feat: migrate from Cedar to SpiceDB authorization system

This is a major architectural change that replaces the Cedar policy-based
authorization system with SpiceDB's relation-based authorization.

Key changes:

- Migrate from Rust to Go implementation
- Replace Cedar policies with SpiceDB schema and relationships
- Switch from envoy `ext_authz` with Cedar to SpiceDB permission checks
- Update build system and dependencies for Go ecosystem
- Maintain Envoy integration for external authorization

This change enables more flexible permission modeling through SpiceDB's
Google Zanzibar inspired relation-based system, supporting complex
hierarchical permissions that were difficult to express in Cedar.

Breaking change: Existing Cedar policies and Rust-based configuration
will no longer work and need to be migrated to SpiceDB schema.

1 files changed, 90 insertions, 0 deletions

diff --git a/vendor/github.com/google/yamlfmt/content_analyzer.go b/vendor/github.com/google/yamlfmt/content_analyzer.go
new file mode 100644
index 00000000..4083e6b8
--- /dev/null
+++ b/vendor/github.com/google/yamlfmt/content_analyzer.go
@@ -0,0 +1,90 @@
+// Copyright 2024 Google LLC
+//
+// 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 yamlfmt
+
+import (
+	"os"
+	"regexp"
+
+	"github.com/google/yamlfmt/internal/collections"
+)
+
+type ContentAnalyzer interface {
+	ExcludePathsByContent(paths []string) ([]string, []string, error)
+}
+
+type BasicContentAnalyzer struct {
+	RegexPatterns []*regexp.Regexp
+}
+
+func NewBasicContentAnalyzer(patterns []string) (BasicContentAnalyzer, error) {
+	analyzer := BasicContentAnalyzer{RegexPatterns: []*regexp.Regexp{}}
+	compileErrs := collections.Errors{}
+	for _, pattern := range patterns {
+		re, err := regexp.Compile(pattern)
+		if err != nil {
+			compileErrs = append(compileErrs, err)
+			continue
+		}
+		analyzer.RegexPatterns = append(analyzer.RegexPatterns, re)
+	}
+	return analyzer, compileErrs.Combine()
+}
+
+func (a BasicContentAnalyzer) ExcludePathsByContent(paths []string) ([]string, []string, error) {
+	pathsToFormat := collections.SliceToSet(paths)
+	pathsExcluded := []string{}
+	pathErrs := collections.Errors{}
+
+	for _, path := range paths {
+		content, err := os.ReadFile(path)
+		if err != nil {
+			pathErrs = append(pathErrs, err)
+			continue
+		}
+
+		// Search metadata for ignore
+		metadata, mdErrs := ReadMetadata(content, path)
+		if len(mdErrs) != 0 {
+			pathErrs = append(pathErrs, mdErrs...)
+		}
+		ignoreFound := false
+		for md := range metadata {
+			if md.Type == MetadataIgnore {
+				ignoreFound = true
+				break
+			}
+		}
+		if ignoreFound {
+			pathsExcluded = append(pathsExcluded, path)
+			pathsToFormat.Remove(path)
+			continue
+		}
+
+		// Check if content matches any regex
+		matched := false
+		for _, pattern := range a.RegexPatterns {
+			if pattern.Match(content) {
+				matched = true
+			}
+		}
+		if matched {
+			pathsExcluded = append(pathsExcluded, path)
+			pathsToFormat.Remove(path)
+		}
+	}
+
+	return pathsToFormat.ToSlice(), pathsExcluded, pathErrs.Combine()
+}