News features and improvements (#8)

* added config file implementation, refactoring

* add gitignore

* improved test

* preperations for more metrics

* added resource metrics

* added first bgp metrics

* added asn as label for bgp metrics

* added prefix and message counts to bgp metrics

* simplified

* Update README.md

* added yaml dependency

* fixed go routine call

* added timeout

* clean up

* added TLS support

* set default api port for TLS

* added routes metric

* added missing log information

config/config.go

@@ -0,0 +1,34 @@
+package config
+
+import (
+	"io"
+	"io/ioutil"
+
+	yaml "gopkg.in/yaml.v2"
+)
+
+type Config struct {
+	Devices []Device `yaml:"devices"`
+}
+
+type Device struct {
+	Name     string `yaml:"name"`
+	Address  string `yaml:"address"`
+	User     string `yaml:"user"`
+	Password string `yaml:"password"`
+}
+
+func Load(r io.Reader) (*Config, error) {
+	b, err := ioutil.ReadAll(r)
+	if err != nil {
+		return nil, err
+	}
+
+	c := &Config{}
+	err = yaml.Unmarshal(b, c)
+	if err != nil {
+		return nil, err
+	}
+
+	return c, nil
+}

config/config_test.go

@@ -0,0 +1,49 @@
+package config
+
+import (
+	"bytes"
+	"io/ioutil"
+	"testing"
+)
+
+func TestShouldParse(t *testing.T) {
+	b := loadTestFile(t)
+	c, err := Load(bytes.NewReader(b))
+	if err != nil {
+		t.Fatalf("could not parse: %v", err)
+	}
+
+	if len(c.Devices) != 2 {
+		t.Fatalf("expected 2 devices, got %v", len(c.Devices))
+	}
+
+	assertConfig("test1", "192.168.1.1", "foo", "bar", c.Devices[0], t)
+	assertConfig("test2", "192.168.2.1", "test", "123", c.Devices[1], t)
+}
+
+func loadTestFile(t *testing.T) []byte {
+	b, err := ioutil.ReadFile("test/config.test.yml")
+	if err != nil {
+		t.Fatalf("could not load config: %v", err)
+	}
+
+	return b
+}
+
+func assertConfig(name, address, user, password string, c Device, t *testing.T) {
+	if c.Name != name {
+		t.Fatalf("expected name %s, got %s", name, c.Name)
+	}
+
+	if c.Address != address {
+		t.Fatalf("expected address %s, got %s", address, c.Address)
+	}
+
+	if c.User != user {
+		t.Fatalf("expected user %s, got %s", user, c.User)
+	}
+
+	if c.Password != password {
+		t.Fatalf("expected password %s, got %s", password, c.Password)
+	}
+}

config/test/config.test.yml

@@ -0,0 +1,11 @@
+---
+
+devices:
+  - name: test1
+    address: 192.168.1.1
+    user: foo
+    password: bar
+  - name: test2
+    address: 192.168.2.1
+    user: test
+    password: 123