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program.go
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program.go
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// Copyright 2019 HAProxy Technologies
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package configuration
import (
"errors"
"fmt"
"github.com/go-openapi/strfmt"
parser "github.com/haproxytech/config-parser/v4"
parsererrors "github.com/haproxytech/config-parser/v4/errors"
"github.com/haproxytech/config-parser/v4/types"
"github.com/haproxytech/client-native/v4/misc"
"github.com/haproxytech/client-native/v4/models"
)
type Program interface {
GetPrograms(transactionID string) (int64, models.Programs, error)
GetProgram(name string, transactionID string) (int64, *models.Program, error)
DeleteProgram(name string, transactionID string, version int64) error
CreateProgram(data *models.Program, transactionID string, version int64) error
EditProgram(name string, data *models.Program, transactionID string, version int64) error
}
func (c *client) GetPrograms(transactionID string) (int64, models.Programs, error) {
p, err := c.GetParser(transactionID)
if err != nil {
return 0, nil, err
}
v, err := c.GetVersion(transactionID)
if err != nil {
return 0, nil, err
}
programNames, err := p.SectionsGet(parser.Program)
if err != nil {
return v, nil, err
}
programs := make(models.Programs, 0, len(programNames))
for _, name := range programNames {
program, parseErr := ParseProgram(p, name)
if parseErr != nil {
continue
}
programs = append(programs, program)
}
return v, programs, nil
}
func (c *client) GetProgram(name string, transactionID string) (int64, *models.Program, error) {
p, err := c.GetParser(transactionID)
if err != nil {
return 0, nil, err
}
v, err := c.GetVersion(transactionID)
if err != nil {
return 0, nil, err
}
if !c.checkSectionExists(parser.Program, name, p) {
return v, nil, NewConfError(ErrObjectDoesNotExist, fmt.Sprintf("Program %s does not exist", name))
}
program, parseErr := ParseProgram(p, name)
if parseErr != nil {
return 0, nil, parseErr
}
return v, program, nil
}
func (c *client) DeleteProgram(name string, transactionID string, version int64) error {
if err := c.deleteSection(parser.Program, name, transactionID, version); err != nil {
return err
}
return nil
}
func (c *client) CreateProgram(data *models.Program, transactionID string, version int64) error {
if c.UseModelsValidation {
validationErr := data.Validate(strfmt.Default)
if validationErr != nil {
return NewConfError(ErrValidationError, validationErr.Error())
}
}
p, t, err := c.loadDataForChange(transactionID, version)
if err != nil {
return err
}
if c.checkSectionExists(parser.Program, data.Name, p) {
e := NewConfError(ErrObjectAlreadyExists, fmt.Sprintf("%s %s already exists", parser.Program, data.Name))
return c.HandleError(data.Name, "", "", t, transactionID == "", e)
}
if err = p.SectionsCreate(parser.Program, data.Name); err != nil {
return c.HandleError(data.Name, "", "", t, transactionID == "", err)
}
if err = SerializeProgramSection(p, data); err != nil {
return err
}
if err = c.SaveData(p, t, transactionID == ""); err != nil {
return err
}
return nil
}
func (c *client) EditProgram(name string, data *models.Program, transactionID string, version int64) error {
if c.UseModelsValidation {
validationErr := data.Validate(strfmt.Default)
if validationErr != nil {
return NewConfError(ErrValidationError, validationErr.Error())
}
}
p, t, err := c.loadDataForChange(transactionID, version)
if err != nil {
return err
}
if !c.checkSectionExists(parser.Program, name, p) {
e := NewConfError(ErrObjectAlreadyExists, fmt.Sprintf("%s %s does not exists", parser.Program, data.Name))
return c.HandleError(data.Name, "", "", t, transactionID == "", e)
}
if err = SerializeProgramSection(p, data); err != nil {
return err
}
if err = c.SaveData(p, t, transactionID == ""); err != nil {
return err
}
return nil
}
func SerializeProgramSection(p parser.Parser, data *models.Program) error {
if data == nil {
return fmt.Errorf("empty program")
}
if data.Command == nil {
return fmt.Errorf("command must be set")
}
if err := p.Set(parser.Program, data.Name, "command", types.Command{Args: *data.Command}); err != nil {
return err
}
user := &types.StringC{Value: data.User}
if data.User == "" {
user = nil
}
if err := p.Set(parser.Program, data.Name, "user", user); err != nil {
return err
}
group := &types.StringC{Value: data.Group}
if data.Group == "" {
group = nil
}
if err := p.Set(parser.Program, data.Name, "group", group); err != nil {
return err
}
if err := p.Set(parser.Program, data.Name, "option start-on-reload", serializeSimpleOption(data.StartOnReload)); err != nil {
return err
}
return nil
}
func ParseProgram(p parser.Parser, name string) (*models.Program, error) {
program := models.Program{
Name: name,
}
data, err := p.Get(parser.Program, name, "command")
if err != nil {
if errors.Is(err, parsererrors.ErrFetch) {
data = types.Command{}
} else {
return nil, err
}
}
program.Command = misc.StringP((data.(*types.Command)).Args)
data, err = p.Get(parser.Program, name, "user")
if err == nil {
program.User = data.(*types.StringC).Value
}
data, err = p.Get(parser.Program, name, "group")
if err == nil {
program.Group = data.(*types.StringC).Value
}
data, err = p.Get(parser.Program, name, "option start-on-reload")
if err == nil {
opt := data.(*types.SimpleOption)
if opt.NoOption {
program.StartOnReload = models.ProgramStartOnReloadDisabled
} else {
program.StartOnReload = models.ProgramStartOnReloadEnabled
}
}
return &program, nil
}