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woodpecker/server/model/proc.go

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// Copyright 2021 Woodpecker Authors
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// Copyright 2018 Drone.IO Inc.
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//
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// 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
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// 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.
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package model
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import "fmt"
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// ProcStore persists process information to storage.
type ProcStore interface {
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ProcLoad(int64) (*Proc, error)
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ProcFind(*Build, int) (*Proc, error)
ProcChild(*Build, int, string) (*Proc, error)
ProcList(*Build) ([]*Proc, error)
ProcCreate([]*Proc) error
ProcUpdate(*Proc) error
ProcClear(*Build) error
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}
// Proc represents a process in the build pipeline.
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// swagger:model proc
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type Proc struct {
ID int64 `json:"id" xorm:"pk autoincr 'proc_id'"`
BuildID int64 `json:"build_id" xorm:"UNIQUE(s) INDEX 'proc_build_id'"`
PID int `json:"pid" xorm:"UNIQUE(s) 'proc_pid'"`
PPID int `json:"ppid" xorm:"proc_ppid"`
PGID int `json:"pgid" xorm:"proc_pgid"`
Name string `json:"name" xorm:"proc_name"`
State StatusValue `json:"state" xorm:"proc_state"`
Error string `json:"error,omitempty" xorm:"VARCHAR(500) proc_error"`
ExitCode int `json:"exit_code" xorm:"proc_exit_code"`
Started int64 `json:"start_time,omitempty" xorm:"proc_started"`
Stopped int64 `json:"end_time,omitempty" xorm:"proc_stopped"`
Machine string `json:"machine,omitempty" xorm:"proc_machine"`
Platform string `json:"platform,omitempty" xorm:"proc_platform"`
Environ map[string]string `json:"environ,omitempty" xorm:"json 'proc_environ'"`
Children []*Proc `json:"children,omitempty" xorm:"-"`
}
// TableName return database table name for xorm
func (Proc) TableName() string {
return "procs"
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}
// Running returns true if the process state is pending or running.
func (p *Proc) Running() bool {
return p.State == StatusPending || p.State == StatusRunning
}
// Failing returns true if the process state is failed, killed or error.
func (p *Proc) Failing() bool {
return p.State == StatusError || p.State == StatusKilled || p.State == StatusFailure
}
// IsParent returns true if the process is a parent process.
func (p *Proc) IsParent() bool {
return p.PPID == 0
}
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// Tree creates a process tree from a flat process list.
func Tree(procs []*Proc) ([]*Proc, error) {
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var nodes []*Proc
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for _, proc := range procs {
if proc.PPID == 0 {
nodes = append(nodes, proc)
} else {
parent, err := findNode(nodes, proc.PPID)
if err != nil {
return nil, err
}
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parent.Children = append(parent.Children, proc)
}
}
return nodes, nil
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}
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func findNode(nodes []*Proc, pid int) (*Proc, error) {
for _, node := range nodes {
if node.PID == pid {
return node, nil
}
}
return nil, fmt.Errorf("Corrupt proc structure")
}