/
ingress.go
151 lines (130 loc) · 3.34 KB
/
ingress.go
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package dockerimpl
import (
"fmt"
"os"
"path/filepath"
"github.com/friendsofgo/errors"
"github.com/samber/lo"
log "github.com/sirupsen/logrus"
"gopkg.in/yaml.v2"
"github.com/traPtitech/neoshowcase/pkg/domain"
"github.com/traPtitech/neoshowcase/pkg/domain/web"
)
type (
m map[string]any
a []any
)
func (b *Backend) routerBase(website *domain.Website, svcName string) (router m, middlewares m) {
middlewares = make(m)
var entrypoints []string
if website.HTTPS {
entrypoints = append(entrypoints, web.TraefikHTTPSEntrypoint)
} else {
entrypoints = append(entrypoints, web.TraefikHTTPEntrypoint)
}
var middlewareNames []string
authConfig := b.targetAuth(website.FQDN)
if authConfig != nil {
switch website.Authentication {
case domain.AuthenticationTypeSoft:
middlewareNames = append(middlewareNames, authConfig.Soft...)
case domain.AuthenticationTypeHard:
middlewareNames = append(middlewareNames, authConfig.Hard...)
}
} else if website.Authentication != domain.AuthenticationTypeOff {
log.Warnf("auth config not available for %s", website.FQDN)
}
var rule string
if website.PathPrefix == "/" {
rule = fmt.Sprintf("Host(`%s`)", website.FQDN)
} else {
rule = fmt.Sprintf("Host(`%s`) && PathPrefix(`%s`)", website.FQDN, website.PathPrefix)
if website.StripPrefix {
middlewareName := stripMiddlewareName(website)
middlewareNames = append(middlewareNames, middlewareName)
middlewares[middlewareName] = m{
"stripPrefix": m{
"prefixes": []string{website.PathPrefix},
},
}
}
}
router = m{
"entrypoints": entrypoints,
"middlewares": middlewareNames,
"rule": rule,
"service": svcName,
}
if website.HTTPS {
targetDomain := b.config.TLS.Wildcard.Domains.TLSTargetDomain(website)
router["tls"] = m{
"certResolver": b.config.TLS.CertResolver,
"domains": a{
m{"main": targetDomain},
},
}
}
return router, middlewares
}
type runtimeConfigBuilder struct {
routers m
middlewares m
services m
}
func newRuntimeConfigBuilder() *runtimeConfigBuilder {
return &runtimeConfigBuilder{
routers: make(m),
middlewares: make(m),
services: make(m),
}
}
func (b *runtimeConfigBuilder) addWebsite(backend *Backend, app *domain.Application, website *domain.Website) {
svcName := traefikName(website)
router, middlewares := backend.routerBase(website, svcName)
netName := networkName(app.ID)
svc := m{
"loadBalancer": m{
"servers": a{
m{"url": fmt.Sprintf(
"%s://%s:%d/",
lo.Ternary(website.H2C, "h2c", "http"),
netName,
website.HTTPPort,
)},
},
},
}
b.routers[svcName] = router
for name, mw := range middlewares {
b.middlewares[name] = mw
}
b.services[svcName] = svc
}
func (b *runtimeConfigBuilder) build() m {
http := make(m)
if len(b.routers) > 0 {
http["routers"] = b.routers
}
if len(b.middlewares) > 0 {
http["middlewares"] = b.middlewares
}
if len(b.services) > 0 {
http["services"] = b.services
}
if len(http) == 0 {
return nil
}
return m{
"http": http,
}
}
func (b *Backend) writeConfig(filename string, config any) error {
file, err := os.OpenFile(filepath.Join(b.config.ConfDir, filename), os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0644)
if err != nil {
return errors.Wrap(err, "failed to open config file")
}
defer file.Close()
enc := yaml.NewEncoder(file)
defer enc.Close()
return enc.Encode(config)
}