!11 增加riscv架构支持

From: @laokz 
Reviewed-by: @yangzhao_kl 
Signed-off-by: @yangzhao_kl

add_cpuinfo_parsing_for_riscv.patch

@@ -0,0 +1,65 @@
+commit 9e1fd818c15d3fd2f64cf594c3abb5df0885b1e0
+Author: Tobias Klauser <tklauser@distanz.ch>
+Date:   Wed Jul 22 11:52:26 2020 +0200
+
+    Add CPUInfo parsing for RISCV
+    
+    Currently only 64-bit RISCV is supported (GOARCH=riscv64) by the Go
+    compiler, but the cpuinfo format would be the same for 32-bit RISCV.
+    
+    Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
+
+---
+Rebased on node-exporter 1.0.1 by laokz <zhangkai@iscas.ac.cn>
+
+diff --git a/vendor/github.com/prometheus/procfs/cpuinfo.go b/vendor/github.com/prometheus/procfs/cpuinfo.go
+index 935157e..b9fb589 100644
+--- a/vendor/github.com/prometheus/procfs/cpuinfo.go
++++ b/vendor/github.com/prometheus/procfs/cpuinfo.go
+@@ -407,6 +407,46 @@ func parseCPUInfoPPC(info []byte) ([]CPUInfo, error) {
+ 	return cpuinfo, nil
+ }
+ 
++func parseCPUInfoRISCV(info []byte) ([]CPUInfo, error) {
++	scanner := bufio.NewScanner(bytes.NewReader(info))
++
++	firstLine := firstNonEmptyLine(scanner)
++	if !strings.HasPrefix(firstLine, "processor") || !strings.Contains(firstLine, ":") {
++		return nil, errors.New("invalid cpuinfo file: " + firstLine)
++	}
++	field := strings.SplitN(firstLine, ": ", 2)
++	v, err := strconv.ParseUint(field[1], 0, 32)
++	if err != nil {
++		return nil, err
++	}
++	firstcpu := CPUInfo{Processor: uint(v)}
++	cpuinfo := []CPUInfo{firstcpu}
++	i := 0
++
++	for scanner.Scan() {
++		line := scanner.Text()
++		if !strings.Contains(line, ":") {
++			continue
++		}
++		field := strings.SplitN(line, ": ", 2)
++		switch strings.TrimSpace(field[0]) {
++		case "processor":
++			v, err := strconv.ParseUint(field[1], 0, 32)
++			if err != nil {
++				return nil, err
++			}
++			i = int(v)
++			cpuinfo = append(cpuinfo, CPUInfo{}) // start of the next processor
++			cpuinfo[i].Processor = uint(v)
++		case "hart":
++			cpuinfo[i].CoreID = field[1]
++		case "isa":
++			cpuinfo[i].ModelName = field[1]
++		}
++	}
++	return cpuinfo, nil
++}
++
+ // firstNonEmptyLine advances the scanner to the first non-empty line
+ // and returns the contents of that line
+ func firstNonEmptyLine(scanner *bufio.Scanner) string {

fix_build_on_riscv.patch

@@ -0,0 +1,39 @@
+commit 910e68572b35da779e4f84cfa5261b0a67532d05
+Author: Tobias Klauser <tklauser@distanz.ch>
+Date:   Mon Sep 7 12:37:51 2020 +0200
+
+    Fix build on RISCV
+    
+    PR #318 forgot to wire parseCPUInfo to parseCPUInfoRISCV on
+    GOARCH=riscv{,64}, leading to a build/test failure:
+    
+    ./cpuinfo.go:71:9: undefined: parseCPUInfo
+    ./cpuinfo_test.go:222:2: undefined: parseCPUInfo
+    
+    Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
+
+diff --git a/vendor/github.com/prometheus/procfs/cpuinfo_riscvx.go b/vendor/github.com/prometheus/procfs/cpuinfo_riscvx.go
+new file mode 100644
+index 0000000..e83c2e2
+--- /dev/null
++++ b/vendor/github.com/prometheus/procfs/cpuinfo_riscvx.go
+@@ -0,0 +1,19 @@
++// Copyright 2020 The Prometheus Authors
++// 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.
++
++// +build linux
++// +build riscv riscv64
++
++package procfs
++
++var parseCPUInfo = parseCPUInfoRISCV

golang-github-prometheus-node_exporter.spec

@@ -27,7 +27,7 @@
 
 Name:           golang-%{provider}-%{project}-%{repo}
 Version:        1.0.1
-Release:        2
+Release:        3
 Summary:        Exporter for machine metrics
 License:        ASL 2.0
 URL:            https://%{provider_prefix}
@@ -36,13 +36,16 @@ Source1:        sysconfig.node_exporter
 Source2:        node_exporter.service
 Source3:        node_exporter_textfile_wrapper.sh
 Source4:        textfile_collectors_README
+Patch0:         add_cpuinfo_parsing_for_riscv.patch
+Patch1:         fix_build_on_riscv.patch
 
 Provides:       node_exporter = %{version}-%{release}
 
 BuildRequires:  systemd
+Requires:       shadow coreutils
 
 # e.g. el6 has ppc64 arch without gcc-go, so EA tag is required
-ExclusiveArch:  %{?go_arches:%{go_arches}}%{!?go_arches:%{ix86} x86_64 aarch64 %{arm}}
+ExclusiveArch:  %{?go_arches:%{go_arches}}%{!?go_arches:%{ix86} x86_64 aarch64 %{arm} riscv64}
 
 %description
 %{summary}
@@ -88,7 +91,7 @@ providing packages with %{import_path} prefix.
 %endif
 
 %prep
-%setup -q -n %{repo}-%{version}
+%autosetup -p1 -n %{repo}-%{version}
 mkdir -p _build/src/%{provider}.%{provider_tld}/%{project}
 ln -s $(pwd) _build/src/%{provider_prefix}
 
@@ -248,6 +251,10 @@ chmod 771 /var/lib/node_exporter/textfile_collector
 %endif
 
 %changelog
+* Wed Feb 15 2023 laokz <zhangkai@iscas.ac.cn> - 1.0.1-3
+- Add runtime requires: shadow coreutils
+- Backport 1.1.0(procfs-0.3.0) patches to support riscv64
+
 * Sat Feb 20 2021 yangzhao <yangzhao1@kylinos.cn> - 1.0.1-2
 - Remove unnecessary requirements