consul/testing/deployer/sprawl/internal/tfgen/proxy.go

88 lines
2.0 KiB
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1
package tfgen
import (
"fmt"
"os"
"path/filepath"
"github.com/hashicorp/consul/testing/deployer/topology"
"github.com/hashicorp/consul/testing/deployer/util"
)
const proxyInternalPort = 80
func (g *Generator) writeNginxConfig(net *topology.Network) (bool, string, error) {
rootdir := filepath.Join(g.workdir, "terraform", "nginx-config-"+net.Name)
if err := os.MkdirAll(rootdir, 0755); err != nil {
return false, "", err
}
configFile := filepath.Join(rootdir, "nginx.conf")
body := fmt.Sprintf(`
server {
listen %d;
location / {
resolver 8.8.8.8;
##############
# Relevant config knobs are here: https://nginx.org/en/docs/http/ngx_http_proxy_module.html
##############
proxy_pass http://$http_host$uri$is_args$args;
proxy_cache off;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_connect_timeout 5s;
proxy_read_timeout 5s;
proxy_send_timeout 5s;
proxy_request_buffering off;
proxy_buffering off;
}
}
`, proxyInternalPort)
_, err := UpdateFileIfDifferent(
g.logger,
[]byte(body),
configFile,
0644,
)
if err != nil {
return false, "", fmt.Errorf("error writing %q: %w", configFile, err)
}
hash, err := util.HashFile(configFile)
if err != nil {
return false, "", fmt.Errorf("error hashing %q: %w", configFile, err)
}
return true, hash, err
}
func (g *Generator) getForwardProxyContainer(
net *topology.Network,
ipAddress string,
hash string,
) Resource {
env := []string{"HASH_FILE_VALUE=" + hash}
proxy := struct {
Name string
DockerNetworkName string
InternalPort int
IPAddress string
Env []string
}{
Name: net.Name,
DockerNetworkName: net.DockerName,
InternalPort: proxyInternalPort,
IPAddress: ipAddress,
Env: env,
}
return Eval(tfForwardProxyT, &proxy)
}