blob: eb2a8906767620c9f715da79bac592f50a38da85 [file] [log] [blame]
// Copyright 2018 The LUCI Authors.
//
// Licensed 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 CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package config
import (
"context"
"fmt"
"regexp"
"go.chromium.org/gae/service/datastore"
"go.chromium.org/gae/service/info"
"go.chromium.org/luci/common/errors"
"go.chromium.org/luci/common/logging"
configInterface "go.chromium.org/luci/config"
"go.chromium.org/luci/luci_notify/mailtmpl"
)
// emailTemplateFilenameRegexp returns a regular expression for email template
// file names.
func emailTemplateFilenameRegexp(c context.Context) *regexp.Regexp {
return regexp.MustCompile(fmt.Sprintf(
`^%s+/email-templates/([a-z][a-z0-9_]*)%s$`,
regexp.QuoteMeta(info.AppID(c)),
regexp.QuoteMeta(mailtmpl.FileExt),
))
}
// EmailTemplate is a Datastore entity directly under Project entity that
// represents an email template.
// It is managed by the cron job that ingests configs.
type EmailTemplate struct {
// ProjectKey is a datastore key of the LUCI project containing this email
// template.
ProjectKey *datastore.Key `gae:"$parent"`
// Name identifies the email template. It is unique within the project.
Name string `gae:"$id"`
// SubjectTextTemplate is a text.Template of the email subject.
SubjectTextTemplate string `gae:",noindex"`
// BodyHTMLTemplate is a html.Template of the email body.
BodyHTMLTemplate string `gae:",noindex"`
// DefinitionURL is a URL to human-viewable page that contains the definition
// of this email template.
DefinitionURL string `gae:",noindex"`
}
// Template converts t to *mailtmpl.Template.
func (t *EmailTemplate) Template() *mailtmpl.Template {
return &mailtmpl.Template{
Name: t.Name,
SubjectTextTemplate: t.SubjectTextTemplate,
BodyHTMLTemplate: t.BodyHTMLTemplate,
DefinitionURL: t.DefinitionURL,
}
}
// fetchAllEmailTemplates fetches all valid email templates of the project from
// a config service. Returned EmailTemplate entities do not have ProjectKey set.
func fetchAllEmailTemplates(c context.Context, configService configInterface.Interface, projectId string) (map[string]*EmailTemplate, error) {
configSet := configInterface.ProjectSet(projectId)
files, err := configService.ListFiles(c, configSet)
if err != nil {
return nil, err
}
ret := map[string]*EmailTemplate{}
// This runs in a cron job. It is not performance critical, so we don't have
// to fetch files concurrently.
filenameRegexp := emailTemplateFilenameRegexp(c)
for _, f := range files {
m := filenameRegexp.FindStringSubmatch(f)
if m == nil {
// Not a template file or a template of another instance of luci-notify.
continue
}
templateName := m[1]
logging.Infof(c, "fetching email template from %s:%s", configSet, f)
config, err := configService.GetConfig(c, configSet, f, false)
if err != nil {
return nil, errors.Annotate(err, "failed to fetch %q", f).Err()
}
subject, body, err := mailtmpl.SplitTemplateFile(config.Content)
if err != nil {
// Should not happen. luci-config should not have passed this commit in
// because luci-notify exposes its validation code to luci-conifg.
logging.Warningf(c, "invalid email template content in %q: %s", f, err)
continue
}
ret[templateName] = &EmailTemplate{
Name: templateName,
SubjectTextTemplate: subject,
BodyHTMLTemplate: body,
DefinitionURL: config.ViewURL,
}
}
return ret, nil
}