refactor: expose generated code and client business logic to share with Kapacitor (#103)

* refactor: take clients out of internal

* refactor: move stdio to pkg

* Move internal/api to api

* refactor: final changes for Kapacitor to access shared functionality

* chore: regenerate mocks

* fix: bad automated refactor

* chore: extra formatting not caught by make fmt

api/unmarshal_csv.go

@@ -0,0 +1,39 @@
+package api
+
+import (
+	"fmt"
+	"strings"
+)
+
+// UnmarshalCSV implements the gocsv.TypeUnmarshaller interface
+// for decoding CSV.
+func (v *ColumnSemanticType) UnmarshalCSV(s string) error {
+	types := []string{string(COLUMNSEMANTICTYPE_TIMESTAMP), string(COLUMNSEMANTICTYPE_TAG), string(COLUMNSEMANTICTYPE_FIELD)}
+	for _, t := range types {
+		if s == t {
+			*v = ColumnSemanticType(t)
+			return nil
+		}
+	}
+	return fmt.Errorf("%q is not a valid column type. Valid values are [%s]", s, strings.Join(types, ", "))
+}
+
+// UnmarshalCSV implements the gocsv.TypeUnmarshaller interface
+// for decoding CSV.
+func (v *ColumnDataType) UnmarshalCSV(s string) error {
+	types := []string{
+		string(COLUMNDATATYPE_INTEGER),
+		string(COLUMNDATATYPE_FLOAT),
+		string(COLUMNDATATYPE_BOOLEAN),
+		string(COLUMNDATATYPE_STRING),
+		string(COLUMNDATATYPE_UNSIGNED),
+	}
+
+	for _, t := range types {
+		if s == t {
+			*v = ColumnDataType(t)
+			return nil
+		}
+	}
+	return fmt.Errorf("%q is not a valid column data type. Valid values are [%s]", s, strings.Join(types, ", "))
+}