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07070100000000000081A4000003E800000064000000015EB2C5B300000015000000000000000000000000000000000000002600000000exporter_exporter-0.4.0/.dockerignorepromu
github-release
07070100000001000081A4000003E800000064000000015EB2C5B30000013F000000000000000000000000000000000000002000000000exporter_exporter-0.4.0/AUTHORSBrian Brazil <brian.brazil@robustperception.io>
Brian Candler <b.candler@pobox.com>
Dan Poltawski <dan.poltawski@tnp.net.uk>
Kirill Shestakov <freyr.sh@gmail.com>
Laurie Clark-Michalek <laurie@qubit.com>
Linas <linas@daneliukas.eu>
Thomas Frössman <thomasf@jossystem.se>
Tristan Colgate-McFarlane <tcolgate@gmail.com>
07070100000002000081A4000003E800000064000000015EB2C5B3000000E6000000000000000000000000000000000000002300000000exporter_exporter-0.4.0/DockerfileFROM golang:1.14.2-alpine AS build
RUN mkdir /src
WORKDIR /src
COPY *.go go.mod go.sum /src/
RUN apk add git
RUN go build .

FROM alpine
COPY --from=build /src/exporter_exporter /usr/bin/
ENTRYPOINT ["/usr/bin/exporter_exporter"]
07070100000003000081A4000003E800000064000000015EB2C5B300002C5D000000000000000000000000000000000000002000000000exporter_exporter-0.4.0/LICENSE                                 Apache License
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07070100000004000081A4000003E800000064000000015EB2C5B3000011B6000000000000000000000000000000000000002100000000exporter_exporter-0.4.0/MakefileGITHUB_ORG  = QubitProducts
GITHUB_REPO = exporter_exporter
VERSION      = 0.4.0

DOCKER_REGISTRY     = qubitproducts
DOCKER_NAME         = exporter_exporter
DOCKER_IMAGE        = $(DOCKER_REGISTRY)/$(DOCKER_NAME):$(VERSION)
DOCKER_IMAGE_LATEST = $(DOCKER_REGISTRY)/$(DOCKER_NAME):latest

SHELL        := /usr/bin/env bash
GO           := go
FIRST_GOPATH := $(firstword $(subst :, ,$(GOPATH)))
FILES         = $(shell find . -name '*.go' | grep -v vendor)
PREFIX       ?= $(shell pwd)
BIN_DIR      ?= $(shell pwd)

PACKAGE_TARGET     = deb
PACKAGE_NAME       = expexp
PACKAGE_VERSION    = $(VERSION)
PACKAGE_REVISION   = 3
PACKAGE_ARCH       = amd64
PACKAGE_MAINTAINER = tristan@qubit.com
PACKAGE_FILE       = $(PACKAGE_NAME)_$(PACKAGE_VERSION)-$(PACKAGE_REVISION)_$(PACKAGE_ARCH).$(PACKAGE_TARGET)
BINNAME            = exporter_exporter

PWD := $(shell pwd)

all: package
clean:
	rm -f $(PACKAGE_FILE)
	rm -rf dist
	rm -rf build

.PHONY: test
test:
	echo ">> running short tests"
	$(GO) test -short $(pkgs)

.PHONY: test-static
test-static:
	echo ">> running static tests"
	$(GO) vet $(pkgs)
	[[ "$(shell gofmt -l $(files))" == "" ]] || (echo "gofmt check failed"; exit 1)

.PHONY: format
format:
	echo ">> formatting code"
	$(GO) fmt $(pkgs)

.PHONY: vet
vet:
	echo ">> vetting code"
	$(GO) vet $(pkgs)

.PHONY: prepare-package clean-package package
prepare-package: clean-package build/$(BINNAME)-$(VERSION).linux-amd64/$(BINNAME)
	mkdir -p dist/usr/local/bin
	mkdir -p dist/etc/init
	mkdir -p dist/etc/default
	mkdir -p dist/etc/exporter_exporter.d/
	install -m755 build/$(BINNAME)-$(VERSION).linux-amd64/$(BINNAME) dist/usr/local/bin/$(BINNAME)
	install -m644 $(BINNAME).conf dist/etc/init/$(BINNAME).conf
	install -m644 $(BINNAME).defaults dist/etc/default/$(BINNAME)
	install -m644 expexp.yaml dist/etc/exporter_exporter.yaml
	touch dist/etc/exporter_exporter.d/.dir

clean-package:
	rm -rf dist

.PHONY: AUTHORS
AUTHORS:
	# There's only so much credit I need.
	git log --format='%aN <%aE>' | grep -v Tristan\ Colgate\  | sort -u > AUTHORS

$(PACKAGE_FILE): prepare-package
	cd dist && \
	  fpm \
	  -t $(PACKAGE_TARGET) \
	  -m $(PACKAGE_MAINTAINER) \
	  -n $(PACKAGE_NAME) \
	  -a $(PACKAGE_ARCH) \
	  -v $(PACKAGE_VERSION) \
	  --iteration $(PACKAGE_REVISION) \
	  --config-files /etc/$(BINNAME).yaml \
	  --config-files /etc/init/$(BINNAME).conf \
	  --config-files /etc/default/$(BINNAME) \
	  -s dir \
	  -p ../$(PACKAGE_FILE) \
	  .

