tiny-rdm/backend/storage/connections.go

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package storage
import (
"errors"
"gopkg.in/yaml.v3"
"sync"
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"tinyrdm/backend/consts"
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"tinyrdm/backend/types"
sliceutil "tinyrdm/backend/utils/slice"
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)
type ConnectionsStorage struct {
storage *localStorage
mutex sync.Mutex
}
func NewConnections() *ConnectionsStorage {
return &ConnectionsStorage{
storage: NewLocalStore("connections.yaml"),
}
}
func (c *ConnectionsStorage) defaultConnections() types.Connections {
return types.Connections{}
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}
func (c *ConnectionsStorage) defaultConnectionItem() types.ConnectionConfig {
return types.ConnectionConfig{
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Name: "",
Addr: "127.0.0.1",
Port: 6379,
Username: "",
Password: "",
DefaultFilter: "*",
KeySeparator: ":",
ConnTimeout: 60,
ExecTimeout: 60,
DBFilterType: "none",
DBFilterList: []int{},
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LoadSize: consts.DEFAULT_LOAD_SIZE,
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MarkColor: "",
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Sentinel: types.ConnectionSentinel{
Master: "mymaster",
},
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}
}
func (c *ConnectionsStorage) getConnections() (ret types.Connections) {
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b, err := c.storage.Load()
ret = c.defaultConnections()
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if err != nil {
return
}
if err = yaml.Unmarshal(b, &ret); err != nil {
ret = c.defaultConnections()
return
}
if len(ret) <= 0 {
ret = c.defaultConnections()
}
//if !sliceutil.AnyMatch(ret, func(i int) bool {
// return ret[i].GroupName == ""
//}) {
// ret = append(ret, c.defaultConnections()...)
//}
return
}
// GetConnections get all store connections from local
func (c *ConnectionsStorage) GetConnections() (ret types.Connections) {
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return c.getConnections()
}
// GetConnectionsFlat get all store connections from local flat(exclude group level)
func (c *ConnectionsStorage) GetConnectionsFlat() (ret types.Connections) {
conns := c.getConnections()
for _, conn := range conns {
if conn.Type == "group" {
ret = append(ret, conn.Connections...)
} else {
ret = append(ret, conn)
}
}
return
}
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// GetConnection get connection by name
func (c *ConnectionsStorage) GetConnection(name string) *types.Connection {
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conns := c.getConnections()
var findConn func(string, string, types.Connections) *types.Connection
findConn = func(name, groupName string, conns types.Connections) *types.Connection {
for i, conn := range conns {
if conn.Type != "group" {
if conn.Name == name {
conns[i].Group = groupName
return &conns[i]
}
} else {
if ret := findConn(name, conn.Name, conn.Connections); ret != nil {
return ret
}
}
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}
return nil
}
return findConn(name, "", conns)
}
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// GetGroup get one connection group by name
func (c *ConnectionsStorage) GetGroup(name string) *types.Connection {
conns := c.getConnections()
for i, conn := range conns {
if conn.Type == "group" && conn.Name == name {
return &conns[i]
}
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}
return nil
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}
func (c *ConnectionsStorage) saveConnections(conns types.Connections) error {
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b, err := yaml.Marshal(&conns)
if err != nil {
return err
}
if err = c.storage.Store(b); err != nil {
return err
}
return nil
}
// CreateConnection create new connection
func (c *ConnectionsStorage) CreateConnection(param types.ConnectionConfig) error {
c.mutex.Lock()
defer c.mutex.Unlock()
conn := c.GetConnection(param.Name)
if conn != nil {
return errors.New("duplicated connection name")
}
conns := c.getConnections()
var group *types.Connection
if len(param.Group) > 0 {
for i, conn := range conns {
if conn.Type == "group" && conn.Name == param.Group {
group = &conns[i]
break
}
}
}
if group != nil {
group.Connections = append(group.Connections, types.Connection{
ConnectionConfig: param,
})
} else {
if len(param.Group) > 0 {
// no group matched, create new group
conns = append(conns, types.Connection{
Type: "group",
Connections: types.Connections{
types.Connection{
ConnectionConfig: param,
},
},
})
} else {
conns = append(conns, types.Connection{
ConnectionConfig: param,
})
}
}
return c.saveConnections(conns)
}
// UpdateConnection update existing connection by name
