123 lines
2.8 KiB
Go
123 lines
2.8 KiB
Go
package runtime
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import (
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"encoding/json"
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"os"
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"sync"
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"github.com/FreifunkBremen/yanic/jsontime"
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yanic "github.com/FreifunkBremen/yanic/runtime"
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"github.com/genofire/golang-lib/log"
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"github.com/FreifunkBremen/freifunkmanager/ssh"
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)
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type Nodes struct {
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List map[string]*Node `json:"nodes"`
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Current map[string]*Node `json:"-"`
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ssh *ssh.Manager
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statePath string
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iface string
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notifyFunc []func(*Node, bool)
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sync.Mutex
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}
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func NewNodes(path string, iface string, mgmt *ssh.Manager) *Nodes {
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nodes := &Nodes{
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List: make(map[string]*Node),
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Current: make(map[string]*Node),
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ssh: mgmt,
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statePath: path,
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iface: iface,
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}
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nodes.load()
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return nodes
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}
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func (nodes *Nodes) LearnNode(n *yanic.Node) {
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node := NewNode(n)
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if node == nil {
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return
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}
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node.Lastseen = jsontime.Now()
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logger := log.Log.WithField("method", "LearnNode").WithField("node_id", node.NodeID)
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nodes.Lock()
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defer nodes.Unlock()
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if lNode := nodes.List[node.NodeID]; lNode != nil {
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lNode.Lastseen = jsontime.Now()
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lNode.Stats = node.Stats
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} else {
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nodes.List[node.NodeID] = node
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nodes.notify(node, true)
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}
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if _, ok := nodes.Current[node.NodeID]; ok {
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nodes.Current[node.NodeID] = node
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nodes.notify(node, false)
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return
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}
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// session := nodes.ssh.ConnectTo(node.Address)
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result, err := nodes.ssh.RunOn(node.GetAddress(nodes.iface), "uptime")
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if err != nil {
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logger.Error("init ssh command not run", err)
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return
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}
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uptime := ssh.SSHResultToString(result)
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logger.Infof("new node with uptime: %s", uptime)
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nodes.Current[node.NodeID] = node
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nodes.notify(node, false)
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}
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func (nodes *Nodes) AddNotify(f func(*Node, bool)) {
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nodes.notifyFunc = append(nodes.notifyFunc, f)
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}
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func (nodes *Nodes) notify(node *Node, system bool) {
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for _, f := range nodes.notifyFunc {
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f(node, system)
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}
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}
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func (nodes *Nodes) UpdateNode(node *Node) {
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if node == nil {
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log.Log.Warn("no new node to update")
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return
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}
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nodes.Lock()
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defer nodes.Unlock()
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if n, ok := nodes.List[node.NodeID]; ok {
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go node.SSHUpdate(nodes.ssh, nodes.iface, n)
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}
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nodes.List[node.NodeID] = node
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nodes.notify(node, true)
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}
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func (nodes *Nodes) Updater() {
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nodes.Lock()
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defer nodes.Unlock()
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for nodeid, node := range nodes.List {
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if n, ok := nodes.Current[nodeid]; ok {
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go node.SSHUpdate(nodes.ssh, nodes.iface, n)
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}
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}
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log.Log.Debug("updater per ssh runs")
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}
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func (nodes *Nodes) load() {
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if f, err := os.Open(nodes.statePath); err == nil { // transform data to legacy meshviewer
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if err = json.NewDecoder(f).Decode(nodes); err == nil {
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log.Log.Infof("loaded %d nodes", len(nodes.List))
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} else {
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log.Log.Error("failed to unmarshal nodes:", err)
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}
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} else {
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log.Log.Error("failed to load cached nodes:", err)
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}
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}
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func (nodes *Nodes) Saver() {
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nodes.Lock()
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yanic.SaveJSON(nodes, nodes.statePath)
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nodes.Unlock()
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log.Log.Debug("saved state file")
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}
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