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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package remote
import (
"encoding/json"
"fmt"
"os"
)
type cloudHost struct {
// Name of the template - referenced by topology files
Name string
// Provider is the cloud provider (AWS, Azure, GCP)
Provider string
// Region for host (likely provider-specific)
Region string
// BaseConfiguration (provider-specific)
BaseConfiguration string
}
type cloudHosts struct {
Hosts []cloudHost
}
// HostTemplates contains a mapping (from name to cloudHost definition)
type HostTemplates struct {
Hosts map[string]cloudHost
}
// LoadHostTemplates returns a HostTemplates object populated from the definitions in templateFile
func LoadHostTemplates(templateFile string) (templates HostTemplates, err error) {
f, err := os.Open(templateFile)
if err != nil {
return
}
defer f.Close()
var hosts cloudHosts
dec := json.NewDecoder(f)
err = dec.Decode(&hosts)
if err != nil {
return
}
templates = HostTemplates{
Hosts: make(map[string]cloudHost),
}
for _, host := range hosts.Hosts {
if _, has := templates.Hosts[host.Name]; has {
return templates, fmt.Errorf("duplicate HostTemplate name '%s' encountered", host.Name)
}
templates.Hosts[host.Name] = host
}
return
}
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