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// Copyright 2015 Canonical Ltd.
// Copyright 2015 Cloudbase Solutions SRL
// Licensed under the LGPLv3, see LICENCE file for details.
// The manager package defines an interface which can carry out numerous
// package-management related operations on the local system and the respective
// implementations on apt and yum-based systems.
package manager
import (
"github.com/juju/utils/packaging/commands"
"github.com/juju/utils/proxy"
)
// PackageManager is the interface which carries out various
// package-management related work.
type PackageManager interface {
// InstallPrerequisite runs the command which installs the prerequisite
// package which provides repository management functionalityes.
InstallPrerequisite() error
// Update runs the command to update the local package list.
Update() error
// Upgrade runs the command which issues an upgrade on all packages
// with available newer versions.
Upgrade() error
// Install runs a *single* command that installs the given package(s).
Install(packs ...string) error
// Remove runs a *single* command that removes the given package(s).
Remove(packs ...string) error
// Purge runs the command that removes the given package(s) along
// with any associated config files.
Purge(packs ...string) error
// Search runs the command that determines whether the given package is
// available for installation from the currently configured repositories.
Search(pack string) (bool, error)
// IsInstalled runs the command which determines whether or not the
// given package is currently installed on the system.
IsInstalled(pack string) bool
// AddRepository runs the command that adds a repository to the
// list of available repositories.
// NOTE: requires the prerequisite package whose installation command
// is done by running InstallPrerequisite().
AddRepository(repo string) error
// RemoveRepository runs the command that removes a given
// repository from the list of available repositories.
// NOTE: requires the prerequisite package whose installation command
// is done by running InstallPrerequisite().
RemoveRepository(repo string) error
// Cleanup runs the command that cleans up all orphaned packages,
// left-over files and previously-cached packages.
Cleanup() error
// GetProxySettings returns the curretly-configured package manager proxy.
GetProxySettings() (proxy.Settings, error)
// SetProxy runs the commands to set the given proxy parameters for the
// package management system.
SetProxy(settings proxy.Settings) error
}
// NewPackageManager returns the appropriate PackageManager implementation
// based on the provided series.
func NewPackageManager(series string) (PackageManager, error) {
// TODO (aznashwan): find a more deterministic way of filtering out
// release series without importing version from core.
switch series {
case "centos7":
return NewYumPackageManager(), nil
case "opensuseleap":
return NewZypperPackageManager(), nil
default:
return NewAptPackageManager(), nil
}
}
// NewAptPackageManager returns a PackageManager for apt-based systems.
func NewAptPackageManager() PackageManager {
return &apt{basePackageManager{commands.NewAptPackageCommander()}}
}
// NewYumPackageManager returns a PackageManager for yum-based systems.
func NewYumPackageManager() PackageManager {
return &yum{basePackageManager{commands.NewYumPackageCommander()}}
}
func NewZypperPackageManager() PackageManager {
return &zypper{basePackageManager{commands.NewZypperPackageCommander()}}
}
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