os_windows.go

Documentation: go.opentelemetry.io/otel/sdk/resource

     1  // Copyright The OpenTelemetry Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package resource // import "go.opentelemetry.io/otel/sdk/resource"
    16  
    17  import (
    18  	"fmt"
    19  	"strconv"
    20  
    21  	"golang.org/x/sys/windows/registry"
    22  )
    23  
    24  // platformOSDescription returns a human readable OS version information string.
    25  // It does so by querying registry values under the
    26  // `SOFTWARE\Microsoft\Windows NT\CurrentVersion` key. The final string
    27  // resembles the one displayed by the Version Reporter Applet (winver.exe).
    28  func platformOSDescription() (string, error) {
    29  	k, err := registry.OpenKey(
    30  		registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Windows NT\CurrentVersion`, registry.QUERY_VALUE)
    31  
    32  	if err != nil {
    33  		return "", err
    34  	}
    35  
    36  	defer k.Close()
    37  
    38  	var (
    39  		productName               = readProductName(k)
    40  		displayVersion            = readDisplayVersion(k)
    41  		releaseID                 = readReleaseID(k)
    42  		currentMajorVersionNumber = readCurrentMajorVersionNumber(k)
    43  		currentMinorVersionNumber = readCurrentMinorVersionNumber(k)
    44  		currentBuildNumber        = readCurrentBuildNumber(k)
    45  		ubr                       = readUBR(k)
    46  	)
    47  
    48  	if displayVersion != "" {
    49  		displayVersion += " "
    50  	}
    51  
    52  	return fmt.Sprintf("%s %s(%s) [Version %s.%s.%s.%s]",
    53  		productName,
    54  		displayVersion,
    55  		releaseID,
    56  		currentMajorVersionNumber,
    57  		currentMinorVersionNumber,
    58  		currentBuildNumber,
    59  		ubr,
    60  	), nil
    61  }
    62  
    63  func getStringValue(name string, k registry.Key) string {
    64  	value, _, _ := k.GetStringValue(name)
    65  
    66  	return value
    67  }
    68  
    69  func getIntegerValue(name string, k registry.Key) uint64 {
    70  	value, _, _ := k.GetIntegerValue(name)
    71  
    72  	return value
    73  }
    74  
    75  func readProductName(k registry.Key) string {
    76  	return getStringValue("ProductName", k)
    77  }
    78  
    79  func readDisplayVersion(k registry.Key) string {
    80  	return getStringValue("DisplayVersion", k)
    81  }
    82  
    83  func readReleaseID(k registry.Key) string {
    84  	return getStringValue("ReleaseID", k)
    85  }
    86  
    87  func readCurrentMajorVersionNumber(k registry.Key) string {
    88  	return strconv.FormatUint(getIntegerValue("CurrentMajorVersionNumber", k), 10)
    89  }
    90  
    91  func readCurrentMinorVersionNumber(k registry.Key) string {
    92  	return strconv.FormatUint(getIntegerValue("CurrentMinorVersionNumber", k), 10)
    93  }
    94  
    95  func readCurrentBuildNumber(k registry.Key) string {
    96  	return getStringValue("CurrentBuildNumber", k)
    97  }
    98  
    99  func readUBR(k registry.Key) string {
   100  	return strconv.FormatUint(getIntegerValue("UBR", k), 10)
   101  }
   102
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