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atlantis/server/events/markdown_renderer.go

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// Copyright 2017 HootSuite Media Inc.
//
// 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.
// Modified hereafter by contributors to runatlantis/atlantis.
package events
import (
"bytes"
"embed"
"fmt"
"strings"
"text/template"
"github.com/Masterminds/sprig/v3"
"github.com/runatlantis/atlantis/server/events/command"
"github.com/runatlantis/atlantis/server/events/models"
"golang.org/x/text/cases"
"golang.org/x/text/language"
)
var (
planCommandTitle = command.Plan.TitleString()
applyCommandTitle = command.Apply.TitleString()
policyCheckCommandTitle = command.PolicyCheck.TitleString()
approvePoliciesCommandTitle = command.ApprovePolicies.TitleString()
versionCommandTitle = command.Version.TitleString()
importCommandTitle = command.Import.TitleString()
stateCommandTitle = command.State.TitleString()
// maxUnwrappedLines is the maximum number of lines the Terraform output
// can be before we wrap it in an expandable template.
maxUnwrappedLines = 12
//go:embed templates/*
templatesFS embed.FS
)
// MarkdownRenderer renders responses as markdown.
type MarkdownRenderer struct {
// gitlabSupportsCommonMark is true if the version of GitLab we're
// using supports the CommonMark markdown format.
// If we're not configured with a GitLab client, this will be false.
gitlabSupportsCommonMark bool
disableApplyAll bool
disableApply bool
disableMarkdownFolding bool
disableRepoLocking bool
enableDiffMarkdownFormat bool
markdownTemplates *template.Template
executableName string
hideUnchangedPlanComments bool
quietPolicyChecks bool
}
// commonData is data that all responses have.
type commonData struct {
Command string
SubCommand string
Verbose bool
Log string
PlansDeleted bool
DisableApplyAll bool
DisableApply bool
DisableRepoLocking bool
EnableDiffMarkdownFormat bool
ExecutableName string
HideUnchangedPlanComments bool
QuietPolicyChecks bool
VcsRequestType string
}
// errData is data about an error response.
type errData struct {
Error string
RenderedContext string
commonData
}
// failureData is data about a failure response.
type failureData struct {
Failure string
RenderedContext string
commonData
}
type resultData struct {
Results []projectResultTmplData
commonData
}
type planResultData struct {
Results []projectResultTmplData
commonData
NumPlansWithChanges int
NumPlansWithNoChanges int
NumPlanFailures int
}
type applyResultData struct {
Results []projectResultTmplData
commonData
NumApplySuccesses int
NumApplyFailures int
NumApplyErrors int
}
type planSuccessData struct {
models.PlanSuccess
PlanSummary string
PlanWasDeleted bool
DisableApply bool
DisableRepoLocking bool
EnableDiffMarkdownFormat bool
PlanStats models.PlanSuccessStats
}
type policyCheckResultsData struct {
models.PolicyCheckResults
PreConftestOutput string
PostConftestOutput string
PolicyCheckSummary string
PolicyApprovalSummary string
PolicyCleared bool
commonData
}
type projectResultTmplData struct {
Workspace string
RepoRelDir string
ProjectName string
Rendered string
NoChanges bool
IsSuccessful bool
}
// Initialize templates
func NewMarkdownRenderer(
gitlabSupportsCommonMark bool,
disableApplyAll bool,
disableApply bool,
disableMarkdownFolding bool,
disableRepoLocking bool,
enableDiffMarkdownFormat bool,
markdownTemplateOverridesDir string,
executableName string,
hideUnchangedPlanComments bool,
quietPolicyChecks bool,
) *MarkdownRenderer {
var templates *template.Template
templates, _ = template.New("").Funcs(sprig.TxtFuncMap()).ParseFS(templatesFS, "templates/*.tmpl")
if overrides, err := templates.ParseGlob(fmt.Sprintf("%s/*.tmpl", markdownTemplateOverridesDir)); err == nil {
// doesn't override if templates directory doesn't exist
templates = overrides
}
return &MarkdownRenderer{
gitlabSupportsCommonMark: gitlabSupportsCommonMark,
disableApplyAll: disableApplyAll,
disableMarkdownFolding: disableMarkdownFolding,
disableApply: disableApply,
disableRepoLocking: disableRepoLocking,
enableDiffMarkdownFormat: enableDiffMarkdownFormat,
markdownTemplates: templates,
executableName: executableName,
hideUnchangedPlanComments: hideUnchangedPlanComments,
quietPolicyChecks: quietPolicyChecks,
}
}
// Render formats the data into a markdown string.
