feat: add a unique id to dbc requests (#44)

closes #24 

I created github.com/columnar-tech/machine-id to get something a bit
better than creating and storing a GUID.

Author: zeroshade

drivers.go

@@ -11,6 +11,7 @@ import (
 	"net/url"
 	"os"
 	"path"
+	"path/filepath"
 	"runtime"
 	"runtime/debug"
 	"slices"
@@ -21,6 +22,8 @@ import (
 	"github.com/Masterminds/semver/v3"
 	"github.com/ProtonMail/gopenpgp/v3/crypto"
 	"github.com/goccy/go-yaml"
+	"github.com/google/uuid"
+	machineid "github.com/zeroshade/machine-id"
 )
 
 const defaultURL = "https://dbc-cdn.columnar.tech"
@@ -29,6 +32,8 @@ var (
 	baseURL   = defaultURL
 	Version   = "unknown"
 	userAgent string
+	mid       string
+	uid       uuid.UUID
 )
 
 func init() {
@@ -50,6 +55,41 @@ func init() {
 			userAgent += " CI"
 		}
 	}
+
+	mid, _ = machineid.ProtectedID()
+
+	// get user config dir
+	userdir, err := os.UserConfigDir()
+	if err != nil {
+		// if we can't get the dir for some reason, just generate a new UUID
+		uid = uuid.New()
+		return
+	}
+
+	// try to read the existing UUID file
+	dirname := "columnar"
+	if runtime.GOOS == "windows" || runtime.GOOS == "darwin" {
+		dirname = "Columnar"
+	}
+
+	fp := filepath.Join(userdir, dirname, "dbc", "uid.uuid")
+	data, err := os.ReadFile(fp)
+	if err == nil {
+		if err = uid.UnmarshalBinary(data); err == nil {
+			return
+		}
+	}
+
+	// if the file didn't exist or we couldn't parse it, generate a new uuid
+	// and then write a new file
+	uid = uuid.New()
+	// if we fail to create the dir or write the file, just ignore the error
+	// and use the fresh UUID
+	if err = os.MkdirAll(filepath.Dir(fp), 0o700); err == nil {
+		if data, err = uid.MarshalBinary(); err == nil {
+			os.WriteFile(fp, data, 0o600)
+		}
+	}
 }
 
 func makereq(u string) (resp *http.Response, err error) {
@@ -58,6 +98,11 @@ func makereq(u string) (resp *http.Response, err error) {
 		return nil, fmt.Errorf("failed to parse URL %s: %w", uri, err)
 	}
 
+	q := uri.Query()
+	q.Add("mid", mid)
+	q.Add("uid", uid.String())
+	uri.RawQuery = q.Encode()
+
 	req := http.Request{
 		Method: http.MethodGet,
 		URL:    uri,

go.mod

@@ -1,6 +1,8 @@
 module github.com/columnar-tech/dbc
 
-go 1.24.2
+go 1.24.4
+
+toolchain go1.24.6
 
 require (
 	github.com/Masterminds/semver/v3 v3.4.0
@@ -10,9 +12,11 @@ require (
 	github.com/charmbracelet/bubbletea v1.3.7
 	github.com/charmbracelet/lipgloss v1.1.0
 	github.com/goccy/go-yaml v1.17.1
+	github.com/google/uuid v1.6.0
 	github.com/pelletier/go-toml/v2 v2.2.4
 	github.com/stretchr/testify v1.10.0
-	golang.org/x/sys v0.34.0
+	github.com/zeroshade/machine-id v0.0.0-20250917170903-4283e98485ba
+	golang.org/x/sys v0.36.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
@@ -27,6 +31,7 @@ require (
 	github.com/charmbracelet/x/cellbuf v0.0.13 // indirect
 	github.com/charmbracelet/x/term v0.2.1 // indirect
 	github.com/cloudflare/circl v1.6.1 // indirect
+	github.com/columnar-tech/machine-id v0.0.0-20250917165521-f900c2b8afc9 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
 	github.com/kr/text v0.2.0 // indirect

go.sum

@@ -34,6 +34,8 @@ github.com/charmbracelet/x/term v0.2.1 h1:AQeHeLZ1OqSXhrAWpYUtZyX1T3zVxfpZuEQMIQ
 github.com/charmbracelet/x/term v0.2.1/go.mod h1:oQ4enTYFV7QN4m0i9mzHrViD7TQKvNEEkHUMCmsxdUg=
 github.com/cloudflare/circl v1.6.1 h1:zqIqSPIndyBh1bjLVVDHMPpVKqp8Su/V+6MeDzzQBQ0=
 github.com/cloudflare/circl v1.6.1/go.mod h1:uddAzsPgqdMAYatqJ0lsjX1oECcQLIlRpzZh3pJrofs=
+github.com/columnar-tech/machine-id v0.0.0-20250917165521-f900c2b8afc9 h1:RwPia8bI7oTl++lBMNT9EGCU2ICb4kN5uVJ9phl9Sak=
+github.com/columnar-tech/machine-id v0.0.0-20250917165521-f900c2b8afc9/go.mod h1:REaxLA5IqWLxjhHfVtYguP/4z4eKMZtf3KeYmPf68N0=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
@@ -42,6 +44,8 @@ github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f h1:Y/CXytFA4m6
 github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f/go.mod h1:vw97MGsxSvLiUE2X8qFplwetxpGLQrlU1Q9AUEIzCaM=
 github.com/goccy/go-yaml v1.17.1 h1:LI34wktB2xEE3ONG/2Ar54+/HJVBriAGJ55PHls4YuY=
 github.com/goccy/go-yaml v1.17.1/go.mod h1:XBurs7gK8ATbW4ZPGKgcbrY1Br56PdM69F7LkFRi1kA=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
@@ -76,14 +80,16 @@ github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOf
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM=
+github.com/zeroshade/machine-id v0.0.0-20250917170903-4283e98485ba h1:yStvOL+OyJJ41jmZVqHqAspXXr4VVKC3gIfnGvO/+Pw=
+github.com/zeroshade/machine-id v0.0.0-20250917170903-4283e98485ba/go.mod h1:RHX47A/DYmoTfyT25mb6C+Eve7X5miOporc+RVUoRoY=
 golang.org/x/crypto v0.38.0 h1:jt+WWG8IZlBnVbomuhg2Mdq0+BBQaHbtqHEFEigjUV8=
 golang.org/x/crypto v0.38.0/go.mod h1:MvrbAqul58NNYPKnOra203SB9vpuZW0e+RRZV+Ggqjw=
 golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561 h1:MDc5xs78ZrZr3HMQugiXOAkSZtfTpbJLDr/lwfgO53E=
 golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
 golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.34.0 h1:H5Y5sJ2L2JRdyv7ROF1he/lPdvFsd0mJHFw2ThKHxLA=
-golang.org/x/sys v0.34.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
+golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
 golang.org/x/text v0.25.0 h1:qVyWApTSYLk/drJRO5mDlNYskwQznZmkpV2c8q9zls4=
 golang.org/x/text v0.25.0/go.mod h1:WEdwpYrmk1qmdHvhkSTNPm3app7v4rsT8F2UD6+VHIA=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=