netdata/netdata

// 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
}