add vendoring with go dep

vendor/github.com/influxdata/influxdb/services/subscriber/config.go

@@ -0,0 +1,103 @@
+package subscriber
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/influxdata/influxdb/monitor/diagnostics"
+	"github.com/influxdata/influxdb/toml"
+)
+
+const (
+	// DefaultHTTPTimeout is the default HTTP timeout for a Config.
+	DefaultHTTPTimeout = 30 * time.Second
+
+	// DefaultWriteConcurrency is the default write concurrency for a Config.
+	DefaultWriteConcurrency = 40
+
+	// DefaultWriteBufferSize is the default write buffer size for a Config.
+	DefaultWriteBufferSize = 1000
+)
+
+// Config represents a configuration of the subscriber service.
+type Config struct {
+	// Whether to enable to Subscriber service
+	Enabled bool `toml:"enabled"`
+
+	HTTPTimeout toml.Duration `toml:"http-timeout"`
+
+	// InsecureSkipVerify gets passed to the http client, if true, it will
+	// skip https certificate verification. Defaults to false
+	InsecureSkipVerify bool `toml:"insecure-skip-verify"`
+
+	// configure the path to the PEM encoded CA certs file. If the
+	// empty string, the default system certs will be used
+	CaCerts string `toml:"ca-certs"`
+
+	// The number of writer goroutines processing the write channel.
+	WriteConcurrency int `toml:"write-concurrency"`
+
+	// The number of in-flight writes buffered in the write channel.
+	WriteBufferSize int `toml:"write-buffer-size"`
+}
+
+// NewConfig returns a new instance of a subscriber config.
+func NewConfig() Config {
+	return Config{
+		Enabled:            true,
+		HTTPTimeout:        toml.Duration(DefaultHTTPTimeout),
+		InsecureSkipVerify: false,
+		CaCerts:            "",
+		WriteConcurrency:   DefaultWriteConcurrency,
+		WriteBufferSize:    DefaultWriteBufferSize,
+	}
+}
+
+// Validate returns an error if the config is invalid.
+func (c Config) Validate() error {
+	if c.HTTPTimeout <= 0 {
+		return errors.New("http-timeout must be greater than 0")
+	}
+
+	if c.CaCerts != "" && !fileExists(c.CaCerts) {
+		abspath, err := filepath.Abs(c.CaCerts)
+		if err != nil {
+			return fmt.Errorf("ca-certs file %s does not exist. Wrapped Error: %v", c.CaCerts, err)
+		}
+		return fmt.Errorf("ca-certs file %s does not exist", abspath)
+	}
+
+	if c.WriteBufferSize <= 0 {
+		return errors.New("write-buffer-size must be greater than 0")
+	}
+
+	if c.WriteConcurrency <= 0 {
+		return errors.New("write-concurrency must be greater than 0")
+	}
+
+	return nil
+}
+
+func fileExists(fileName string) bool {
+	info, err := os.Stat(fileName)
+	return err == nil && !info.IsDir()
+}
+
+// Diagnostics returns a diagnostics representation of a subset of the Config.
+func (c Config) Diagnostics() (*diagnostics.Diagnostics, error) {
+	if !c.Enabled {
+		return diagnostics.RowFromMap(map[string]interface{}{
+			"enabled": false,
+		}), nil
+	}
+
+	return diagnostics.RowFromMap(map[string]interface{}{
+		"enabled":           true,
+		"http-timeout":      c.HTTPTimeout,
+		"write-concurrency": c.WriteConcurrency,
+		"write-buffer-size": c.WriteBufferSize,
+	}), nil
+}