Add config command

cli/config/config.go

@@ -0,0 +1,65 @@
+package config
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/arduino/arduino-cli/cli/feedback"
+	paths "github.com/arduino/go-paths-helper"
+	"github.com/bcmi-labs/iot-cloud-cli/command/config"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var configFlags struct {
+	file   string
+	client string
+	secret string
+}
+
+func NewCommand() *cobra.Command {
+	configCommand := &cobra.Command{
+		Use:   "config",
+		Short: "Set the configuration file",
+		Long:  "Set the configuration file to access Arduino IoT Cloud",
+		RunE:  runConfigCommand,
+	}
+	configCommand.Flags().StringVarP(&configFlags.file, "file", "f", "", "Existing configuration yaml file")
+	configCommand.Flags().StringVarP(&configFlags.client, "client", "c", "", "Client ID")
+	configCommand.Flags().StringVarP(&configFlags.secret, "secret", "s", "", "Secret ID")
+	return configCommand
+}
+
+func runConfigCommand(cmd *cobra.Command, args []string) error {
+	if configFlags.file == "" && (configFlags.client == "" || configFlags.secret == "") {
+		return fmt.Errorf("%s", "Provide either a yaml file or credentials\n")
+	}
+
+	conf := viper.New()
+
+	if configFlags.file != "" {
+		file := paths.New(configFlags.file)
+		filename := strings.TrimSuffix(file.String(), file.Ext())
+		conf.SetConfigName(filename)
+		conf.SetConfigType(strings.Trim(file.Ext(), "."))
+		conf.AddConfigPath(".")
+		err := conf.ReadInConfig()
+		if err != nil {
+			feedback.Errorf("Fatal error config file:  %v", err)
+			return err
+		}
+
+	} else {
+		conf.BindPFlag("client", cmd.Flag("client"))
+		conf.BindPFlag("secret", cmd.Flag("secret"))
+	}
+
+	err := config.Config(conf)
+	if err != nil {
+		feedback.Errorf("Storing config file:  %v", err)
+		return err
+	}
+
+	fmt.Println("Configuration file updated")
+	return nil
+}

cli/root.go

@@ -4,13 +4,15 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/bcmi-labs/iot-cloud-cli/cli/config"
 	"github.com/bcmi-labs/iot-cloud-cli/cli/ping"
 	"github.com/spf13/cobra"
 )
 
 func Execute() {
 	rootCmd := &cobra.Command{}
 	rootCmd.AddCommand(ping.NewCommand())
+	rootCmd.AddCommand(config.NewCommand())
 
 	if err := rootCmd.Execute(); err != nil {
 		fmt.Fprintln(os.Stderr, err)

command/config/config.go

@@ -0,0 +1,20 @@
+package config
+
+import (
+	"github.com/arduino/arduino-cli/cli/feedback"
+	"github.com/spf13/viper"
+)
+
+// Config accepts a configured viper instance and
+// saves it into a specific config file.
+func Config(conf *viper.Viper) error {
+
+	// TODO: check if conf has the correct parameters
+	// e.g. 'client' and 'secret'
+
+	if err := conf.WriteConfigAs("config.yaml"); err != nil {
+		feedback.Errorf("Cannot create config file: %v", err)
+		return err
+	}
+	return nil
+}

go.mod

@@ -4,13 +4,15 @@ go 1.15
 
 require (
 	github.com/arduino/arduino-cli v0.0.0-20210607095659-16f41352eac3
+	github.com/arduino/go-paths-helper v1.6.0
 	github.com/arduino/iot-client-go v1.3.3
 	github.com/bcmi-labs/oniudra-cli v0.15.8
 	github.com/eclipse/paho.mqtt.golang v1.3.2
 	github.com/howeyc/crc16 v0.0.0-20171223171357-2b2a61e366a6
 	github.com/juju/errors v0.0.0-20200330140219-3fe23663418f
 	github.com/sirupsen/logrus v1.8.1
 	github.com/spf13/cobra v1.1.3
+	github.com/spf13/viper v1.7.0
 	go.bug.st/serial v1.3.0
 	golang.org/x/net v0.0.0-20210505024714-0287a6fb4125 // indirect
 	golang.org/x/oauth2 v0.0.0-20210628180205-a41e5a781914

