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protocol.go
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/
protocol.go
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// Copyright (c) 2016 Tigera, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package numorstring
type Protocol Uint8OrString
// ProtocolFromInt creates a Protocol struct from an integer value.
func ProtocolFromInt(p uint8) Protocol {
return Protocol(
Uint8OrString{Type: NumOrStringNum, NumVal: p},
)
}
// ProtocolFromString creates a Protocol struct from a string value.
func ProtocolFromString(p string) Protocol {
return Protocol(
Uint8OrString{Type: NumOrStringString, StrVal: p},
)
}
// UnmarshalJSON implements the json.Unmarshaller interface.
func (p *Protocol) UnmarshalJSON(b []byte) error {
return (*Uint8OrString)(p).UnmarshalJSON(b)
}
// MarshalJSON implements the json.Marshaller interface.
func (p Protocol) MarshalJSON() ([]byte, error) {
return Uint8OrString(p).MarshalJSON()
}
// String returns the string value, or the Itoa of the int value.
func (p Protocol) String() string {
return (Uint8OrString)(p).String()
}
// NumValue returns the NumVal if type Int, or if
// it is a String, will attempt a conversion to int.
func (p Protocol) NumValue() (uint8, error) {
return (Uint8OrString)(p).NumValue()
}
// SupportsProtocols returns whether this protocol supports ports. This returns true if
// the numerical or string verion of the protocol indicates TCP (6) or UDP (17).
func (p Protocol) SupportsPorts() bool {
num, err := p.NumValue()
if err == nil {
return num == 6 || num == 17
} else {
return p.StrVal == "tcp" || p.StrVal == "udp"
}
}