src/go/plugin/go.d/modules/proxysql/cache.go
// SPDX-License-Identifier: GPL-3.0-or-later
package proxysql
type (
cache struct {
commands map[string]*commandCache
users map[string]*userCache
backends map[string]*backendCache
}
commandCache struct {
command string
hasCharts, updated bool
}
userCache struct {
user string
hasCharts, updated bool
}
backendCache struct {
hg, host, port string
hasCharts, updated bool
}
)
func (c *cache) reset() {
for k, m := range c.commands {
c.commands[k] = &commandCache{command: m.command, hasCharts: m.hasCharts}
}
for k, m := range c.users {
c.users[k] = &userCache{user: m.user, hasCharts: m.hasCharts}
}
for k, m := range c.backends {
c.backends[k] = &backendCache{hg: m.hg, host: m.host, port: m.port, hasCharts: m.hasCharts}
}
}
func (c *cache) getCommand(command string) *commandCache {
v, ok := c.commands[command]
if !ok {
v = &commandCache{command: command}
c.commands[command] = v
}
return v
}
func (c *cache) getUser(user string) *userCache {
v, ok := c.users[user]
if !ok {
v = &userCache{user: user}
c.users[user] = v
}
return v
}
func (c *cache) getBackend(hg, host, port string) *backendCache {
id := backendID(hg, host, port)
v, ok := c.backends[id]
if !ok {
v = &backendCache{hg: hg, host: host, port: port}
c.backends[id] = v
}
return v
}