go.sum

@@ -47,6 +47,7 @@ github.com/Azure/go-autorest/autorest/to v0.2.0/go.mod h1:GunWKJp1AEqgMaGLV+iocm
 github.com/Azure/go-autorest/autorest/validation v0.1.0/go.mod h1:Ha3z/SqBeaalWQvokg3NZAlQTalVMtOIAs1aGK7G6u8=
 github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6LSNgds39diKLz7Vrc=
 github.com/Azure/go-autorest/tracing v0.5.0/go.mod h1:r/s2XiOKccPW3HrqB+W0TQzfbtp2fGCgRFtBroKn4Dk=
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/DataDog/datadog-go v2.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
@@ -72,6 +73,7 @@ github.com/arduino/arduino-cli v0.0.0-20210607095659-16f41352eac3/go.mod h1:72+Q
 github.com/arduino/board-discovery v0.0.0-20180823133458-1ba29327fb0c/go.mod h1:HK7SpkEax/3P+0w78iRQx1sz1vCDYYw9RXwHjQTB5i8=
 github.com/arduino/go-paths-helper v1.0.1/go.mod h1:HpxtKph+g238EJHq4geEPv9p+gl3v5YYu35Yb+w31Ck=
 github.com/arduino/go-paths-helper v1.2.0/go.mod h1:HpxtKph+g238EJHq4geEPv9p+gl3v5YYu35Yb+w31Ck=
+github.com/arduino/go-paths-helper v1.6.0 h1:S7/d7DqB9XlnvF9KrgSiGmo2oWKmYW6O/DTjj3Bijx4=
 github.com/arduino/go-paths-helper v1.6.0/go.mod h1:V82BWgAAp4IbmlybxQdk9Bpkz8M4Qyx+RAFKaG9NuvU=
 github.com/arduino/go-properties-orderedmap v1.3.0/go.mod h1:DKjD2VXY/NZmlingh4lSFMEYCVubfeArCsGPGDwb2yk=
 github.com/arduino/go-timeutils v0.0.0-20171220113728-d1dd9e313b1b/go.mod h1:uwGy5PpN4lqW97FiLnbcx+xx8jly5YuPMJWfVwwjJiQ=
@@ -172,6 +174,7 @@ github.com/fluxio/multierror v0.0.0-20160419044231-9c68d39025e5/go.mod h1:BEUDl7
 github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
 github.com/franela/goblin v0.0.0-20181003173013-ead4ad1d2727 h1:eouy4stZdUKn7n98c1+rdUTxWMg+jvhP+oHt0K8fiug=
 github.com/franela/goblin v0.0.0-20181003173013-ead4ad1d2727/go.mod h1:7dvUGVsVBjqR7JHJk0brhHOZYGmfBYOrK0ZhYMEtBr4=
+github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/gliderlabs/ssh v0.2.2/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
@@ -261,6 +264,7 @@ github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
+github.com/gopherjs/gopherjs v0.0.0-20190812055157-5d271430af9f h1:KMlcu9X58lhTA/KrfX8Bi1LQSO4pzoVjTiL3h4Jk+Zk=
 github.com/gopherjs/gopherjs v0.0.0-20190812055157-5d271430af9f/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
 github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
@@ -292,6 +296,7 @@ github.com/hashicorp/go.net v0.0.1/go.mod h1:hjKkEWcCURg++eb33jQU7oqQcI9XDCnUzHA
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.3/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
+github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/hashicorp/logutils v1.0.0/go.mod h1:QIAnNjmIWmVIIkWDTG1z5v++HQmx9WQRO+LraFDTW64=
 github.com/hashicorp/mdns v1.0.0/go.mod h1:tL+uN++7HEJ6SQLQ2/p+z2pH24WQKWjBPkE0mNTz8vQ=
@@ -313,6 +318,7 @@ github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCV
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
