150 lines
4.0 KiB
Go
150 lines
4.0 KiB
Go
/*
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Copyright 2019 The Fission Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package spec
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/ghodss/yaml"
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"github.com/pkg/errors"
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uuid "github.com/satori/go.uuid"
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"github.com/fission/fission/pkg/controller/client"
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"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
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spectypes "github.com/fission/fission/pkg/fission-cli/cmd/spec/types"
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flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
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"github.com/fission/fission/pkg/fission-cli/util"
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)
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type InitSubCommand struct {
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client *client.Client
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deployConfig *spectypes.DeploymentConfig
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}
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func Init(input cli.Input) error {
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c, err := util.GetServer(input)
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if err != nil {
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return err
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}
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opts := InitSubCommand{
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client: c,
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}
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return opts.do(input)
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}
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func (opts *InitSubCommand) do(input cli.Input) error {
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err := opts.complete(input)
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if err != nil {
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return err
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}
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return opts.run(input)
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}
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func (opts *InitSubCommand) complete(input cli.Input) error {
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// Figure out spec directory
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specDir := util.GetSpecDir(input)
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name := input.String(flagkey.SpecName)
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if len(name) == 0 {
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// come up with a name using the current dir
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dir, err := filepath.Abs(".")
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if err != nil {
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return errors.Wrap(err, "error getting current working directory")
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}
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basename := filepath.Base(dir)
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name = util.KubifyName(basename)
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}
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deployID := input.String(flagkey.SpecDeployID)
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if len(deployID) == 0 {
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deployID = uuid.NewV4().String()
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}
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// Create spec dir
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fmt.Printf("Creating fission spec directory '%v'\n", specDir)
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err := os.MkdirAll(specDir, 0755)
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if err != nil {
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return errors.Wrapf(err, "create spec directory '%v'", specDir)
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}
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// Write the deployment config
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opts.deployConfig = &spectypes.DeploymentConfig{
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TypeMeta: spectypes.TypeMeta{
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APIVersion: SPEC_API_VERSION,
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Kind: "DeploymentConfig",
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},
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Name: name,
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// All resources will be annotated with the UID when they're created. This allows
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// us to be idempotent, as well as to delete resources when their specs are
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// removed.
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UID: deployID,
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}
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return nil
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}
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// run just initializes an empty spec directory and adds some
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// sample YAMLs in there that might be useful.
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func (opts *InitSubCommand) run(input cli.Input) error {
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specDir := util.GetSpecDir(input)
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readme := filepath.Join(specDir, "README")
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config := filepath.Join(specDir, "fission-deployment-config.yaml")
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if _, err := os.Stat(config); err == nil {
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return errors.Errorf("Spec DeploymentConfig already exists in directory '%v'", specDir)
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}
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// Add a bit of documentation to the spec dir here
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err := ioutil.WriteFile(readme, []byte(SPEC_README), 0644)
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if err != nil {
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return err
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}
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err = writeDeploymentConfig(config, opts.deployConfig)
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if err != nil {
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return errors.Wrap(err, "error writing deployment config")
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}
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// Other possible things to do here:
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// - add example specs to the dir to make it easy to manually
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// add new ones
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return nil
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}
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// writeDeploymentConfig serializes the DeploymentConfig to YAML and writes it to a new
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// fission-config.yaml in specDir.
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func writeDeploymentConfig(file string, dc *spectypes.DeploymentConfig) error {
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y, err := yaml.Marshal(dc)
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if err != nil {
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return err
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}
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msg := []byte("# This file is generated by the 'fission spec init' command.\n" +
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"# See the README in this directory for background and usage information.\n" +
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"# Do not edit the UID below: that will break 'fission spec apply'\n")
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err = ioutil.WriteFile(file, append(msg, y...), 0644)
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if err != nil {
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return err
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}
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return nil
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}
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