.PHONY: build-docker release-docker
build-docker: 
	docker build -t $(DOCKER_IMAGE) .

release-docker: build-docker
	docker push $(DOCKER_IMAGE)
	docker tag $(DOCKER_IMAGE) $(DOCKER_IMAGE_LATEST)
	docker push $(DOCKER_IMAGE_LATEST)

LDFLAGS = -X main.Version=$(VERSION) \
					-X main.Branch=$(BRANCH) \
					-X main.Revision=$(REVISION) \
					-X main.BuildUser=$(BUILDUSER) \
					-X main.BuildDate=$(BUILDDATE)

build/$(BINNAME)-$(VERSION).windows-amd64/$(BINNAME).exe: $(SRCS)
	GOOS=$* GOARCH=amd64 $(GO) build \
	 -ldflags "$(LDFLAGS)" \
	 -o $@ \
	 .
build/$(BINNAME)-$(VERSION).windows-amd64.zip: build/expoter_exporter-$(VERSION).windows-amd64/$(BINNAME).exe
	zip $@ $<

build/$(BINNAME)-$(VERSION).%-amd64/$(BINNAME): $(SRCS)
	GOOS=$* GOARCH=amd64 $(GO) build \
	 -ldflags  "$(LDFLAGS)" \
	 -o $@ \
	 .

build/$(BINNAME)-$(VERSION).%-amd64.tar.gz: build/$(BINNAME)-$(VERSION).%-amd64/$(BINNAME)
	cd build && \
		tar cfzv $(BINNAME)-$(VERSION).$*-amd64.tar.gz $(BINNAME)-$(VERSION).$*-amd64

package: $(PACKAGE_FILE)

package-release: $(PACKAGE_FILE)
	go run github.com/aktau/github-release upload \
	  -u $(GITHUB_ORG) \
	 	-r $(GITHUB_REPO) \
	 	--tag v$(VERSION) \
		--name $(PACKAGE_FILE) \
		--file $(PACKAGE_FILE)

release-windows: build/exporter_exporter-$(VERSION).windows-amd64.zip
	go run github.com/aktau/github-release upload \
		-u $(GITHUB_ORG) \
		-r $(GITHUB_REPO) \
		--tag v$(VERSION) \
		--name exporter_exporter-$(VERSION).windows-amd64.zip \
		-f ./build/exporter_exporter-$(VERSION).windows-amd64.zip

release-%: build/exporter_exporter-$(VERSION).%-amd64.tar.gz
	go run github.com/aktau/github-release upload \
		-u $(GITHUB_ORG) \
		-r $(GITHUB_REPO) \
		--tag v$(VERSION) \
		--name exporter_exporter-$(VERSION).$*-amd64.tar.gz \
		-f ./build/exporter_exporter-$(VERSION).$*-amd64.tar.gz

release: 
	git tag v$(VERSION)
	git push origin v$(VERSION)
	go run github.com/aktau/github-release release \
		-u $(GITHUB_ORG) \
		-r $(GITHUB_REPO) \
		--tag v$(VERSION) \
		--name v$(VERSION)
	make release-darwin release-linux release-windows package-release
07070100000005000081A4000003E800000064000000015EB2C5B30000002C000000000000000000000000000000000000001F00000000exporter_exporter-0.4.0/NOTICEexporter_exporter
Copyright 2016 Qubit Ltd.
07070100000006000081A4000003E800000064000000015EB2C5B300001B2B000000000000000000000000000000000000002200000000exporter_exporter-0.4.0/README.md# Exporter Exporter - prometheus exporter proxy

```   "you mean apache/nginx" - bbrazil ```

This provides a simple reverse proxy for prometheus exporters. It is intended as a
single binary alternative to nginx/apache for use in environments where opening multiple
TCP ports to all servers might be difficult (technically or politically)

The advantages are:

- A single port can be used to query multiple exporters (to ease firewall configuration concerns).
- Can provide TLS with optional client certificate authentication.
- Provides verification that the target is serving prometheus metrics.
- Can be used to execute scripts that produce prometheus metrics.
- _up_ behaviour is the same as for querying individual collectors.
- Small code size, minimal external depedencies, easily auditable.

The exporter has three endpoints.

- /: displays a list of all exporters with links to their metrics.
  - Returns JSON if the header "Accept: application/json" is passed

- /proxy: which takes the following parameters:
  - module: the name of the module from the configuration to execute.
  - args (optional): arguments to pass to the module.
  - params (optional): named parameter to pass to the module (either as CLI args, or http parameters).

- /metrics: this exposes the metrics for the collector itself.

Features that will NOT be included:

- merging of module outputs into one query (this would break _up_ behaviour)

## Installation

You can build directly using a plain ```go get github.com/QubitProducts/exporter_exporter```.
The provided Makefile is primarily used for releases.

Pre-built binaries and a debian package are available on the [GitHub release page](https://github.com/QubitProducts/exporter_exporter/releases).

An ansible recipe as also [available](https://github.com/umanit/ansible-prometheus_exporter_exporter) (kindly provided by one of our users).

TODO:

- Config reload on HUP (or POST, or config file change?)
- route to a docker/rocket container by name

### Windows Service

The binary can be installed as a Windows service by supplying the `-winsvc install` arg.
All other arguments passed along with `-winsvc install` will be added to the service startup 
and can only be changed by uninstalling/installing it again (or modifying the Windows registry directly).

## Configuration

In expexp.yaml list each exporter listening on localhost with its known port.