// nolint: interfacer
func (m *MarkdownRenderer) Render(ctx *command.Context, res command.Result, cmd PullCommand) string {
commandStr := cases.Title(language.English).String(strings.Replace(cmd.CommandName().String(), "_", " ", -1))
var vcsRequestType string
if ctx.Pull.BaseRepo.VCSHost.Type == models.Gitlab {
vcsRequestType = "Merge Request"
} else {
vcsRequestType = "Pull Request"
}
common := commonData{
Command: commandStr,
SubCommand: cmd.SubCommandName(),
Verbose: cmd.IsVerbose(),
Log: ctx.Log.GetHistory(),
PlansDeleted: res.PlansDeleted,
DisableApplyAll: m.disableApplyAll || m.disableApply,
DisableApply: m.disableApply,
DisableRepoLocking: m.disableRepoLocking,
EnableDiffMarkdownFormat: m.enableDiffMarkdownFormat,
ExecutableName: m.executableName,
HideUnchangedPlanComments: m.hideUnchangedPlanComments,
QuietPolicyChecks: m.quietPolicyChecks,
VcsRequestType: vcsRequestType,
}
templates := m.markdownTemplates
if res.Error != nil {
return m.renderTemplateTrimSpace(templates.Lookup("unwrappedErrWithLog"), errData{res.Error.Error(), "", common})
}
if res.Failure != "" {
return m.renderTemplateTrimSpace(templates.Lookup("failureWithLog"), failureData{res.Failure, "", common})
}
return m.renderProjectResults(ctx, res.ProjectResults, common)
}
func (m *MarkdownRenderer) renderProjectResults(ctx *command.Context, results []command.ProjectResult, common commonData) string {
vcsHost := ctx.Pull.BaseRepo.VCSHost.Type
var resultsTmplData []projectResultTmplData
numPlanSuccesses := 0
numPolicyCheckSuccesses := 0
numPolicyApprovalSuccesses := 0
numVersionSuccesses := 0
numPlansWithChanges := 0
numPlansWithNoChanges := 0
numApplySuccesses := 0
numApplyFailures := 0
numApplyErrors := 0
templates := m.markdownTemplates
for _, result := range results {
resultData := projectResultTmplData{
Workspace: result.Workspace,
RepoRelDir: result.RepoRelDir,
ProjectName: result.ProjectName,
IsSuccessful: result.IsSuccessful(),
}
if result.PlanSuccess != nil {
result.PlanSuccess.TerraformOutput = strings.TrimSpace(result.PlanSuccess.TerraformOutput)
data := planSuccessData{
PlanSuccess: *result.PlanSuccess,
PlanWasDeleted: common.PlansDeleted,
DisableApply: common.DisableApply,
DisableRepoLocking: common.DisableRepoLocking,
EnableDiffMarkdownFormat: common.EnableDiffMarkdownFormat,
PlanStats: result.PlanSuccess.Stats(),
}
if m.shouldUseWrappedTmpl(vcsHost, result.PlanSuccess.TerraformOutput) {
data.PlanSummary = result.PlanSuccess.Summary()
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("planSuccessWrapped"), data)
} else {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("planSuccessUnwrapped"), data)
}
resultData.NoChanges = result.PlanSuccess.NoChanges()
if result.PlanSuccess.NoChanges() {
numPlansWithNoChanges++
} else {
numPlansWithChanges++
}
numPlanSuccesses++
} else if result.PolicyCheckResults != nil && common.Command == policyCheckCommandTitle {
policyCheckResults := policyCheckResultsData{
PreConftestOutput: result.PolicyCheckResults.PreConftestOutput,
PostConftestOutput: result.PolicyCheckResults.PostConftestOutput,
PolicyCheckResults: *result.PolicyCheckResults,
PolicyCheckSummary: result.PolicyCheckResults.Summary(),
PolicyApprovalSummary: result.PolicyCheckResults.PolicySummary(),
