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node.go
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node.go
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/**
* Copyright 2021 Adobe. All rights reserved.
* This file is licensed to you 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 REPRESENTATIONS
* OF ANY KIND, either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*/
package types
import (
"bytes"
"crypto/x509"
"encoding/pem"
"fmt"
"io/ioutil"
)
const NODE_PING_DELAY = 10
var NodePingDuplicationErr = fmt.Errorf("Fish Node: Unable to join the Aquarium cluster due to " +
"the node with the same name pinged the cluster less then 2xNODE_PING_DELAY time ago")
func (n *Node) Init(node_address, cert_path string) error {
// Set the node external address
n.Address = node_address
// Read certificate's pubkey to put or compare
cert_bytes, err := ioutil.ReadFile(cert_path)
if err != nil {
return err
}
block, _ := pem.Decode(cert_bytes)
cert, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return err
}
pubkey_der, err := x509.MarshalPKIXPublicKey(cert.PublicKey)
if err != nil {
return err
}
// Update the pubkey once - it can not be changed for the node name for now,
// maybe later the process of key switch will be implemented
if n.Pubkey == nil {
// Set the pubkey once
n.Pubkey = &pubkey_der
} else {
// Validate the existing pubkey
if bytes.Compare(*n.Pubkey, pubkey_der) != 0 {
return fmt.Errorf("Fish Node: The pubkey was changed for Node, that's not supported")
}
}
// Collect the node definition data
n.Definition.Update()
return nil
}