"k8s.io/client-go/tools/cache"

	"istio.io/istio/pkg/config"
	"istio.io/istio/pkg/config/schema/gvk"
	istiolog "istio.io/istio/pkg/log"
)

var log = istiolog.RegisterScope("controllers", "common controller logic")

// Object is a union of runtime + meta objects. Essentially every k8s object meets this interface.
// and certainly all that we care about.
type Object interface {
	metav1.Object
	runtime.Object
}

TMP := $(shell mktemp -d -u)
UPDATE_BRANCH ?= "master"

BUILD_TOOLS_ORG ?= "istio"

update-common:
	@mkdir -p $(TMP)
	@git clone -q --depth 1 --single-branch --branch $(UPDATE_BRANCH) https://github.com/$(BUILD_TOOLS_ORG)/common-files $(TMP)/common-files
	@cd $(TMP)/common-files ; git rev-parse HEAD >files/common/.commonfiles.sha
	@rm -fr common
# istio/community has its own CONTRIBUTING.md file.

// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package typeparams contains common utilities for writing tools that
// interact with generic Go code, as introduced with Go 1.18. It
// supplements the standard library APIs. Notably, the StructuralTerms
// API computes a minimal representation of the structural
// restrictions on a type parameter.
//

# See the License for the specific language governing permissions and
# limitations under the License.

# shellcheck disable=SC2034 # Variables sourced in other scripts.

# Common utilities, variables and checks for all build scripts.
set -o errexit
set -o nounset
set -o pipefail

# Unset CDPATH, having it set messes up with script import paths
unset CDPATH

USER_ID=$(id -u)

	defer c.mutex.RUnlock()
	if c.SessionTicketsDisabled {
		return nil
	}
	c.initLegacySessionTicketKeyRLocked()
	if len(c.sessionTicketKeys) != 0 {
		return c.sessionTicketKeys
	}
	// Fast path for the common case where the key is fresh enough.
	if len(c.autoSessionTicketKeys) > 0 && c.time().Sub(c.autoSessionTicketKeys[0].created) < ticketKeyRotation {
		return c.autoSessionTicketKeys
	}

John Howard <******@****.***> 1713371920 -0700

	latest := ""

	// Find the common cardinality from previously collected
	// occurrences of elements.
	for etag, count := range etagOccurrenceMap {
		if count < maxima {
			continue
		}

		// We are at or above maxima
		if count > maxima {
			maxima = count
			latest = etag
		}
	}

	// Return the collected common max time, with maxima
	return latest, maxima
}

John Howard <******@****.***> 1713371920 -0700

Lubomir I. Ivanov <******@****.***> 1713791309 +0300

	if objInfo.ModTime.IsZero() || objInfo.ModTime.Equal(time.Unix(0, 0)) {
		return false
	}

	// Headers to be set of object content is not going to be written to the client.
	writeHeaders := func() {
		// set common headers
		setCommonHeaders(w)

		// set object-related metadata headers
		w.Header().Set(xhttp.LastModified, objInfo.ModTime.UTC().Format(http.TimeFormat))

		if objInfo.ETag != "" {