Create omctl command-line interface for openmock

Use omctl to post templates from a local directory at a remote openmock
instance.

Have post templates job use actual openmock to load templates, to take advantage of all features

When loading a payload / body from file, delete the 'FromFile' field so that only the loaded body is saved

Add some info to the README about the admin interface and om_post_templatse

use log.Fatalf,  remove Exit()

Update README.md

Co-Authored-By: Vlad Zelmanov <51313481+vzvzv@users.noreply.github.com>

Update README.md

Co-Authored-By: Vlad Zelmanov <51313481+vzvzv@users.noreply.github.com>

EPLT-866: create 'omctl' interface with cobra library instead of stand-alone post-templates script

Remove post_templates, move url flag to directory, change default templates to demo_templates

Update README

Remove noun from CLI - just 'omctl update'

Update readme

Code review comments

Author: sesquipedalian-dev

.gitignore

@@ -11,4 +11,4 @@
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 /om
-/cmd/om/om
+/omctl

Dockerfile

@@ -7,6 +7,7 @@ FROM alpine:3.6
 WORKDIR /go/src/github.com/checkr/openmock
 RUN apk add --no-cache ca-certificates libc6-compat
 COPY --from=builder /go/src/github.com/checkr/openmock/om ./om
+COPY --from=builder /go/src/github.com/checkr/openmock/omctl ./omctl
 ENV OPENMOCK_HTTP_HOST=0.0.0.0
 ENV OPENMOCK_TEMPLATES_DIR=/data/templates
 CMD ./om

Makefile

@@ -5,9 +5,14 @@ vendor:
 	@GO111MODULE=on go mod tidy
 	@GO111MODULE=on go mod vendor
 
-build:
+build: build_om build_omctl
+
+build_om:
 	@GO111MODULE=on go build -mod=vendor -o $(PWD)/om github.com/checkr/openmock/cmd/om
 
+build_omctl:
+	@GO111MODULE=on go build -mod=vendor -o $(PWD)/omctl github.com/checkr/openmock/cmd/omctl
+
 test: lint
 	@GO111MODULE=on go test -mod=vendor -race -covermode=atomic .
 

README.md

@@ -288,6 +288,18 @@ OpenMock leverages [https://golang.org/pkg/text/template/](https://golang.org/pk
   {{.HTTPBody | xmlPath "node1/node2/node3"}}
   ```
 
+## Command Line Interface
+Openmock has a command-line interface to help with certain tasks interacting with openmock instances. This is 
+invoked with the `omctl` command.  This uses the [cobra](https://github.com/spf13/cobra) library to provide a discoverable CLI; run `omctl` for a list of commands / flags. 
+
+### CLI: Directory
+#### Push
+Pushes a local openmock model from the file system to a remote instance.
+```
+# Adds templates from the ./demo_templates directory to the instance running on localhost.
+omctl push --directory ./demo_templates --url http://localhost:9998
+```
+
 ### Example: Mock HTTP
 ```yaml
 # demo_templates/http.yaml

cmd/omctl/cmd/root.go

@@ -0,0 +1,35 @@
+package cmd
+
+import (
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+// RootCmd represents the base command when called without any subcommands
+var RootCmd = &cobra.Command{
+	Use:          "omctl",
+	Short:        "CLI for openmock",
+	SilenceUsage: true,
+	Long: `
+		A simple CLI for interacting with openmock.
+`,
+}
+
+// Execute adds all child commands to the root command and sets flags appropriately.
+// This is called by main.main(). It only needs to happen once to the rootCmd.
+func Execute() {
+	if err := RootCmd.Execute(); err != nil {
+		logrus.Fatal(err)
+	}
+}
+
+// local openmock directory
+var localDirectory string
+
+// URL of remote openmock instance to control
+var openMockURL string
+
+func init() {
+	RootCmd.PersistentFlags().StringVarP(&localDirectory, "directory", "d", "./demo_templates", "Local directory in filesystem to upload to remote openmock")
+	RootCmd.PersistentFlags().StringVarP(&openMockURL, "url", "u", "http://localhost:9998", "URL for remote openmock instance to control")
+}