```
modules:
  node:
    method: http
    http:
       port: 9100

mtail:
    method: http
    http:
       port: 3903
       headers:
          foo: bar

cadvisor:
    verify: false
    method: http
    http:
       port: 4194
  
  netdata:
    method: http
    http:
       port: 19999
       path: '/api/v1/allmetrics?format=prometheus'

somescript:
    method: exec
    timeout: 1s
    exec:
      command: /tmp/myscript.sh
      args:
        - "myarg1"
        - "myarg2"
      env:
        THING: "1"
        THING2: "2"
```

In your prometheus configuration

```
scrape_configs:
  - job_name: 'expexp_metrics'
    scrape_interval: 1s
    static_configs:
      - targets: ['host:9999']
  - job_name: 'cadvisor'
    scrape_interval: 5s
    metrics_path: /proxy
    params:
      module:
        - cadvisor
    static_configs:
      - targets: ['host:9999']
  - job_name: 'mtail'
    scrape_interval: 5s
    metrics_path: /proxy
    params:
      module:
        - mtail
    static_configs:
      - targets: ['host:9999']
  - job_name: 'somescript'
    scrape_interval: 5s
    metrics_path: /proxy
    params:
      module:
        - somescript
    static_configs:
      - targets: ['host:9999']
```

## Directory-based configuration

You can also specify `-config.dirs` to break the configuration into separate
files.  The module name is taken from the name of the file (minus the
yml/yaml extension), and the configuration for that module goes in at the
top level.

```
==> expexp.yaml <==
modules: {}

==> expexp.d/node.yaml <==
method: http
http:
   port: 9100

==> expexp.d/mtail.yaml <==
method: http
http:
   port: 3903
```

## TLS configuration

You can use exporter_exporter with TLS to encrypt the traffic, and at the
same time enforce strong mutual authentication between the nodes and the
prometheus server.

Note that `-web.tls.verify` will accept *any* certificate signed by the
`-web.tls.ca`, so you need to create a separate CA for this purpose - or use
a self-signed certificate, which acts as its own CA.

Here is a simple configuration example, using one key/cert for the
prometheus server and one key/cert shared between all the remote nodes.
Firstly, create the keys and certs:

```
openssl req -x509 -newkey rsa:1024 -keyout prom_node_key.pem -out prom_node_cert.pem -days 29220 -nodes -subj /commonName=prom_node/
openssl req -x509 -newkey rsa:1024 -keyout prometheus_key.pem -out prometheus_cert.pem -days 29220 -nodes -subj /commonName=prometheus/
```

Create an `/etc/prometheus/ssl/` directory on the prometheus server and all
the remote nodes.  Install both cert.pem files everywhere.  It is safe for
them to be world-readable.

Install `prom_node_key.pem` only on the nodes, and set file permissions to
protect it so that only exporter_exporter can read it.  Similarly, install
`prometheus_key.pem` only on the prometheus server, and set permissions so
that only the prometheus process can read it.

Configuration for exporter_exporter on the nodes (here it also disables
plain HTTP):

```
EXPEXP_FLAGS='-web.listen-address= -web.tls.listen-address=:9998
 -web.tls.cert=/etc/prometheus/ssl/prom_node_cert.pem
 -web.tls.key=/etc/prometheus/ssl/prom_node_key.pem
 -web.tls.ca=/etc/prometheus/ssl/prometheus_cert.pem
 -web.tls.verify'
```

To test, use `curl` to make a scrape, replacing x.x.x.x with the IP address
of the target:

```
curl --cert /etc/prometheus/ssl/prometheus_cert.pem \
     --key /etc/prometheus/ssl/prometheus_key.pem \
     --cacert /etc/prometheus/ssl/prom_node_cert.pem \
     --resolve prom_node:9998:x.x.x.x \
     -v https://prom_node:9998/proxy?module=node
```

When this is working, configure your prometheus server to use https. Example:

```
  - job_name: node
    scrape_interval: 1m
    scrape_timeout: 50s
    file_sd_configs:
      - files:
        - /etc/prometheus/targets.d/node_targets.yml
    scheme: https
    tls_config:
      # Verifying remote identity
      ca_file: /etc/prometheus/ssl/prom_node_cert.pem
      server_name: prom_node
      # Asserting our identity
      cert_file: /etc/prometheus/ssl/prometheus_cert.pem
      key_file: /etc/prometheus/ssl/prometheus_key.pem
    metrics_path: /proxy
    params:
      module: [ node ]
    relabel_configs:
      - source_labels: [__address__]
        target_label: instance
      - source_labels: [__address__]
        regex: '[^:]+'
        target_label: __address__
        replacement: '${1}:9998'
```

Example `/etc/prometheus/targets.d/node_targets.yml`:

