1 files changed, 149 insertions, 0 deletions

diff --git a/vendor/github.com/hashicorp/terraform/tfdiags/diagnostics.go b/vendor/github.com/hashicorp/terraform/tfdiags/diagnostics.go
index 667ba80..465b230 100644
--- a/vendor/github.com/hashicorp/terraform/tfdiags/diagnostics.go
+++ b/vendor/github.com/hashicorp/terraform/tfdiags/diagnostics.go
@@ -3,6 +3,9 @@ package tfdiags
 import (
         "bytes"
         "fmt"
+        "path/filepath"
+        "sort"
+        "strings"
 
         "github.com/hashicorp/errwrap"
         multierror "github.com/hashicorp/go-multierror"
@@ -54,6 +57,8 @@ func (diags Diagnostics) Append(new ...interface{}) Diagnostics {
                         diags = append(diags, ti...) // flatten
                 case diagnosticsAsError:
                         diags = diags.Append(ti.Diagnostics) // unwrap
+                case NonFatalError:
+                        diags = diags.Append(ti.Diagnostics) // unwrap
                 case hcl.Diagnostics:
                         for _, hclDiag := range ti {
                                 diags = append(diags, hclDiagnostic{hclDiag})
@@ -136,6 +141,54 @@ func (diags Diagnostics) Err() error {
         return diagnosticsAsError{diags}
 }
 
+// ErrWithWarnings is similar to Err except that it will also return a non-nil
+// error if the receiver contains only warnings.
+//
+// In the warnings-only situation, the result is guaranteed to be of dynamic
+// type NonFatalError, allowing diagnostics-aware callers to type-assert
+// and unwrap it, treating it as non-fatal.
+//
+// This should be used only in contexts where the caller is able to recognize
+// and handle NonFatalError. For normal callers that expect a lack of errors
+// to be signaled by nil, use just Diagnostics.Err.
+func (diags Diagnostics) ErrWithWarnings() error {
+        if len(diags) == 0 {
+                return nil
+        }
+        if diags.HasErrors() {
+                return diags.Err()
+        }
+        return NonFatalError{diags}
+}
+
+// NonFatalErr is similar to Err except that it always returns either nil
+// (if there are no diagnostics at all) or NonFatalError.
+//
+// This allows diagnostics to be returned over an error return channel while
+// being explicit that the diagnostics should not halt processing.
+//
+// This should be used only in contexts where the caller is able to recognize
+// and handle NonFatalError. For normal callers that expect a lack of errors
+// to be signaled by nil, use just Diagnostics.Err.
+func (diags Diagnostics) NonFatalErr() error {
+        if len(diags) == 0 {
+                return nil
+        }
+        return NonFatalError{diags}
+}
+
+// Sort applies an ordering to the diagnostics in the receiver in-place.
+//
+// The ordering is: warnings before errors, sourceless before sourced,
+// short source paths before long source paths, and then ordering by
+// position within each file.
+//
+// Diagnostics that do not differ by any of these sortable characteristics
+// will remain in the same relative order after this method returns.
+func (diags Diagnostics) Sort() {
+        sort.Stable(sortDiagnostics(diags))
+}
+
 type diagnosticsAsError struct {
         Diagnostics
 }
@@ -179,3 +232,99 @@ func (dae diagnosticsAsError) WrappedErrors() []error {
         }
         return errs
 }
+
+// NonFatalError is a special error type, returned by
+// Diagnostics.ErrWithWarnings and Diagnostics.NonFatalErr,
+// that indicates that the wrapped diagnostics should be treated as non-fatal.
+// Callers can conditionally type-assert an error to this type in order to
+// detect the non-fatal scenario and handle it in a different way.
+type NonFatalError struct {
+        Diagnostics
+}
+
+func (woe NonFatalError) Error() string {
+        diags := woe.Diagnostics
+        switch {
+        case len(diags) == 0:
+                // should never happen, since we don't create this wrapper if
+                // there are no diagnostics in the list.
+                return "no errors or warnings"
+        case len(diags) == 1:
+                desc := diags[0].Description()
+                if desc.Detail == "" {
+                        return desc.Summary
+                }
+                return fmt.Sprintf("%s: %s", desc.Summary, desc.Detail)
+        default:
+                var ret bytes.Buffer
+                if diags.HasErrors() {
+                        fmt.Fprintf(&ret, "%d problems:\n", len(diags))
+                } else {
+                        fmt.Fprintf(&ret, "%d warnings:\n", len(diags))
+                }
+                for _, diag := range woe.Diagnostics {
+                        desc := diag.Description()
+                        if desc.Detail == "" {
+                                fmt.Fprintf(&ret, "\n- %s", desc.Summary)
+                        } else {
+                                fmt.Fprintf(&ret, "\n- %s: %s", desc.Summary, desc.Detail)
+                        }
+                }
+                return ret.String()
+        }
+}
+
+// sortDiagnostics is an implementation of sort.Interface
+type sortDiagnostics []Diagnostic
+
+var _ sort.Interface = sortDiagnostics(nil)
+
+func (sd sortDiagnostics) Len() int {
+        return len(sd)
+}
+
+func (sd sortDiagnostics) Less(i, j int) bool {
+        iD, jD := sd[i], sd[j]
+        iSev, jSev := iD.Severity(), jD.Severity()
+        iSrc, jSrc := iD.Source(), jD.Source()
+
+        switch {
+
+        case iSev != jSev:
+                return iSev == Warning
+
+        case (iSrc.Subject == nil) != (jSrc.Subject == nil):
+                return iSrc.Subject == nil
+
+        case iSrc.Subject != nil && *iSrc.Subject != *jSrc.Subject:
+                iSubj := iSrc.Subject
+                jSubj := jSrc.Subject
+                switch {
+                case iSubj.Filename != jSubj.Filename:
+                        // Path with fewer segments goes first if they are different lengths
+                        sep := string(filepath.Separator)
+                        iCount := strings.Count(iSubj.Filename, sep)
+                        jCount := strings.Count(jSubj.Filename, sep)
+                        if iCount != jCount {
+                                return iCount < jCount
+                        }
+                        return iSubj.Filename < jSubj.Filename
+                case iSubj.Start.Byte != jSubj.Start.Byte:
+                        return iSubj.Start.Byte < jSubj.Start.Byte
+                case iSubj.End.Byte != jSubj.End.Byte:
+                        return iSubj.End.Byte < jSubj.End.Byte
+                }
+                fallthrough
+
+        default:
+                // The remaining properties do not have a defined ordering, so
+                // we'll leave it unspecified. Since we use sort.Stable in
+                // the caller of this, the ordering of remaining items will
+                // be preserved.
+                return false
+        }
+}
+
+func (sd sortDiagnostics) Swap(i, j int) {
+        sd[i], sd[j] = sd[j], sd[i]
+}