PolicyCleared: result.PolicyCheckResults.PolicyCleared(),
commonData: common,
}
if m.shouldUseWrappedTmpl(vcsHost, result.PolicyCheckResults.CombinedOutput()) {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("policyCheckResultsWrapped"), policyCheckResults)
} else {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("policyCheckResultsUnwrapped"), policyCheckResults)
}
if result.Error == nil && result.Failure == "" {
numPolicyCheckSuccesses++
}
} else if result.PolicyCheckResults != nil && common.Command == approvePoliciesCommandTitle {
policyCheckResults := policyCheckResultsData{
PolicyCheckResults: *result.PolicyCheckResults,
PolicyCheckSummary: result.PolicyCheckResults.Summary(),
PolicyApprovalSummary: result.PolicyCheckResults.PolicySummary(),
PolicyCleared: result.PolicyCheckResults.PolicyCleared(),
commonData: common,
}
if m.shouldUseWrappedTmpl(vcsHost, result.PolicyCheckResults.CombinedOutput()) {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("policyCheckResultsWrapped"), policyCheckResults)
} else {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("policyCheckResultsUnwrapped"), policyCheckResults)
}
if result.Error == nil && result.Failure == "" {
numPolicyApprovalSuccesses++
}
} else if result.ApplySuccess != "" {
output := strings.TrimSpace(result.ApplySuccess)
if m.shouldUseWrappedTmpl(vcsHost, result.ApplySuccess) {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("applyWrappedSuccess"), struct{ Output string }{output})
} else {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("applyUnwrappedSuccess"), struct{ Output string }{output})
}
numApplySuccesses++
} else if result.VersionSuccess != "" {
output := strings.TrimSpace(result.VersionSuccess)
if m.shouldUseWrappedTmpl(vcsHost, output) {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("versionWrappedSuccess"), struct{ Output string }{output})
} else {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("versionUnwrappedSuccess"), struct{ Output string }{output})
}
numVersionSuccesses++
} else if result.ImportSuccess != nil {
result.ImportSuccess.Output = strings.TrimSpace(result.ImportSuccess.Output)
if m.shouldUseWrappedTmpl(vcsHost, result.ImportSuccess.Output) {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("importSuccessWrapped"), result.ImportSuccess)
} else {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("importSuccessUnwrapped"), result.ImportSuccess)
}
} else if result.StateRmSuccess != nil {
result.StateRmSuccess.Output = strings.TrimSpace(result.StateRmSuccess.Output)
if m.shouldUseWrappedTmpl(vcsHost, result.StateRmSuccess.Output) {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("stateRmSuccessWrapped"), result.StateRmSuccess)
} else {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("stateRmSuccessUnwrapped"), result.StateRmSuccess)
}
// Error out if no template was found, only if there are no errors or failures.
// This is because some errors and failures rely on additional context rendered by templates, but not all errors or failures.
} else if !(result.Error != nil || result.Failure != "") {
resultData.Rendered = "Found no template. This is a bug!"
}
// Render error or failure templates. Done outside of previous block so that other context can be rendered for use here.