```
- labels: []
  targets:
  - 192.0.2.1
  - 192.0.2.2
```
07070100000007000081A4000003E800000064000000015EB2C5B300001580000000000000000000000000000000000000002200000000exporter_exporter-0.4.0/config.go// Copyright 2016 Qubit Ltd.
// 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 main

import (
	"bytes"
	"crypto/tls"
	"crypto/x509"
	"fmt"
	"io"
	"io/ioutil"
	"net/http"
	"net/http/httputil"
	"time"

yaml "gopkg.in/yaml.v2"
)

type config struct {
	Global struct {
	}
	Modules map[string]*moduleConfig
	XXX     map[string]interface{} `yaml:",inline"`

bearerToken   string
	proxyPath     string
	telemetryPath string
}

type moduleConfig struct {
	Method  string                 `yaml:"method"`
	Timeout time.Duration          `yaml:"timeout"`
	XXX     map[string]interface{} `yaml:",inline"`

Exec execConfig `yaml:"exec"`
	HTTP httpConfig `yaml:"http"`

name string
}

type httpConfig struct {
	Verify                *bool                  `yaml:"verify"`                   // no default
	TLSInsecureSkipVerify bool                   `yaml:"tls_insecure_skip_verify"` // false
	TLSCertFile           *string                `yaml:"tls_cert_file"`            // no default
	TLSKeyFile            *string                `yaml:"tls_key_file"`             // no default
	TLSCACertFile         *string                `yaml:"tls_ca_cert_file"`         // no default
	Port                  int                    `yaml:"port"`                     // no default
	Path                  string                 `yaml:"path"`                     // /metrics
	Scheme                string                 `yaml:"scheme"`                   // http
	Address               string                 `yaml:"address"`                  // 127.0.0.1
	Headers               map[string]string      `yaml:"headers"`                  // no default
	XXX                   map[string]interface{} `yaml:",inline"`

tlsConfig              *tls.Config
	mcfg                   *moduleConfig
	*httputil.ReverseProxy `json:"-"`
}

type execConfig struct {
	Command string                 `yaml:"command"`
	Args    []string               `yaml:"args"`
	Env     map[string]string      `yaml:"env"`
	XXX     map[string]interface{} `yaml:",inline"`

mcfg *moduleConfig
}

func readConfig(r io.Reader) (*config, error) {
	buf := bytes.Buffer{}
	io.Copy(&buf, r)
	cfg := config{}

err := yaml.Unmarshal(buf.Bytes(), &cfg)

if len(cfg.XXX) != 0 {
		return nil, fmt.Errorf("Unknown configuration fields: %v", cfg.XXX)
	}

for s := range cfg.Modules {
		if err := checkModuleConfig(s, cfg.Modules[s]); err != nil {
			return nil, fmt.Errorf("bad config for module %s, %w", s, err)
		}
	}

return &cfg, err
}

func readModuleConfig(name string, r io.Reader) (*moduleConfig, error) {
	buf := bytes.Buffer{}
	io.Copy(&buf, r)
	cfg := moduleConfig{}

err := yaml.Unmarshal(buf.Bytes(), &cfg)
	if err != nil {
		return nil, err
	}

if err = checkModuleConfig(name, &cfg); err != nil {
		return nil, err
	}

return &cfg, nil
}

func checkModuleConfig(name string, cfg *moduleConfig) error {
	if len(cfg.XXX) != 0 {
		return fmt.Errorf("unknown module configuration fields: %v", cfg.XXX)
	}

cfg.name = name

switch cfg.Method {
	case "http":
		if len(cfg.HTTP.XXX) != 0 {
			return fmt.Errorf("Unknown http module configuration fields: %v", cfg.HTTP.XXX)
		}

if cfg.HTTP.Port == 0 {
			return fmt.Errorf("module %v must have a non-zero port set", name)
		}
		if cfg.HTTP.Verify == nil {
			v := true
			cfg.HTTP.Verify = &v
		}
		if cfg.HTTP.Scheme == "" {
			cfg.HTTP.Scheme = "http"
		}
		if cfg.HTTP.Path == "" {
			cfg.HTTP.Path = "/metrics"
		}
		if cfg.HTTP.Address == "" {
			cfg.HTTP.Address = "localhost"
		}

tlsConfig, err := cfg.HTTP.getTLSConfig()
		if err != nil {
			return fmt.Errorf("could not create tls config, %w", err)
		}

dirFunc, err := cfg.getReverseProxyDirectorFunc()
		if err != nil {
			return err
		}

cfg.HTTP.tlsConfig = tlsConfig
		cfg.HTTP.ReverseProxy = &httputil.ReverseProxy{
			Transport:    &http.Transport{TLSClientConfig: tlsConfig},
			Director:     dirFunc,
			ErrorHandler: cfg.getReverseProxyErrorHandlerFunc(),
		}
		if *cfg.HTTP.Verify {
			cfg.HTTP.ReverseProxy.ModifyResponse = cfg.getReverseProxyModifyResponseFunc()
		}
	case "exec":
		if len(cfg.Exec.XXX) != 0 {
			return fmt.Errorf("Unknown exec module configuration fields: %v", cfg.Exec.XXX)
		}
	default:
		return fmt.Errorf("Unknown module method: %v", cfg.Method)
	}

return nil
}

func (c httpConfig) getTLSConfig() (*tls.Config, error) {
