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services.go
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services.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package registry
import (
"context"
"fmt"
"regexp"
"github.com/gyuho/goraph"
"github.com/micro/go-micro/registry"
"github.com/pydio/cells/common/forms"
)
// Service defines the primary functions a service must be able to answer to for the registry
type Service interface {
Start()
Stop()
IsRunning() bool
IsExcluded() bool
SetExcluded(ex bool)
Check(context.Context) error
Name() string
Regexp() *regexp.Regexp
Version() string
Description() string
Tags() []string
GetDependencies() []Service
AddDependency(string)
SetRunningNodes([]*registry.Node)
RunningNodes() []*registry.Node
ExposedConfigs() *forms.Form
IsGeneric() bool
IsGRPC() bool
IsREST() bool
RequiresFork() bool
ForkStart()
MatchesRegexp(string) bool
BeforeInit() error
AfterInit() error
}
// GetServicesByName returns a list of service that match the name given in argument
func (c *pydioregistry) GetServicesByName(name string) []Service {
var s []Service
for _, ss := range c.register {
if matched, _ := regexp.MatchString(name, ss.Name()); matched {
if !ss.IsExcluded() {
s = append(s, ss)
}
}
}
return s
}
// ListServices gives the list of all services registered (whether started or not) in the main registry
func (c *pydioregistry) ListServices(withExcluded ...bool) ([]Service, error) {
c.Lock()
defer c.Unlock()
var services []Service
servicesID, ok := goraph.TopologicalSort(c.graph)
if !ok {
return nil, fmt.Errorf("Could not sort services")
}
for _, serviceID := range servicesID {
if service, ok := c.register[serviceID.String()]; ok {
if !service.IsExcluded() || (len(withExcluded) > 0 && withExcluded[0]) {
services = append(services, service)
}
}
}
return services, nil
}