| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package jobmgr |
| 4 | |
| 5 | import ( |
| 6 | "context" |
| 7 | "sync" |
| 8 | |
| 9 | "github.com/netdata/netdata/go/plugins/plugin/framework/confgroup" |
| 10 | ) |
| 11 | |
| 12 | func newDiscoveredConfigsCache() *discoveredConfigs { |
| 13 | return &discoveredConfigs{ |
| 14 | items: make(map[string]map[uint64]confgroup.Config), |
| 15 | } |
| 16 | } |
| 17 | |
| 18 | func newRunningJobsCache() *runningJobs { |
| 19 | return &runningJobs{ |
| 20 | mux: sync.Mutex{}, |
| 21 | items: make(map[string]runtimeJob), |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | func newRetryingTasksCache() *retryingTasks { |
| 26 | return &retryingTasks{ |
| 27 | items: make(map[string]*retryTask), |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | type ( |
| 32 | discoveredConfigs struct { |
| 33 | // [Source][Hash] |
| 34 | items map[string]map[uint64]confgroup.Config |
| 35 | } |
| 36 | |
| 37 | runningJobs struct { |
| 38 | mux sync.Mutex |
| 39 | // [cfg.FullName()] |
| 40 | items map[string]runtimeJob |
| 41 | } |
| 42 | |
| 43 | retryingTasks struct { |
| 44 | // retryingTasks is intentionally lock-free. All access must remain serialized |
| 45 | // through manager-owned command flow and synchronous dyncfg handler callbacks. |
| 46 | // [cfg.UID()] |
| 47 | items map[string]*retryTask |
| 48 | } |
| 49 | retryTask struct { |
| 50 | cancel context.CancelFunc |
| 51 | } |
| 52 | ) |
| 53 | |
| 54 | func (c *discoveredConfigs) add(group *confgroup.Group) (added, removed []confgroup.Config) { |
| 55 | cfgs, ok := c.items[group.Source] |
| 56 | if !ok { |
| 57 | if len(group.Configs) == 0 { |
| 58 | return nil, nil |
| 59 | } |
| 60 | cfgs = make(map[uint64]confgroup.Config) |
| 61 | c.items[group.Source] = cfgs |
| 62 | } |
| 63 | |
| 64 | seen := make(map[uint64]bool) |
| 65 | |
| 66 | for _, cfg := range group.Configs { |
| 67 | hash := cfg.Hash() |
| 68 | seen[hash] = true |
| 69 | |
| 70 | if _, ok := cfgs[hash]; ok { |
| 71 | continue |
| 72 | } |
| 73 | |
| 74 | cfgs[hash] = cfg |
| 75 | added = append(added, cfg) |
| 76 | } |
| 77 | |
| 78 | for hash, cfg := range cfgs { |
| 79 | if !seen[hash] { |
| 80 | delete(cfgs, hash) |
| 81 | removed = append(removed, cfg) |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | if len(cfgs) == 0 { |
| 86 | delete(c.items, group.Source) |
| 87 | } |
| 88 | |
| 89 | return added, removed |
| 90 | } |
| 91 | |
| 92 | func (c *runningJobs) lock() { |
| 93 | c.mux.Lock() |
| 94 | } |
| 95 | func (c *runningJobs) unlock() { |
| 96 | c.mux.Unlock() |
| 97 | } |
| 98 | func (c *runningJobs) add(fullName string, job runtimeJob) { |
| 99 | c.items[fullName] = job |
| 100 | } |
| 101 | func (c *runningJobs) remove(fullName string) { |
| 102 | delete(c.items, fullName) |
| 103 | } |
| 104 | func (c *runningJobs) lookup(fullName string) (runtimeJob, bool) { |
| 105 | j, ok := c.items[fullName] |
| 106 | return j, ok |
| 107 | } |
| 108 | func (c *runningJobs) snapshot() []runtimeJob { |
| 109 | c.mux.Lock() |
| 110 | defer c.mux.Unlock() |
| 111 | |
| 112 | jobs := make([]runtimeJob, 0, len(c.items)) |
| 113 | for _, job := range c.items { |
| 114 | jobs = append(jobs, job) |
| 115 | } |
| 116 | return jobs |
| 117 | } |
| 118 | |
| 119 | func (c *retryingTasks) add(cfg confgroup.Config, retry *retryTask) { |
| 120 | c.items[cfg.UID()] = retry |
| 121 | } |
| 122 | func (c *retryingTasks) remove(cfg confgroup.Config) { |
| 123 | if v, ok := c.lookup(cfg); ok { |
| 124 | v.cancel() |
| 125 | } |
| 126 | delete(c.items, cfg.UID()) |
| 127 | } |
| 128 | func (c *retryingTasks) lookup(cfg confgroup.Config) (*retryTask, bool) { |
| 129 | v, ok := c.items[cfg.UID()] |
| 130 | return v, ok |
| 131 | } |