add configuration layer for the whole app

.gitignore

@@ -6,3 +6,4 @@ dist/
 .DS_Store
 tmp
 localdns.db
+.localdns.yaml

.localdns.default.yaml

@@ -1,21 +1,20 @@
 ---
 
 # specify the external dns to resolve unknown domain names
-forward_to: 8.8.8.8:53
-
-# enable or disable local dns features
-features:
-  udp_enable: true
-  tcp_enabled: true
-  grpc_enabled: true
-  prometheus_enabled: true
+remote_server: 8.8.8.8:53
 
 # configuration per services exposed by localdns
 servers:
-  dns:
+  dns_tcp:
+    addr: :8053
+    enabled: true
+  dns_udp:
     addr: :8053
+    enabled: true
   grpc:
     addr: :8080
+    enabled: true
   prometheus:
     addr: :9090
+    enabled: true
 

README.md

@@ -11,10 +11,14 @@ But, the most powerful reason is **Just for fun**.
 
 ## Development
 
-`localdns` supports embedded databases like [sqlite](https://www.sqlite.org/index.html) for persistent storing.
+`localdns` uses [sqlite](https://www.sqlite.org/index.html) as storage layer.
 
 If you want to run your own instance of `localDNS`, go to the [releases page](https://github.com/mfuentesg/localdns/releases) and download the most convenient binary for you, or, clone this repo and execute `go run main.go` and the magic will start.
 
+### Config file
+
+`localdns` is fully configurable, just edit the autogenerated `.localdns.yaml` file and change it as your convenience.
+
 ### gRPC
 
 `localDNS` exposes a gRPC server in order, it brings you the flexibility to develop something awesome, like a custom UI to add/remove/edit records.

go.mod

@@ -7,9 +7,10 @@ require (
 	github.com/jmoiron/sqlx v1.3.4
 	github.com/miekg/dns v1.1.46
 	github.com/sirupsen/logrus v1.8.1
-	github.com/stretchr/testify v1.7.0
-	google.golang.org/grpc v1.44.0
-	google.golang.org/protobuf v1.27.1
+	github.com/spf13/viper v1.11.0
+	github.com/stretchr/testify v1.7.1
+	google.golang.org/grpc v1.45.0
+	google.golang.org/protobuf v1.28.0
 	modernc.org/sqlite v1.14.8
 )
 
@@ -19,16 +20,16 @@ require (
 	github.com/google/uuid v1.3.0 // indirect
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
 	github.com/kr/text v0.2.0 // indirect
-	github.com/mattn/go-isatty v0.0.12 // indirect
+	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0 // indirect
 	golang.org/x/mod v0.4.2 // indirect
-	golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd // indirect
-	golang.org/x/sys v0.0.0-20220307203707-22a9840ba4d7 // indirect
+	golang.org/x/net v0.0.0-20220412020605-290c469a71a5 // indirect
+	golang.org/x/sys v0.0.0-20220412211240-33da011f77ad // indirect
 	golang.org/x/text v0.3.7 // indirect
 	golang.org/x/tools v0.1.6-0.20210726203631-07bc1bf47fb2 // indirect
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
-	google.golang.org/genproto v0.0.0-20220218161850-94dd64e39d7c // indirect
+	golang.org/x/xerrors v0.0.0-20220411194840-2f41105eb62f // indirect
+	google.golang.org/genproto v0.0.0-20220407144326-9054f6ed7bac // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 	lukechampine.com/uint128 v1.1.1 // indirect
@@ -42,4 +43,19 @@ require (
 	modernc.org/token v1.0.0 // indirect
 )
 
-require github.com/mattn/go-sqlite3 v1.14.12 // indirect
+require (
+	github.com/fsnotify/fsnotify v1.5.1 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/magiconair/properties v1.8.6 // indirect
+	github.com/mattn/go-sqlite3 v1.14.12 // indirect
+	github.com/mitchellh/mapstructure v1.4.3 // indirect
+	github.com/pelletier/go-toml v1.9.4 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.0-beta.8 // indirect
+	github.com/spf13/afero v1.8.2 // indirect
+	github.com/spf13/cast v1.4.1 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/subosito/gotenv v1.2.0 // indirect
+	gopkg.in/ini.v1 v1.66.4 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)