if result.Error != nil {
tmpl := templates.Lookup("unwrappedErr")
if m.shouldUseWrappedTmpl(vcsHost, result.Error.Error()) {
tmpl = templates.Lookup("wrappedErr")
}
resultData.Rendered = m.renderTemplateTrimSpace(tmpl, errData{result.Error.Error(), resultData.Rendered, common})
if common.Command == applyCommandTitle {
numApplyErrors++
}
} else if result.Failure != "" {
resultData.Rendered = m.renderTemplateTrimSpace(templates.Lookup("failure"), failureData{result.Failure, resultData.Rendered, common})
if common.Command == applyCommandTitle {
numApplyFailures++
}
}
resultsTmplData = append(resultsTmplData, resultData)
}
var tmpl *template.Template
switch {
case len(resultsTmplData) == 1 && common.Command == planCommandTitle && numPlanSuccesses > 0:
tmpl = templates.Lookup("singleProjectPlanSuccess")
case len(resultsTmplData) == 1 && common.Command == planCommandTitle && numPlanSuccesses == 0:
tmpl = templates.Lookup("singleProjectPlanUnsuccessful")
case len(resultsTmplData) == 1 && common.Command == policyCheckCommandTitle && numPolicyCheckSuccesses > 0:
tmpl = templates.Lookup("singleProjectPlanSuccess")
case len(resultsTmplData) == 1 && common.Command == policyCheckCommandTitle && numPolicyCheckSuccesses == 0:
tmpl = templates.Lookup("singleProjectPolicyUnsuccessful")
case len(resultsTmplData) == 1 && common.Command == versionCommandTitle && numVersionSuccesses > 0:
tmpl = templates.Lookup("singleProjectVersionSuccess")
case len(resultsTmplData) == 1 && common.Command == versionCommandTitle && numVersionSuccesses == 0:
tmpl = templates.Lookup("singleProjectVersionUnsuccessful")
case len(resultsTmplData) == 1 && common.Command == applyCommandTitle:
tmpl = templates.Lookup("singleProjectApply")
case len(resultsTmplData) == 1 && common.Command == importCommandTitle:
tmpl = templates.Lookup("singleProjectImport")
case len(resultsTmplData) == 1 && common.Command == stateCommandTitle:
switch common.SubCommand {
case "rm":
tmpl = templates.Lookup("singleProjectStateRm")
default:
return fmt.Sprintf("no template matchedthis is a bug: command=%s, subcommand=%s", common.Command, common.SubCommand)
}
case common.Command == planCommandTitle:
tmpl = templates.Lookup("multiProjectPlan")
case common.Command == policyCheckCommandTitle:
if numPolicyCheckSuccesses == len(results) {
tmpl = templates.Lookup("multiProjectPolicy")
} else {
tmpl = templates.Lookup("multiProjectPolicyUnsuccessful")
}
case common.Command == approvePoliciesCommandTitle:
if numPolicyApprovalSuccesses == len(results) {
tmpl = templates.Lookup("approveAllProjects")
} else {
tmpl = templates.Lookup("multiProjectPolicyUnsuccessful")
}
case common.Command == applyCommandTitle:
tmpl = templates.Lookup("multiProjectApply")
case common.Command == versionCommandTitle:
tmpl = templates.Lookup("multiProjectVersion")
case common.Command == importCommandTitle:
tmpl = templates.Lookup("multiProjectImport")
case common.Command == stateCommandTitle:
switch common.SubCommand {
case "rm":
tmpl = templates.Lookup("multiProjectStateRm")
default:
return fmt.Sprintf("no template matchedthis is a bug: command=%s, subcommand=%s", common.Command, common.SubCommand)
}
default:
return fmt.Sprintf("no template matchedthis is a bug: command=%s", common.Command)
}
switch {
case common.Command == planCommandTitle:
numPlanFailures := len(results) - numPlanSuccesses
return m.renderTemplateTrimSpace(tmpl, planResultData{resultsTmplData, common, numPlansWithChanges, numPlansWithNoChanges, numPlanFailures})
case common.Command == applyCommandTitle:
return m.renderTemplateTrimSpace(tmpl, applyResultData{resultsTmplData, common, numApplySuccesses, numApplyFailures, numApplyErrors})
}
return m.renderTemplateTrimSpace(tmpl, resultData{resultsTmplData, common})
}
// shouldUseWrappedTmpl returns true if we should use the wrapped markdown
// templates that collapse the output to make the comment smaller on initial
// load. Some VCS providers or versions of VCS providers don't support this
// syntax.
func (m *MarkdownRenderer) shouldUseWrappedTmpl(vcsHost models.VCSHostType, output string) bool {
if m.disableMarkdownFolding {
return false
}
// Bitbucket Cloud and Server don't support the folding markdown syntax.
if vcsHost == models.BitbucketServer || vcsHost == models.BitbucketCloud {
return false
}
if vcsHost == models.Gitlab && !m.gitlabSupportsCommonMark {
return false
}
return strings.Count(output, "\n") > maxUnwrappedLines
}
func (m *MarkdownRenderer) renderTemplateTrimSpace(tmpl *template.Template, data interface{}) string {
buf := &bytes.Buffer{}
if err := tmpl.Execute(buf, data); err != nil {
return fmt.Sprintf("Failed to render template, this is a bug: %v", err)
}
return strings.TrimSpace(buf.String())
}