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main.go
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main.go
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package main
import (
"fmt"
"os"
"github.com/urfave/cli"
"github.com/rohitramu/kpm/subcommands"
"github.com/rohitramu/kpm/subcommands/utils/constants"
"github.com/rohitramu/kpm/subcommands/utils/log"
)
/*
TODO: Update docs
- User confirmation flag
- docker subcommand
*/
// Global flags
var (
// Log level
logLevelFlag = cli.StringFlag{
Name: fmt.Sprintf("%s, log", constants.LogLevelFlagName),
Usage: "The minimum severity log level to output - the severity log levels in increasing order are: \"debug\", \"verbose\", \"info\" (default), \"warning\", \"error\", \"none\"",
}
)
// Flags
var (
// Confirmation flag
skipConfirmationFlag = cli.BoolFlag{
Name: fmt.Sprintf("%s, confirmed", constants.SkipConfirmationFlagName),
Usage: "Skip user confirmations.",
}
// Package version
packageVersionFlag = cli.StringFlag{
Name: fmt.Sprintf("%s, v", constants.PackageVersionFlagName),
Usage: "Version of the package.",
}
// Parameters file
parametersFileFlag = cli.StringFlag{
Name: fmt.Sprintf("%s, f", constants.ParametersFileFlagName),
Usage: "Filepath of the parameters file to use.",
}
// Output name
outputNameFlag = cli.StringFlag{
Name: fmt.Sprintf("%s, n", constants.OutputNameFlagName),
Usage: "Name of the output (defaults to \"<package name>-<package version>\").",
}
// Output directory
outputDirFlag = cli.StringFlag{
Name: fmt.Sprintf("%s, o", constants.OutputDirFlagName),
Usage: fmt.Sprintf("Directory in which output files should be written (defaults to \"%s\" under the current working directory) - WARNING: the sub-directory specified by \"<outputName>\" will be deleted if it exists.", constants.GeneratedDirName),
//TODO: Add support for environment variable and file config
}
// Export name
exportNameFlag = cli.StringFlag{
Name: fmt.Sprintf("%s, n", constants.ExportNameFlagName),
Usage: "Name of the exported output (defaults to \"<package name>-<package version>\").",
}
// Export directory
exportDirFlag = cli.StringFlag{
Name: fmt.Sprintf("%s, d", constants.ExportDirFlagName),
Usage: fmt.Sprintf("Directory in which exported files should be written (defaults to \"%s\" under the current working directory) - WARNING: the sub-directory specified by \"<exportName>\" will be deleted if it exists.", constants.ExportDirName),
//TODO: Add support for environment variable and file config
}
// KPM home directory
kpmHomeDirFlag = cli.StringFlag{
Name: fmt.Sprintf("%s, home", constants.KpmHomeDirFlagName),
Usage: "Directory to use as the KPM home folder (defaults to \"~/.kpm\").",
//TODO: Add support for environment variable and file config
}
// Docker registry
dockerRegistryFlag = cli.StringFlag{
Name: fmt.Sprintf("%s, r", constants.DockerRegistryFlagName),
Usage: "The Docker registry to use when pulling or pushing a template package.",
//TODO: Add support for environment variable and file config
}
)
// Entrypoint
func main() {
var err error
// CLI app details
app := cli.NewApp()
app.Name = "kpm"
app.Usage = "Text generation via templates"
app.Version = "1.0.0"
app.EnableBashCompletion = true
// Global flags
app.Flags = []cli.Flag{
logLevelFlag,
}
// Sub-commands
app.Commands = []cli.Command{
// List
{
Name: constants.ListCmdName,
Aliases: []string{"ls"},
Usage: "Lists all packages that are currently available for use.",
Flags: []cli.Flag{
kpmHomeDirFlag,
},
Action: func(c *cli.Context) error {