 github.com/jtolds/gls v4.2.1+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
+github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/juju/clock v0.0.0-20180524022203-d293bb356ca4/go.mod h1:nD0vlnrUjcjJhqN5WuCWZyzfd5AHZAC9/ajvbSx69xA=
 github.com/juju/errors v0.0.0-20150916125642-1b5e39b83d18/go.mod h1:W54LbzXuIE0boCoNJfwqpmkKJ1O4TCTZMetAt6jGk7Q=
@@ -350,6 +356,7 @@ github.com/lib/pq v1.0.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/lib/pq v1.2.0 h1:LXpIM/LZ5xGFhOpXAQUIMM1HdyqzVYM13zNdjCEEcA0=
 github.com/lib/pq v1.2.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
+github.com/magiconair/properties v1.8.1 h1:ZC2Vc7/ZFkGmsVC9KvOjumD+G5lXy2RtTKyzRKO2BQ4=
 github.com/magiconair/properties v1.8.1/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mailru/easyjson v0.0.0-20180823135443-60711f1a8329/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/manveru/faker v0.0.0-20171103152722-9fbc68a78c4d/go.mod h1:WZy8Q5coAB1zhY9AOBJP0O6J4BuDfbupUDavKY+I3+s=
@@ -376,6 +383,7 @@ github.com/mitchellh/go-wordwrap v1.0.0/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUb
 github.com/mitchellh/gox v0.4.0/go.mod h1:Sd9lOJ0+aimLBi73mGofS1ycjY8lL3uZM3JPS42BGNg=
 github.com/mitchellh/iochan v1.0.0/go.mod h1:JwYml1nuB7xOzsp52dPpHFffvOCDupsG0QubkSMEySY=
 github.com/mitchellh/mapstructure v0.0.0-20160808181253-ca63d7c062ee/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
+github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
@@ -405,6 +413,7 @@ github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FI
 github.com/pascaldekloe/goe v0.1.0/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
 github.com/pborman/uuid v1.2.0/go.mod h1:X/NO0urCmaxf9VXbdlT7C2Yzkj2IKimNn4k+gtPdI/k=
 github.com/pelletier/go-buffruneio v0.2.0/go.mod h1:JkE26KsDizTr40EUHkXVtNPvgGtbSNq5BcowyYOWdKo=
+github.com/pelletier/go-toml v1.2.0 h1:T5zMGML61Wp+FlcbWjRDT7yAxhJNAiPPLOFECq181zc=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -451,23 +460,29 @@ github.com/sirupsen/logrus v1.8.1 h1:dJKuHgqk1NNQlqoA6BTlM1Wf9DOH3NBjQyu0h9+AZZE
 github.com/sirupsen/logrus v1.8.1/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
 github.com/smartystreets/assertions v0.0.0-20190116191733-b6c0e53d7304/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
+github.com/smartystreets/assertions v1.0.1 h1:voD4ITNjPL5jjBfgR/r8fPIIBrliWrWHeiJApdr3r4w=
 github.com/smartystreets/assertions v1.0.1/go.mod h1:kHHU4qYBaI3q23Pp3VPrmWhuIUrLW/7eUrw0BU5VaoM=
 github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c/go.mod h1:XDJAKZRPZ1CvBcN2aX5YOUTYGHki24fSF0Iv48Ibg0s=
 github.com/smartystreets/goconvey v0.0.0-20190731233626-505e41936337/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
+github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4kGIyLM=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
