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services-list.go
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services-list.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 cmd
import (
"os"
"regexp"
"text/tabwriter"
"text/template"
micro "github.com/micro/go-micro"
"github.com/spf13/cobra"
"github.com/pydio/cells/common"
"github.com/pydio/cells/common/registry"
"github.com/pydio/cells/common/service"
"github.com/pydio/cells/common/micro"
)
var (
showDescription bool
filterListTags []string
filterListExclude []string
tmpl = `
{{- block "keys" .}}
{{- range $index, $category := .}}
{{- if $category.Name}}
{{- ""}} {{$category.Name}} {{""}} {{"\n"}}
{{- end}}
{{- range $index, $subcategory := .Tags}}
{{- if $subcategory.Name}}
{{- ""}} {{"#"}} {{$subcategory.Name}} {{""}} {{"\n"}}
{{- end}}
{{- range .Services}}
{{- ""}} {{.Name}} [{{if .IsRunning}}X{{else}} {{end}}] {{"\n"}}
{{- end}}
{{- end}}
{{- ""}} {{""}} {{""}} {{"\n"}}
{{- end}}
{{- end}}
`
)
type Tags struct {
Name string
Services map[string]registry.Service
Tags map[string]*Tags
}
// servicesListCmd lists available services and their statuses.
var servicesListCmd = &cobra.Command{
Use: "list",
Short: "List all available services and their statuses",
Long: `List all available services and their statuses
Use this command to list all running services on this machine.
Services fall into main categories (GENERIC, GRPC, REST, API) and are then
organized by tags (broker, data, idm, etc.)
### Example
Use the --tags/-t flag to limit display to one specific tag, use lowercase for tags.
$ ` + os.Args[0] + ` list -t=broker
- pydio.grpc.activity [X]
- pydio.grpc.chat [X]
- pydio.grpc.mailer [X]
- pydio.api.websocket [X]
- pydio.rest.activity [X]
- pydio.rest.frontlogs [X]
- pydio.rest.mailer [X]
`,
PreRun: func(cmd *cobra.Command, args []string) {
// If we have an error (registry not running) the running list simply is empty
runningServices, _ = defaults.Registry().ListServices()
// Removing install services
registry.Default.Filter(func(s registry.Service) bool {
re := regexp.MustCompile(common.SERVICE_INSTALL)
if re.MatchString(s.Name()) {
return true
}
return false
})
// Filtering services by tags
registry.Default.Filter(func(s registry.Service) bool {
for _, t := range filterListTags {
for _, st := range s.Tags() {
if t == st {
return false
}
}
}
return len(filterListTags) > 0
})
// Filtering services by args
registry.Default.Filter(func(s registry.Service) bool {
for _, arg := range args {
reArg := regexp.MustCompile(arg)
if reArg.MatchString(s.Name()) {
return false
}
}
return len(args) > 0
})
// Filtering services by regexp
registry.Default.Filter(func(s registry.Service) bool {
reg := s.Regexp()
if reg == nil {
return false
}
found := false
for _, arg := range args {
if reg.MatchString(arg) {
found = true
}
}
if len(args) == 0 || found {
// Adding all running services that match the service regexp
for _, r := range runningServices {
if reg.MatchString(r.Name) {
service.NewService(
service.Name(r.Name),
service.Tag(s.Tags()...),
service.WithMicro(func(m micro.Service) error { return nil }),
)
}
}
// Then filter out the one with just the regexp
return true
}
return false
})
// Re-building allServices list
if s, err := registry.Default.ListServices(); err != nil {
cmd.Print("Could not retrieve list of services")
os.Exit(0)
} else {
allServices = s
}
},
Run: func(cmd *cobra.Command, args []string) {
t, _ := template.New("t1").Parse(tmpl)
tags := []*Tags{
{"GENERIC SERVICES", nil, getTagsPerType(func(s registry.Service) bool { return s.IsGeneric() })},
{"GRPC SERVICES", nil, getTagsPerType(func(s registry.Service) bool { return s.IsGRPC() })},
{"REST SERVICES", nil, getTagsPerType(func(s registry.Service) bool { return s.IsREST() })},
}
w := tabwriter.NewWriter(cmd.OutOrStdout(), 8, 8, 8, ' ', 0)
t.Execute(w, tags)
},
}
func init() {
servicesListCmd.Flags().BoolVarP(&showDescription, "verbose", "v", false, "Show services description")
servicesListCmd.Flags().StringArrayVarP(&filterListTags, "tags", "t", []string{}, "Filter by tags")
servicesListCmd.Flags().StringArrayVarP(&filterListExclude, "exclude", "x", []string{}, "Filter")
RootCmd.AddCommand(servicesListCmd)
}
func getTagsPerType(f func(s registry.Service) bool) map[string]*Tags {
s, _ := registry.ListServices()
r, _ := registry.ListRunningServices()
all := []registry.Service{}
all = append(all, s...)
all = append(all, r...)
tags := make(map[string]*Tags)
for _, s := range all {
name := s.Name()
if f(s) {
for _, tag := range s.Tags() {
if _, ok := tags[tag]; !ok {
tags[tag] = &Tags{Name: tag, Services: make(map[string]registry.Service)}
}
tags[tag].Services[name] = s
}
}
}
return tags
}