var kpmHomeDir = getStringFlag(c, constants.KpmHomeDirFlagName)
return subcommands.ListCmd(kpmHomeDir)
},
},
// Remove
{
Name: constants.RemoveCmdName,
Aliases: []string{"rm"},
Usage: "Removes a package from the local KPM package repository.",
Flags: []cli.Flag{
packageVersionFlag,
kpmHomeDirFlag,
skipConfirmationFlag,
},
ArgsUsage: "<package name>",
Action: func(c *cli.Context) error {
var packageName = getStringArg(c, 0)
var packageVersion = getStringFlag(c, constants.PackageVersionFlagName)
var kpmHomeDir = getStringFlag(c, constants.KpmHomeDirFlagName)
var skipConfirmation = getBoolFlag(c, constants.SkipConfirmationFlagName)
return subcommands.RemoveCmd(packageName, packageVersion, kpmHomeDir, skipConfirmation)
},
},
// Purge
{
Name: constants.PurgeCmdName,
Usage: "Removes all versions of a package from the local KPM package repository.",
Flags: []cli.Flag{
kpmHomeDirFlag,
skipConfirmationFlag,
},
ArgsUsage: "<package name>",
Action: func(c *cli.Context) error {
var packageName = getStringArg(c, 0)
var skipConfirmation = getBoolFlag(c, constants.SkipConfirmationFlagName)
var kpmHomeDir = getStringFlag(c, constants.KpmHomeDirFlagName)
return subcommands.PurgeCmd(packageName, skipConfirmation, kpmHomeDir)
},
},
// Pack
{
Name: constants.PackCmdName,
Usage: "Validates a template package and makes it available for use from the local KPM package repository.",
Flags: []cli.Flag{
kpmHomeDirFlag,
skipConfirmationFlag,
},
ArgsUsage: "<package directory>",
Action: func(c *cli.Context) error {
var packageDir = getStringArg(c, 0)
var kpmHomeDir = getStringFlag(c, constants.KpmHomeDirFlagName)
var skipConfirmation = getBoolFlag(c, constants.SkipConfirmationFlagName)
return subcommands.PackCmd(packageDir, kpmHomeDir, skipConfirmation)
},
},
// Unpack
{
Name: constants.UnpackCmdName,
Usage: "Exports a template package to the specified location.",
Flags: []cli.Flag{
packageVersionFlag,
exportDirFlag,
exportNameFlag,
kpmHomeDirFlag,
dockerRegistryFlag,
skipConfirmationFlag,
},
ArgsUsage: "<package name>",
Action: func(c *cli.Context) error {
var packageName = getStringArg(c, 0)
var packageVersion = getStringFlag(c, constants.PackageVersionFlagName)
var exportDir = getStringFlag(c, constants.ExportDirFlagName)
var exportName = getStringFlag(c, constants.ExportNameFlagName)
var kpmHomeDir = getStringFlag(c, constants.KpmHomeDirFlagName)
var dockerRegistry = getStringFlag(c, constants.DockerRegistryFlagName)
var skipConfirmation = getBoolFlag(c, constants.SkipConfirmationFlagName)
return subcommands.UnpackCmd(packageName, packageVersion, exportDir, exportName, kpmHomeDir, dockerRegistry, skipConfirmation)
},
},
// Run
{
Name: constants.RunCmdName,
Usage: "Runs a template package.",
Flags: []cli.Flag{
packageVersionFlag,
parametersFileFlag,
outputDirFlag,
outputNameFlag,
kpmHomeDirFlag,
dockerRegistryFlag,
skipConfirmationFlag,
},
ArgsUsage: "<package name>",
Action: func(c *cli.Context) error {
var packageName = getStringArg(c, 0)
var packageVersion = getStringFlag(c, constants.PackageVersionFlagName)
var paramFile = getStringFlag(c, constants.ParametersFileFlagName)
var outputDir = getStringFlag(c, constants.OutputDirFlagName)
var outputName = getStringFlag(c, constants.OutputNameFlagName)
var kpmHomeDir = getStringFlag(c, constants.KpmHomeDirFlagName)
var dockerRegistry = getStringFlag(c, constants.DockerRegistryFlagName)
var skipConfirmation = getBoolFlag(c, constants.SkipConfirmationFlagName)