+github.com/spf13/afero v1.1.2 h1:m8/z1t7/fwjysjQRYbP0RD+bUIF/8tJwPdEZsI83ACI=
 github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
+github.com/spf13/cast v1.3.0 h1:oget//CVOEoFewqQxwr0Ej5yjygnqGkvggSE/gB35Q8=
 github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
 github.com/spf13/cobra v1.0.1-0.20200710201246-675ae5f5a98c/go.mod h1:aeNIJzz/GSSVlS+gpCpQWZ83BKbsoW57mr90+YthtkQ=
 github.com/spf13/cobra v1.1.3 h1:xghbfqPkxzxP3C/f3n5DdpAbdKLj4ZE4BWQI362l53M=
 github.com/spf13/cobra v1.1.3/go.mod h1:pGADOWyqRD/YMrPZigI/zbliZ2wVD/23d+is3pSWzOo=
+github.com/spf13/jwalterweatherman v1.0.0 h1:XHEdyB+EcvlqZamSM4ZOMGlc93t6AcsBEu9Gc1vn7yk=
 github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/spf13/viper v1.4.0/go.mod h1:PTJ7Z/lr49W6bUbkmS1V3by4uWynFiR9p7+dSq/yZzE=
 github.com/spf13/viper v1.6.2/go.mod h1:t3iDnF5Jlj76alVNuyFBk5oUMCvsrkbvZK0WQdfDi5k=
+github.com/spf13/viper v1.7.0 h1:xVKxvI7ouOI5I+U9s2eeiUfMaWBVoXA3AWskkrqK0VM=
 github.com/spf13/viper v1.7.0/go.mod h1:8WkrPz2fc9jxqZNCJI/76HCieCp4Q8HaLFoCha5qpdg=
 github.com/src-d/gcfg v1.4.0/go.mod h1:p/UMsR43ujA89BJY9duynAwIpvqEujIH/jFlfL7jWoI=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -479,6 +494,7 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/subosito/gotenv v1.2.0 h1:Slr1R9HxAlEKefgq5jn9U+DnETlIUa6HfgEzj0g5d7s=
 github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
 github.com/tcnksm/go-input v0.0.0-20180404061846-548a7d7a8ee8/go.mod h1:IlWNj9v/13q7xFbaK4mbyzMNwrZLaWSHx/aibKIZuIg=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
@@ -833,6 +849,7 @@ gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2/go.mod h1:Xk6kEKp8OKb+X14hQBKWaSkCsqBpgog8nAV2xsGOxlo=
 gopkg.in/ini.v1 v1.46.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/ini.v1 v1.51.0 h1:AQvPpx3LzTDM0AjnIRlVFwFFGC+npRopjZxLJj6gdno=
 gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/mgo.v2 v2.0.0-20160818015218-f2b6f6c918c4/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
 gopkg.in/mgo.v2 v2.0.0-20180705113604-9856a29383ce h1:xcEWjVhvbDy+nHP67nPDDpbYrY+ILlfndk4bRioVHaU=

internal/config/config.go

@@ -0,0 +1,34 @@
+package config
+
+import (
+	"fmt"
+
+	"github.com/spf13/viper"
+)
+
+// Config contains all the configuration parameters
+// known by iot-cloud-cli
+type Config struct {
+	// Client ID of the user
+	Client string `yaml:"client"`
+	// Secret ID of the user, unique for each Client ID
+	Secret string `yaml:"secret"`
+}
+
+// Retrieve returns the actual parameters contained in the
+// configuration file, if any. Returns error if no config file is found.
+func Retrieve() (*Config, error) {
+	conf := &Config{}
+	v := viper.New()
+	v.SetConfigName("config")
+	v.SetConfigType("yaml")
+	v.AddConfigPath(".")
+	err := v.ReadInConfig()
+	if err != nil {
+		err = fmt.Errorf("%s: %w", "retrieving config file", err)
+		return nil, err
+	}
+
+	v.Unmarshal(conf)
+	return conf, nil
+}