	config := &tls.Config{
		InsecureSkipVerify: c.TLSInsecureSkipVerify,
		MinVersion:         tls.VersionTLS12,
	}
	if c.TLSCACertFile != nil {
		caCert, err := ioutil.ReadFile(*c.TLSCACertFile)
		if err != nil {
			return nil, fmt.Errorf("could not read ca from %v, %w", *c.TLSCACertFile, err)
		}

config.ClientCAs = x509.NewCertPool()
		config.ClientCAs.AppendCertsFromPEM(caCert)
	}
	if c.TLSCertFile != nil && c.TLSKeyFile != nil {
		cert, err := tls.LoadX509KeyPair(*c.TLSCertFile, *c.TLSKeyFile)
		if err != nil {
			return nil, fmt.Errorf("failed reading TLS credentials, %w", err)
		}
		config.Certificates = []tls.Certificate{cert}
	}

return config, nil
}
07070100000008000081A4000003E800000064000000015EB2C5B300000AAC000000000000000000000000000000000000002000000000exporter_exporter-0.4.0/exec.go// Copyright 2016 Qubit Ltd.
// 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 main

import (
	"bytes"
	"context"
	"fmt"
	"net/http"
	"os"
	"os/exec"

"github.com/prometheus/client_golang/prometheus"
	"github.com/prometheus/client_golang/prometheus/promhttp"
	dto "github.com/prometheus/client_model/go"
	"github.com/prometheus/common/expfmt"
	log "github.com/sirupsen/logrus"
)

var (
	cmdStartsCount = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "expexp_command_starts_total",
			Help: "Counts of command starts",
		},
		[]string{"module"},
	)
	cmdFailsCount = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "expexp_command_fails_total",
			Help: "Count of commands with non-zero exits",
		},
		[]string{"module"},
	)
)

func (c execConfig) GatherWithContext(ctx context.Context, r *http.Request) prometheus.GathererFunc {
	return func() ([]*dto.MetricFamily, error) {
		var out bytes.Buffer

cmd := exec.CommandContext(ctx, c.Command)
		cmd.Args = append(cmd.Args, c.Args...)
		uargs, ok := r.URL.Query()["args"]
		if ok {
			cmd.Args = append(cmd.Args, uargs...)
		}

for k, v := range c.Env {
			cmd.Env = append(cmd.Env, fmt.Sprintf("%s=%s", k, v))
		}

cmd.Stdout = &out
		cmd.Stderr = os.Stderr

errc := make(chan error, 1)
		go func() {
			cmdStartsCount.WithLabelValues(c.mcfg.name).Inc()
			errc <- cmd.Run()
			close(errc)
		}()

var err error
		select {
		case err = <-errc:
		case <-ctx.Done():
			err = ctx.Err()
		}

if err != nil {
			log.Warnf("Command module %v failed %+v", c.mcfg.name, err)
			cmdFailsCount.WithLabelValues(c.mcfg.name).Inc()
			if err == context.DeadlineExceeded {
				proxyTimeoutCount.WithLabelValues(c.mcfg.name).Inc()
			}
			return nil, err
		}
		var prsr expfmt.TextParser

var result []*dto.MetricFamily
		mfs, err := prsr.TextToMetricFamilies(&out)
		if err != nil {
			proxyMalformedCount.WithLabelValues(c.mcfg.name).Inc()
			return nil, err
		}
		for _, mf := range mfs {
			result = append(result, mf)
		}
		return result, nil
	}
}

func (c execConfig) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	g := c.GatherWithContext(ctx, r)
	promhttp.HandlerFor(g, promhttp.HandlerOpts{}).ServeHTTP(w, r)
}
07070100000009000081A4000003E800000064000000015EB2C5B300000179000000000000000000000000000000000000002400000000exporter_exporter-0.4.0/expexp.yamlmodules:
  node:
    method: http
    http:
       port: 9100
       tls_ca_cert_file: nofile

mtail:
    method: http
    http:
       port: 3903
       headers:
          foo: bar

cadvisor:
    method: http
    http:
       port: 4194

haproxy:
    method: http
    http:
       port: 9101

blackbox:
    method: http
    http:
       port: 9115
       path: probe

0707010000000A000081A4000003E800000064000000015EB2C5B30000015A000000000000000000000000000000000000002F00000000exporter_exporter-0.4.0/exporter_exporter.conf# Ubuntu upstart file at /etc/init/exporter_exporter.conf

description "exporter_exporter"

start on (started networking)
stop on [!12345]

respawn
respawn limit 2 5

setuid root
setgid root

script
    . /etc/default/exporter_exporter
    exec /usr/local/bin/exporter_exporter -config.file /etc/exporter_exporter.yaml ${EXPEXP_FLAGS}
end script
0707010000000B000081A4000003E800000064000000015EB2C5B300000010000000000000000000000000000000000000003300000000exporter_exporter-0.4.0/exporter_exporter.defaultsEXPEXP_FLAGS=""
0707010000000C000081A4000003E800000064000000015EB2C5B300000422000000000000000000000000000000000000001F00000000exporter_exporter-0.4.0/go.modmodule github.com/QubitProducts/exporter_exporter

require (
	github.com/aktau/github-release v0.7.2
	github.com/dustin/go-humanize v1.0.0 // indirect
