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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
// Author: arnej
package defaults
import (
"fmt"
"os"
"strconv"
"strings"
"github.com/vespa-engine/vespa/client/go/internal/admin/envvars"
"github.com/vespa-engine/vespa/client/go/internal/admin/trace"
)
const (
DEFAULT_VESPA_HOME = "/opt/vespa"
DEFAULT_VESPA_USER = "vespa"
DEFAULT_VESPA_HOST = "localhost"
DEFAULT_VESPA_PORT_BASE = 19000
CONFIGSERVER_RPC_PORT_OFFSET = 70
CONFIGPROXY_RPC_PORT_OFFSET = 90
DEFAULT_WEB_SERVICE_PORT = 8080
)
// Compute the path prefix where Vespa files will live.
// Note: does not end with "/"
func VespaHome() string {
if env := os.Getenv(envvars.VESPA_HOME); env != "" {
return env
}
return DEFAULT_VESPA_HOME
}
func UnderVespaHome(p string) string {
if strings.HasPrefix(p, "/") || strings.HasPrefix(p, "./") {
return p
}
return fmt.Sprintf("%s/%s", VespaHome(), p)
}
// Compute the user name to own directories and run processes.
func VespaUser() string {
if env := os.Getenv(envvars.VESPA_USER); env != "" {
return env
}
return DEFAULT_VESPA_USER
}
// Compute the host name that identifies myself.
// Detection of the hostname is now done before starting any Vespa
// programs and provided in the environment variable VESPA_HOSTNAME;
// if that variable isn't set a default of "localhost" is always returned.
func VespaHostname() string {
if env := os.Getenv(envvars.VESPA_HOSTNAME); env != "" {
return env
}
return DEFAULT_VESPA_HOST
}
func VespaLogFile() string {
if env := os.Getenv(envvars.VESPA_LOG_TARGET); env != "" {
if strings.HasPrefix(env, "file:") {
return strings.TrimPrefix(env, "file:")
}
}
return UnderVespaHome("logs/vespa/vespa.log")
}
// Compute the port number where the Vespa webservice
// container should be available.
func VespaContainerWebServicePort() int {
p := getNumFromEnv(envvars.VESPA_WEB_SERVICE_PORT)
if p > 0 {
trace.Debug(envvars.VESPA_WEB_SERVICE_PORT, p)
return p
}
return DEFAULT_WEB_SERVICE_PORT
}
// Compute the base for port numbers where the Vespa services should listen.
func VespaPortBase() int {
p := getNumFromEnv(envvars.VESPA_PORT_BASE)
if p > 0 {
trace.Debug(envvars.VESPA_PORT_BASE, p)
return p
}
return DEFAULT_VESPA_PORT_BASE
}
// Find the hostnames of configservers that are configured.
func VespaConfigserverHosts() []string {
parts := splitVespaConfigservers()
rv := make([]string, len(parts))
for idx, part := range parts {
if colon := strings.Index(part, ":"); colon > 0 {
rv[idx] = part[0:colon]
} else {
rv[idx] = part
}
trace.Debug("config server host:", rv[idx])
}
return rv
}
func findConfigserverHttpPort() int {
return findConfigserverRpcPort() + 1
}
// Find the RPC addresses to configservers that are configured.
// Returns a list of RPC specs in the format tcp/{hostname}:{portnumber}
func VespaConfigserverRpcAddrs() []string {
parts := splitVespaConfigservers()
rv := make([]string, len(parts))
for idx, part := range parts {
if colon := strings.Index(part, ":"); colon > 0 {
rv[idx] = fmt.Sprintf("tcp/%s", part)
} else {
rv[idx] = fmt.Sprintf("tcp/%s:%d", part, findConfigserverRpcPort())
}
trace.Debug("config server rpc addr:", rv[idx])
}
return rv
}
// Find the URLs to the REST api on configservers
// Returns a list of URLS in the format http://{hostname}:{portnumber}/
func VespaConfigserverRestUrls() []string {
parts := splitVespaConfigservers()
rv := make([]string, len(parts))
for idx, hostnm := range parts {
port := findConfigserverHttpPort()
if colon := strings.Index(hostnm, ":"); colon > 0 {
p, err := strconv.Atoi(hostnm[colon+1:])
if err == nil && p > 0 {
port = p + 1
}
hostnm = hostnm[:colon]
}
rv[idx] = fmt.Sprintf("http://%s:%d", hostnm, port)
trace.Debug("config server rest url:", rv[idx])
}
return rv
}
// Find the RPC address to the local config proxy
// Returns one RPC spec in the format tcp/{hostname}:{portnumber}
func VespaConfigProxyRpcAddr() string {
return fmt.Sprintf("tcp/localhost:%d", findConfigproxyRpcPort())
}
// Get the RPC addresses to all known config sources
// Returns same as vespaConfigProxyRpcAddr + vespaConfigserverRpcAddrs
func VespaConfigSourcesRpcAddrs() []string {
cs := VespaConfigserverRpcAddrs()
rv := make([]string, 0, len(cs)+1)
rv = append(rv, VespaConfigProxyRpcAddr())
for _, addr := range cs {
rv = append(rv, addr)
}
return rv
}
func splitVespaConfigservers() []string {
env := os.Getenv(envvars.VESPA_CONFIGSERVERS)
if env == "" {
env = os.Getenv(envvars.ADDR_CONFIGSERVER)
}
parts := make([]string, 0, 3)
for {
idx := strings.IndexAny(env, " ,")
if idx < 0 {
break
}
if idx > 0 {
parts = append(parts, env[:idx])
}
env = env[idx+1:]
}
if env != "" {
parts = append(parts, env)
}
if len(parts) == 0 {
parts = append(parts, "localhost")
}
return parts
}
func findConfigproxyRpcPort() int {
p := getNumFromEnv(envvars.CONFIGPROXY_RPC_PORT)
if p > 0 {
return p
}
return VespaPortBase() + CONFIGPROXY_RPC_PORT_OFFSET
}
func findConfigserverRpcPort() int {
p := getNumFromEnv(envvars.CONFIGSERVER_RPC_PORT)
if p > 0 {
trace.Debug(envvars.CONFIGSERVER_RPC_PORT, p)
return p
}
return VespaPortBase() + CONFIGSERVER_RPC_PORT_OFFSET
}
func getNumFromEnv(vn string) int {
env := os.Getenv(vn)
if env != "" {
p, err := strconv.Atoi(env)
if err == nil {
return p
}
trace.Debug("env var", vn, "is:", env, "parse error:", err)
}
return -1
}
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