remove unneeded k8s code

There is a lot of unneeded code, k8s is the by far the biggest
dependency in podman. We should remove as much as possible so that we
only have the stuff left that we use.

This is just a quick skim over the code which removes a lot of the
generated code and many packages that are now unused.
I know that this will be impossible to properly review. I will try to
make smaller changes in follow up work.

Right now this reduces about 8 MB in binary size!!!

[NO NEW TESTS NEEDED] Hopefully existing tests will catch any problems.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

1 files changed, 0 insertions, 164 deletions

diff --git a/pkg/k8s.io/klog/klog_file.go b/pkg/k8s.io/klog/klog_file.go
deleted file mode 100644
index de830d922..000000000
--- a/pkg/k8s.io/klog/klog_file.go
+++ /dev/null
@@ -1,164 +0,0 @@
-// Go support for leveled logs, analogous to https://code.google.com/p/google-glog/
-//
-// Copyright 2013 Google Inc. All Rights Reserved.
-//
-// 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.
-
-// File I/O for logs.
-
-package klog
-
-import (
-	"errors"
-	"fmt"
-	"os"
-	"os/user"
-	"path/filepath"
-	"runtime"
-	"strings"
-	"sync"
-	"time"
-)
-
-// MaxSize is the maximum size of a log file in bytes.
-var MaxSize uint64 = 1024 * 1024 * 1800
-
-// logDirs lists the candidate directories for new log files.
-var logDirs []string
-
-func createLogDirs() {
-	if logging.logDir != "" {
-		logDirs = append(logDirs, logging.logDir)
-	}
-	logDirs = append(logDirs, os.TempDir())
-}
-
-var (
-	pid          = os.Getpid()
-	program      = filepath.Base(os.Args[0])
-	host         = "unknownhost"
-	userName     = "unknownuser"
-	userNameOnce sync.Once
-)
-
-func init() {
-	if h, err := os.Hostname(); err == nil {
-		host = shortHostname(h)
-	}
-}
-
-func getUserName() string {
-	userNameOnce.Do(func() {
-		// On Windows, the Go 'user' package requires netapi32.dll.
-		// This affects Windows Nano Server:
-		//   https://github.com/golang/go/issues/21867
-		// Fallback to using environment variables.
-		if runtime.GOOS == "windows" {
-			u := os.Getenv("USERNAME")
-			if len(u) == 0 {
-				return
-			}
-			// Sanitize the USERNAME since it may contain filepath separators.
-			u = strings.Replace(u, `\`, "_", -1)
-
-			// user.Current().Username normally produces something like 'USERDOMAIN\USERNAME'
-			d := os.Getenv("USERDOMAIN")
-			if len(d) != 0 {
-				userName = d + "_" + u
-			} else {
-				userName = u
-			}
-		} else {
-			current, err := user.Current()
-			if err == nil {
-				userName = current.Username
-			}
-		}
-	})
-
-	return userName
-}
-
-// shortHostname returns its argument, truncating at the first period.
-// For instance, given "www.google.com" it returns "www".
-func shortHostname(hostname string) string {
-	if i := strings.Index(hostname, "."); i >= 0 {
-		return hostname[:i]
-	}
-	return hostname
-}
-
-// logName returns a new log file name containing tag, with start time t, and
-// the name for the symlink for tag.
-func logName(tag string, t time.Time) (name, link string) {
-	name = fmt.Sprintf("%s.%s.%s.log.%s.%04d%02d%02d-%02d%02d%02d.%d",
-		program,
-		host,
-		getUserName(),
-		tag,
-		t.Year(),
-		t.Month(),
-		t.Day(),
-		t.Hour(),
-		t.Minute(),
-		t.Second(),
-		pid)
-	return name, program + "." + tag
-}
-
-var onceLogDirs sync.Once
-
-// create creates a new log file and returns the file and its filename, which
-// contains tag ("INFO", "FATAL", etc.) and t.  If the file is created
-// successfully, create also attempts to update the symlink for that tag, ignoring
-// errors.
-// The startup argument indicates whether this is the initial startup of klog.
-// If startup is true, existing files are opened for appending instead of truncated.
-func create(tag string, t time.Time, startup bool) (f *os.File, filename string, err error) {
-	if logging.logFile != "" {
-		f, err := openOrCreate(logging.logFile, startup)
-		if err == nil {
-			return f, logging.logFile, nil
-		}
-		return nil, "", fmt.Errorf("log: unable to create log: %v", err)
-	}
-	onceLogDirs.Do(createLogDirs)
-	if len(logDirs) == 0 {
-		return nil, "", errors.New("log: no log dirs")
-	}
-	name, link := logName(tag, t)
-	var lastErr error
-	for _, dir := range logDirs {
-		fname := filepath.Join(dir, name)
-		f, err := openOrCreate(fname, startup)
-		if err == nil {
-			symlink := filepath.Join(dir, link)
-			os.Remove(symlink)        // ignore err
-			os.Symlink(name, symlink) // ignore err
-			return f, fname, nil
-		}
-		lastErr = err
-	}
-	return nil, "", fmt.Errorf("log: cannot create log: %v", lastErr)
-}
-
-// The startup argument indicates whether this is the initial startup of klog.
-// If startup is true, existing files are opened for appending instead of truncated.
-func openOrCreate(name string, startup bool) (*os.File, error) {
-	if startup {
-		f, err := os.OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
-		return f, err
-	}
-	f, err := os.Create(name)
-	return f, err
-}