	github.com/golang/protobuf v1.3.1 // indirect
	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
	github.com/kr/pretty v0.1.0 // indirect
	github.com/prometheus/client_golang v0.9.2
	github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90
	github.com/prometheus/common v0.2.0
	github.com/prometheus/procfs v0.0.0-20190322151404-55ae3d9d5573 // indirect
	github.com/sirupsen/logrus v1.4.0
	github.com/stretchr/testify v1.3.0 // indirect
	github.com/tomnomnom/linkheader v0.0.0-20180905144013-02ca5825eb80 // indirect
	github.com/voxelbrain/goptions v0.0.0-20180630082107-58cddc247ea2 // indirect
	golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c // indirect
	golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6
	golang.org/x/sys v0.0.0-20190322080309-f49334f85ddc
	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
	gopkg.in/yaml.v2 v2.2.2
)

go 1.14
0707010000000D000081A4000003E800000064000000015EB2C5B300002038000000000000000000000000000000000000001F00000000exporter_exporter-0.4.0/go.sumgithub.com/aktau/github-release v0.7.2 h1:la7AnShr2MQPIlBEcRA9MPbI8av0YFmpFP9WM5EoqJs=
github.com/aktau/github-release v0.7.2/go.mod h1:cPkP83iRnV8pAJyQlQ4vjLJoC+JE+aT5sOrYz3sTsX0=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc h1:cAKDfWh5VpdgMhJosfJnn5/FoN2SRZ4p7fJNX58YPaU=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf h1:qet1QNfXsQxTZqLG4oE62mJzwPIB8+Tee4RNCL9ulrY=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 h1:xJ4a3vCFaGF/jqvzLMYoU8P317H5OQ+Via4RmuPwCS0=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/konsorten/go-windows-terminal-sequences v1.0.2 h1:DB17ag19krx9CFsz4o3enTrPXyIXCl+2iCXH/aMAp9s=
github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
github.com/prometheus/client_golang v0.9.2 h1:awm861/B8OKDd2I/6o1dy3ra4BamzKhYOiGItCeZ740=
github.com/prometheus/client_golang v0.9.2/go.mod h1:OsXs2jCmiKlQ1lTBmv21f2mNfw4xf/QclQDMrYNZzcM=
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90 h1:S/YWwWx/RA8rT8tKFRuGUZhuA90OyIBpPCXkcbwU8DE=
github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
github.com/prometheus/common v0.0.0-20181126121408-4724e9255275/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
github.com/prometheus/common v0.2.0 h1:kUZDBDTdBVBYBj5Tmh2NZLlF60mfjA27rM34b+cVwNU=
github.com/prometheus/common v0.2.0/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
github.com/prometheus/procfs v0.0.0-20190322151404-55ae3d9d5573 h1:gAuD3LIrjkoOOPLlhGlZWZXztrQII9a9kT6HS5jFtSY=
github.com/prometheus/procfs v0.0.0-20190322151404-55ae3d9d5573/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
github.com/sirupsen/logrus v1.4.0 h1:yKenngtzGh+cUSSh6GWbxW2abRqhYUSR/t/6+2QqNvE=
github.com/sirupsen/logrus v1.4.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/tomnomnom/linkheader v0.0.0-20180905144013-02ca5825eb80 h1:nrZ3ySNYwJbSpD6ce9duiP+QkD3JuLCcWkdaehUS/3Y=
github.com/tomnomnom/linkheader v0.0.0-20180905144013-02ca5825eb80/go.mod h1:iFyPdL66DjUD96XmzVL3ZntbzcflLnznH0fr99w5VqE=
github.com/voxelbrain/goptions v0.0.0-20180630082107-58cddc247ea2 h1:txplJASvd6b/hrE0s/Ixfpp2cuwH9IO9oZBAN9iYa4A=
github.com/voxelbrain/goptions v0.0.0-20180630082107-58cddc247ea2/go.mod h1:DGCIhurYgnLz8J9ga1fMV/fbLDyUvTyrWXVWUIyJon4=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c h1:Vj5n4GlwjmQteupaxJ9+0FNOmBrHfq7vN4btdGoDZgI=
golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20181201002055-351d144fa1fc/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6 h1:bjcUS9ztw9kFmmIxJInhon/0Is3p+EHBKNgquIzo1OI=
golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190322080309-f49334f85ddc h1:4gbWbmmPFp4ySWICouJl6emP0MyS31yy9SrTlAGFT+g=
golang.org/x/sys v0.0.0-20190322080309-f49334f85ddc/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
gopkg.in/alecthomas/kingpin.v2 v2.2.6 h1:jMFz6MfLP0/4fUyZle81rXUoxOBFi19VUFKVDOQfozc=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
0707010000000E000081A4000003E800000064000000015EB2C5B3000015F8000000000000000000000000000000000000002000000000exporter_exporter-0.4.0/http.go// Copyright 2016 Qubit Ltd.
// 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 main

import (
	"bytes"
	"compress/gzip"
	"context"
	"errors"
	"fmt"
	"io"
	"io/ioutil"
	"net"
	"net/http"
	"net/url"
	"strconv"
	"strings"

dto "github.com/prometheus/client_model/go"
	"github.com/prometheus/common/expfmt"
	log "github.com/sirupsen/logrus"
)

const (
	// Msg to send in response body when verification of proxied server
	// response is failed