func (c *ConnectionsStorage) UpdateConnection(name string, param types.ConnectionConfig) error {
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c.mutex.Lock()
defer c.mutex.Unlock()
conns := c.getConnections()
var updated bool
var retrieve func(types.Connections, string, types.ConnectionConfig) error
retrieve = func(conns types.Connections, name string, param types.ConnectionConfig) error {
for i, conn := range conns {
if conn.Type != "group" {
if name != param.Name && conn.Name == param.Name {
return errors.New("duplicated connection name")
} else if conn.Name == name && !updated {
conns[i] = types.Connection{
ConnectionConfig: param,
}
updated = true
}
} else {
if err := retrieve(conn.Connections, name, param); err != nil {
return err
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}
}
}
return nil
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}
err := retrieve(conns, name, param)
if err != nil {
return err
}
if !updated {
return errors.New("connection not found")
}
return c.saveConnections(conns)
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}
// DeleteConnection remove special connection
func (c *ConnectionsStorage) DeleteConnection(name string) error {
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c.mutex.Lock()
defer c.mutex.Unlock()
conns := c.getConnections()
var updated bool
for i, conn := range conns {
if conn.Type == "group" {
for j, subConn := range conn.Connections {
if subConn.Name == name {
conns[i].Connections = append(conns[i].Connections[:j], conns[i].Connections[j+1:]...)
updated = true
break
}
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}
} else if conn.Name == name {
conns = append(conns[:i], conns[i+1:]...)
updated = true
break
}
if updated {
break
}
}
if !updated {
return errors.New("no match connection")
}
return c.saveConnections(conns)
}
// SaveSortedConnection save connection after sort
func (c *ConnectionsStorage) SaveSortedConnection(sortedConns types.Connections) error {
c.mutex.Lock()
defer c.mutex.Unlock()
conns := c.GetConnectionsFlat()
takeConn := func(name string) (types.Connection, bool) {
idx, ok := sliceutil.Find(conns, func(i int) bool {
return conns[i].Name == name
})
if ok {
ret := conns[idx]
conns = append(conns[:idx], conns[idx+1:]...)
return ret, true
}
return types.Connection{}, false
}
var replaceConn func(connections types.Connections) types.Connections
replaceConn = func(cons types.Connections) types.Connections {
var newConns types.Connections
for _, conn := range cons {
if conn.Type == "group" {
newConns = append(newConns, types.Connection{
ConnectionConfig: types.ConnectionConfig{
Name: conn.Name,
},
Type: "group",
Connections: replaceConn(conn.Connections),
})
} else {
if foundConn, ok := takeConn(conn.Name); ok {
newConns = append(newConns, foundConn)
}
}
}
return newConns
}
conns = replaceConn(sortedConns)
return c.saveConnections(conns)
}
// CreateGroup create a new group
func (c *ConnectionsStorage) CreateGroup(name string) error {
c.mutex.Lock()
defer c.mutex.Unlock()
conns := c.getConnections()
for _, conn := range conns {
if conn.Type == "group" && conn.Name == name {
return errors.New("duplicated group name")
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}
}
conns = append(conns, types.Connection{
ConnectionConfig: types.ConnectionConfig{
Name: name,
},
Type: "group",
})
return c.saveConnections(conns)
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}
// RenameGroup rename group
func (c *ConnectionsStorage) RenameGroup(name, newName string) error {
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c.mutex.Lock()
defer c.mutex.Unlock()
groupIndex := -1
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conns := c.getConnections()
for i, conn := range conns {
if conn.Type == "group" {
if conn.Name == newName {
return errors.New("duplicated group name")
} else if conn.Name == name {
groupIndex = i
}
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}
}
if groupIndex == -1 {
return errors.New("group not found")
}
conns[groupIndex].Name = newName
return c.saveConnections(conns)
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}
// DeleteGroup remove specified group, include all connections under it
func (c *ConnectionsStorage) DeleteGroup(group string, includeConnection bool) error {
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c.mutex.Lock()
defer c.mutex.Unlock()
conns := c.getConnections()
for i, conn := range conns {
if conn.Type == "group" && conn.Name == group {
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conns = append(conns[:i], conns[i+1:]...)
if includeConnection {
conns = append(conns, conn.Connections...)
}
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return c.saveConnections(conns)
}
}
return errors.New("group not found")
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}