github.com/abayer/test-infra@v0.0.5/velodrome/transform/plugins/fake_open_wrapper.go (about)

     1  /*
     2  Copyright 2017 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package plugins
    18  
    19  import (
    20  	"container/heap"
    21  
    22  	"k8s.io/test-infra/velodrome/sql"
    23  )
    24  
    25  // EventTimeHeap is a min-heap on Event creation time
    26  type EventTimeHeap []sql.IssueEvent
    27  
    28  var _ heap.Interface = &EventTimeHeap{}
    29  
    30  func (t EventTimeHeap) Len() int           { return len(t) }
    31  func (t EventTimeHeap) Swap(i, j int)      { t[i], t[j] = t[j], t[i] }
    32  func (t EventTimeHeap) Less(i, j int) bool { return t[i].EventCreatedAt.Before(t[j].EventCreatedAt) }
    33  
    34  // Push adds event to the heap
    35  func (t *EventTimeHeap) Push(x interface{}) {
    36  	*t = append(*t, x.(sql.IssueEvent))
    37  }
    38  
    39  // Pop retrieves the last added event
    40  func (t *EventTimeHeap) Pop() interface{} {
    41  	old := *t
    42  	n := len(old)
    43  	x := old[n-1]
    44  	*t = old[0 : n-1]
    45  	return x
    46  }
    47  
    48  // FakeOpenPluginWrapper sends new "opened" event to ReceiveEvent
    49  type FakeOpenPluginWrapper struct {
    50  	// Min-heap of "opened" events to inject
    51  	openEvents  EventTimeHeap
    52  	alreadyOpen map[string]bool
    53  	// Actual plugin
    54  	plugin Plugin
    55  }
    56  
    57  var _ Plugin = &FakeOpenPluginWrapper{}
    58  
    59  // NewFakeOpenPluginWrapper is the constructor for FakeOpenPluginWrapper
    60  func NewFakeOpenPluginWrapper(plugin Plugin) *FakeOpenPluginWrapper {
    61  	return &FakeOpenPluginWrapper{
    62  		plugin:      plugin,
    63  		alreadyOpen: map[string]bool{},
    64  	}
    65  }
    66  
    67  // ReceiveIssue creates a fake "opened" event
    68  func (o *FakeOpenPluginWrapper) ReceiveIssue(issue sql.Issue) []Point {
    69  	if _, ok := o.alreadyOpen[issue.ID]; !ok {
    70  		// Create/Add fake "opened" events
    71  		heap.Push(&o.openEvents, sql.IssueEvent{
    72  			Event:          "opened",
    73  			IssueID:        issue.ID,
    74  			Actor:          &issue.User,
    75  			EventCreatedAt: issue.IssueCreatedAt,
    76  		})
    77  		o.alreadyOpen[issue.ID] = true
    78  	}
    79  
    80  	return o.plugin.ReceiveIssue(issue)
    81  }
    82  
    83  // ReceiveIssueEvent injects an extra "opened" event before calling plugin.ReceiveIssueEvent()
    84  func (o *FakeOpenPluginWrapper) ReceiveIssueEvent(event sql.IssueEvent) []Point {
    85  	points := []Point{}
    86  
    87  	// Inject extra "opened" events. Inject "opened" before other events at the same time.
    88  	for o.openEvents.Len() > 0 && !o.openEvents[0].EventCreatedAt.After(event.EventCreatedAt) {
    89  		points = append(points, o.plugin.ReceiveIssueEvent(heap.Pop(&o.openEvents).(sql.IssueEvent))...)
    90  	}
    91  
    92  	return append(points, o.plugin.ReceiveIssueEvent(event)...)
    93  }
    94  
    95  // ReceiveComment is a wrapper on plugin.ReceiveComment()
    96  func (o *FakeOpenPluginWrapper) ReceiveComment(comment sql.Comment) []Point {
    97  	return o.plugin.ReceiveComment(comment)
    98  }