cmd/omctl/cmd/update.go

@@ -0,0 +1,61 @@
+package cmd
+
+import (
+	"bytes"
+	"fmt"
+	"net/http"
+
+	"github.com/checkr/openmock"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+var pushCmd = &cobra.Command{
+	Use:   "push",
+	Short: "push local openmock model to remote instance",
+	Long:  "push local openmock model to remote instance",
+	Args:  cobra.MaximumNArgs(1),
+	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
+		// check if remote instance reachable
+		response, httpErr := http.Get(openMockURL + "/api/v1/templates")
+		if httpErr != nil || response == nil {
+			return fmt.Errorf("Remote openmock instance not reachable %s: [%s]", openMockURL, httpErr)
+		}
+		if response.StatusCode != 200 {
+			return fmt.Errorf("Remote openmock instance not reachable %s: [%d]", openMockURL, response.StatusCode)
+		}
+		response.Body.Close()
+		return nil
+	},
+	RunE: func(cmd *cobra.Command, args []string) error {
+		// load local templates
+		localOpenMock := openmock.OpenMock{}
+		localOpenMock.ParseEnv()
+		localOpenMock.TemplatesDir = localDirectory
+
+		localOpenMock.SetupLogrus()
+		localOpenMock.SetupRepo()
+
+		err := localOpenMock.Load()
+		if err != nil {
+			logrus.Errorf("%s: %s", "failed to load yaml templates for mocks", err)
+			return err
+		}
+
+		// post the loaded templates at the openmock instance
+		templatesYaml := localOpenMock.ToYAML()
+		response, httpErr := http.Post(openMockURL+"/api/v1/templates", "application/yaml", bytes.NewReader(templatesYaml))
+		if httpErr != nil {
+			logrus.Errorf("Error posting templates at %s: [%s]", openMockURL, httpErr)
+			return httpErr
+		}
+		response.Body.Close()
+
+		logrus.Info("Posted templates!")
+		return nil
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(pushCmd)
+}

cmd/omctl/main.go

@@ -0,0 +1,9 @@
+package main
+
+import (
+	"github.com/checkr/openmock/cmd/omctl/cmd"
+)
+
+func main() {
+	cmd.Execute()
+}

go.mod

@@ -16,8 +16,6 @@ require (
 	github.com/bsm/sarama-cluster v2.1.15+incompatible
 	github.com/caarlos0/env v3.3.0+incompatible
 	github.com/dafiti/echo-middleware v0.0.0-20180423194757-e57a87d075ea
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
 	github.com/eapache/go-resiliency v1.1.0 // indirect
 	github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21 // indirect
 	github.com/eapache/queue v1.1.0 // indirect
@@ -39,19 +37,18 @@ require (
 	github.com/onsi/gomega v1.5.0 // indirect
 	github.com/parnurzeal/gorequest v0.0.0-20171015110455-8e3aed27fe49
 	github.com/pierrec/lz4 v2.0.3+incompatible // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prashantv/gostub v1.0.0
 	github.com/rcrowley/go-metrics v0.0.0-20180503174638-e2704e165165 // indirect
-	github.com/sirupsen/logrus v1.0.6
+	github.com/sirupsen/logrus v1.2.0
 	github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a // indirect
-	github.com/spf13/cast v1.2.0
+	github.com/spf13/cast v1.3.0
+	github.com/spf13/cobra v0.0.5
+	github.com/spf13/viper v1.5.0
 	github.com/streadway/amqp v0.0.0-20180806233856-70e15c650864
 	github.com/stretchr/testify v1.2.2
 	github.com/teamwork/reload v0.0.0-20190319183701-e8d47ccac39e
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v0.0.0-20170224212429-dcecefd839c4 // indirect
 	github.com/yuin/gopher-lua v0.0.0-20180827083657-b942cacc89fe // indirect
-	gopkg.in/airbrake/gobrake.v2 v2.0.9 // indirect
-	gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2 // indirect
-	gopkg.in/yaml.v2 v2.2.1
+	gopkg.in/yaml.v2 v2.2.4
 )