := range collections { | ||
| switch collection { | ||
| case common.InvariantCollectionHistory: | ||
| ivs = append(ivs, getHistoryCollection(pr)...) | ||
| case common.InvariantCollectionMutableState: | ||
| ivs = append(ivs, getMutableStateCollection(pr)...) | ||
| } | ||
| } | ||
| types := make([]common.InvariantType, len(ivs), len(ivs)) | ||
| for i, iv := range ivs { | ||
| types[i] = iv.InvariantType() | ||
| } | ||
| return ivs, types | ||
| } | ||
|
|
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| func getHistoryCollection(pr common.PersistenceRetryer) []common.Invariant { | ||
| return []common.Invariant{NewHistoryExists(pr), NewValidFirstEvent(pr)} | ||
| } | ||
|
|
||
| func getMutableStateCollection(pr common.PersistenceRetryer) []common.Invariant { | ||
| return []common.Invariant{NewOpenCurrentExecution(pr)} | ||
| } |
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