	VerificationErrorMsg = "Internal Server Error: " +
		"Response from proxied server failed verification. " +
		"See server logs for details"
)

type VerifyError struct {
	msg   string
	cause error
}

func (e *VerifyError) Error() string { return e.msg + ": " + e.cause.Error() }
func (e *VerifyError) Unwrap() error { return e.cause }

func (cfg moduleConfig) getReverseProxyDirectorFunc() (func(*http.Request), error) {
	base, err := url.Parse(cfg.HTTP.Path)
	if err != nil {
		return nil, fmt.Errorf("http configuration path should be a valid URL path with options, %w", err)
	}

cvs := base.Query()

return func(r *http.Request) {
		qvs := r.URL.Query()
		for k, vs := range cvs {
			for _, v := range vs {
				qvs.Add(k, v)
			}
		}
		qvs["module"] = qvs["module"][1:]

r.URL.RawQuery = qvs.Encode()

for k, v := range cfg.HTTP.Headers {
			r.Header.Add(k, v)
		}

r.URL.Scheme = cfg.HTTP.Scheme
		r.URL.Host = net.JoinHostPort(cfg.HTTP.Address, strconv.Itoa(cfg.HTTP.Port))
		r.URL.Path = base.Path
	}, nil
}

func (cfg moduleConfig) getReverseProxyModifyResponseFunc() func(*http.Response) error {
	return func(resp *http.Response) error {
		if resp.StatusCode != 200 {
			return nil
		}

var (
			err     error
			body    bytes.Buffer
			oldBody = resp.Body
		)
		defer oldBody.Close()

if _, err = body.ReadFrom(oldBody); err != nil {
			return &VerifyError{"Failed to read body from proxied server", err}
		}

resp.Body = ioutil.NopCloser(bytes.NewReader(body.Bytes()))

var bodyReader io.ReadCloser
		if resp.Header.Get("Content-Encoding") == "gzip" {
			bodyReader, err = gzip.NewReader(bytes.NewReader(body.Bytes()))
			if err != nil {
				return &VerifyError{"Failed to decode gzipped response", err}
			}
		} else {
			bodyReader = ioutil.NopCloser(bytes.NewReader(body.Bytes()))
		}
		defer bodyReader.Close()

dec := expfmt.NewDecoder(bodyReader, expfmt.ResponseFormat(resp.Header))
		for {
			mf := dto.MetricFamily{}
			err := dec.Decode(&mf)
			if err == io.EOF {
				break
			}
			if err != nil {
				proxyMalformedCount.WithLabelValues(cfg.name).Inc()
				return &VerifyError{"Failed to decode metrics from proxied server", err}
			}
		}

return nil
	}
}

func (cfg moduleConfig) getReverseProxyErrorHandlerFunc() func(http.ResponseWriter, *http.Request, error) {
	return func(w http.ResponseWriter, r *http.Request, err error) {
		var verifyError *VerifyError
		if errors.As(err, &verifyError) {
			log.Errorf("Verification for module '%s' failed: %v", cfg.name, err)
			http.Error(w, VerificationErrorMsg, http.StatusInternalServerError)
			return
		}

if errors.Is(err, context.DeadlineExceeded) {
			log.Errorf("Request time out for module '%s'", cfg.name)
			http.Error(w, http.StatusText(http.StatusGatewayTimeout), http.StatusGatewayTimeout)
			return
		}

log.Errorf("Proxy error for module '%s': %v", cfg.name, err)
		http.Error(w, http.StatusText(http.StatusBadGateway), http.StatusBadGateway)
	}
}

// BearerAuthMiddleware
type BearerAuthMiddleware struct {
	http.Handler
	Token string
}

func (b BearerAuthMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	authHeader := r.Header.Get("Authorization")
	if authHeader == "" {
		w.WriteHeader(http.StatusUnauthorized)
		_, _ = w.Write([]byte("Authorization header is missing"))
		return
	}
	ss := strings.SplitN(authHeader, " ", 2)
	if !(len(ss) == 2 && ss[0] == "Bearer") {
		w.WriteHeader(http.StatusUnauthorized)
		_, _ = w.Write([]byte("Authorization header not of Bearer type"))
		return
	}
	if ss[1] != b.Token {
		w.WriteHeader(http.StatusUnauthorized)
		_, _ = w.Write([]byte("Invalid Bearer Token"))
		return
	}
	b.Handler.ServeHTTP(w, r)
}

type IPAddressAuthMiddleware struct {
	http.Handler
	ACL []net.IPNet
}

func (m IPAddressAuthMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	host, _, err := net.SplitHostPort(r.RemoteAddr)
	if err != nil {
		log.Errorf("Failed to parse host form remote address '%s'", r.RemoteAddr)
		w.WriteHeader(http.StatusInternalServerError)
		_, _ = w.Write([]byte("Failed to determine client IP address"))
		return
	}

addr := net.ParseIP(host)
	if addr == nil {
		log.Errorf(
			"Failed to determine client IP address from '%s' (originally '%s')",
			host, r.RemoteAddr,
		)
		w.WriteHeader(http.StatusInternalServerError)
		_, _ = w.Write([]byte("Failed to determine client IP address"))
		return
	}

for _, network := range m.ACL {
		// client is in access list
		if network.Contains(addr) {
			m.Handler.ServeHTTP(w, r)
			return
		}
	}

// client is not in access list