return subcommands.RunCmd(packageName, packageVersion, paramFile, outputDir, outputName, kpmHomeDir, dockerRegistry, skipConfirmation)
},
},
// Inspect
{
Name: constants.InspectCmdName,
Usage: "Prints the contents of the default parameters file in a template package.",
Flags: []cli.Flag{
packageVersionFlag,
kpmHomeDirFlag,
dockerRegistryFlag,
},
ArgsUsage: "<package name>",
Action: func(c *cli.Context) error {
var packageName = getStringArg(c, 0)
var packageVersion = getStringFlag(c, constants.PackageVersionFlagName)
var kpmHomeDir = getStringFlag(c, constants.KpmHomeDirFlagName)
var dockerRegistry = getStringFlag(c, constants.DockerRegistryFlagName)
return subcommands.InspectCmd(packageName, packageVersion, kpmHomeDir, dockerRegistry)
},
},
{
Name: constants.DockerCmdName,
Usage: "Docker integration.",
Subcommands: []cli.Command{
// Versions
{
Name: constants.VersionsCmdName,
Usage: "Lists the versions of a package available in a remote Docker registry.",
Flags: []cli.Flag{
dockerRegistryFlag,
},
ArgsUsage: "<package name>",
Action: func(c *cli.Context) error {
var packageName = getStringArg(c, 0)
var dockerRegistry = getStringFlag(c, constants.DockerRegistryFlagName)
return subcommands.GetPackageVersionsCmd(packageName, dockerRegistry)
},
},
// Push
{
Name: constants.PushCmdName,
Usage: "Pushes the template package to a remote Docker registry.",
Flags: []cli.Flag{
packageVersionFlag,
kpmHomeDirFlag,
dockerRegistryFlag,
},
ArgsUsage: "<package name>",
Action: func(c *cli.Context) error {
var packageName = getStringArg(c, 0)
var packageVersion = getStringFlag(c, constants.PackageVersionFlagName)
var kpmHomeDir = getStringFlag(c, constants.KpmHomeDirFlagName)
var dockerRegistry = getStringFlag(c, constants.DockerRegistryFlagName)
return subcommands.PushCmd(packageName, packageVersion, kpmHomeDir, dockerRegistry)
},
},
// Pull
{
Name: constants.PullCmdName,
Usage: "Pulls a template package from a remote Docker registry.",
Flags: []cli.Flag{
packageVersionFlag,
kpmHomeDirFlag,
dockerRegistryFlag,
},
ArgsUsage: "<package name>",
Action: func(c *cli.Context) error {
var packageName = getStringArg(c, 0)
var packageVersion = getStringFlag(c, constants.PackageVersionFlagName)
var kpmHomeDir = getStringFlag(c, constants.KpmHomeDirFlagName)
var dockerRegistry = getStringFlag(c, constants.DockerRegistryFlagName)
return subcommands.PullCmd(packageName, packageVersion, kpmHomeDir, dockerRegistry)
},
},
},
},
}
// Do setup
app.Before = func(c *cli.Context) error {
// Set log level
var logLevel = getGlobalStringFlag(c, constants.LogLevelFlagName)
if logLevel != nil {
// Parse the log level string
var parsedLevel log.Level
parsedLevel, err = log.Parse(*logLevel)
if err != nil {
return err
}
log.SetLevel(parsedLevel)
}
return nil
}
// Start the app
err = app.Run(os.Args)
if err != nil {
log.Fatal("%s", err)
}
}
// +---------+
// | HELPERS |
// +---------+
func getGlobalStringFlag(c *cli.Context, flagName string) *string {
if !c.GlobalIsSet(flagName) {
return nil
}
var result = c.GlobalString(flagName)
return &result
}
func getStringFlag(c *cli.Context, flagName string) *string {
if !c.IsSet(flagName) {
return nil
}
var result = c.String(flagName)
return &result
}
func getStringArg(c *cli.Context, index int) *string {
if index < 0 {
log.Panic("Index cannot be negative: %d", index)
}
if c.NArg() <= index {
return nil
}
var result = c.Args().Get(index)
return &result
}
func getBoolFlag(c *cli.Context, flagName string) *bool {
if !c.IsSet(flagName) {
return nil
}
var result = c.Bool(flagName)
return &result
}