	log.Infof("Access forbidden for %q", addr)
	w.WriteHeader(http.StatusForbidden)
	_, _ = w.Write([]byte("Forbidden"))
}
0707010000000F000081A4000003E800000064000000015EB2C5B300000A98000000000000000000000000000000000000002500000000exporter_exporter-0.4.0/http_test.gopackage main

import (
	"bytes"
	"fmt"
	"io"
	"math/rand"
	"net/http"
	"net/http/httptest"
	"net/url"
	"strconv"
	"testing"
	"time"

dto "github.com/prometheus/client_model/go"
	"github.com/prometheus/common/expfmt"
)

func BenchmarkReverseProxyHandler(b *testing.B) {
	body := genRandomMetricsResponse(10000, 10)

test_exporter := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		reader := bytes.NewReader(body.Bytes())
		io.Copy(w, reader)
	}))
	defer test_exporter.Close()

URL, _ := url.Parse(test_exporter.URL)
	verify := true
	port, _ := strconv.ParseInt(URL.Port(), 0, 0)
	modCfg := &moduleConfig{
		Method:  "http",
		Timeout: 5 * time.Second,
		HTTP: httpConfig{
			Verify:  &verify,
			Scheme:  URL.Scheme,
			Address: URL.Hostname(),
			Port:    int(port),
			Path:    "/",
		},
	}

if err := checkModuleConfig("test", modCfg); err != nil {
		b.Fatalf("Failed to check module config: %v", err)
	}

cfg := &config{
		Modules: map[string]*moduleConfig{
			"test": modCfg,
		},
	}

req := httptest.NewRequest("GET", "/proxy?module=test", nil)

b.ResetTimer()
	for i := 0; i < b.N; i++ {
		rr := httptest.NewRecorder()
		cfg.doProxy(rr, req)
		if rr.Code != http.StatusOK {
			b.Fatalf("Bad response status %d", rr.Code)
		}
		if len(rr.Body.Bytes()) <= 0 {
			b.Fatal("Response body is absent")
		}
	}
}

// genRandomMetricsResponse generates http response body which contains random set of
// prometheus metrics. mf_num sets number of metric families in response which has
// metric names in format 'metric{random number}'. m_num controls number of metrics
// inside each metric family. Metrics inside metric families differ in values of
// label 'label'.
func genRandomMetricsResponse(mf_num int, m_num int) *bytes.Buffer {
	rand.Seed(time.Now().UnixNano())
	helpMsg := "help msg"
	labelName := "label"
	metricFamilies := make([]*dto.MetricFamily, mf_num)
	metricType := dto.MetricType_GAUGE
	for i, _ := range metricFamilies {
		metrics := make([]*dto.Metric, m_num)
		for i, _ := range metrics {
			labelValue := fmt.Sprint(rand.Int63())
			value := rand.Float64()
			ts := time.Now().UnixNano()
			metrics[i] = &dto.Metric{
				Label: []*dto.LabelPair{
					&dto.LabelPair{
						Name:  &labelName,
						Value: &labelValue,
					},
				},
				Gauge: &dto.Gauge{
					Value: &value,
				},
				TimestampMs: &ts,
			}
		}
		metricName := fmt.Sprintf("metric%d", rand.Int63())
		metricFamilies[i] = &dto.MetricFamily{
			Name:   &metricName,
			Help:   &helpMsg,
			Type:   &metricType,
			Metric: metrics,
		}
	}

buf := &bytes.Buffer{}
	enc := expfmt.NewEncoder(buf, expfmt.FmtText)
	for _, mf := range metricFamilies {
		enc.Encode(mf)
	}

return buf
}
07070100000010000081A4000003E800000064000000015EB2C5B3000039EC000000000000000000000000000000000000002000000000exporter_exporter-0.4.0/main.go// Copyright 2016 Qubit Ltd.
// 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 main

import (
	"context"
	"crypto/tls"
	"crypto/x509"
	"encoding/json"
	"errors"
	"flag"
	"fmt"
	"html/template"
	"io/ioutil"
	"net"
	"net/http"
	"os"
	"path"
	"path/filepath"
	"regexp"
	"strings"
	"time"

"golang.org/x/sync/errgroup"

"github.com/prometheus/client_golang/prometheus"
	"github.com/prometheus/client_golang/prometheus/promhttp"
	log "github.com/sirupsen/logrus"
)

var (
	printVersion = flag.Bool("version", false, "Print the version and exit")

cfgFile  = flag.String("config.file", "expexp.yaml", "The path to the configuration file.")
	cfgDirs  StringSliceFlag
	skipDirs = flag.Bool("config.skip-dirs", false, "Skip non existent -config.dirs entries instead of terminating.")

addr = flag.String("web.listen-address", ":9999", "The address to listen on for HTTP requests.")

bearerToken     = flag.String("web.bearer.token", "", "Bearer authentication token.")
	bearerTokenFile = flag.String("web.bearer.token-file", "", "File containing the Bearer authentication token.")

acl IPNetSliceFlag

certPath  = flag.String("web.tls.cert", "cert.pem", "Path to cert")
	keyPath   = flag.String("web.tls.key", "key.pem", "Path to key")
	caPath    = flag.String("web.tls.ca", "ca.pem", "Path to CA to auth clients against")
	verify    = flag.Bool("web.tls.verify", false, "Enable client verification")
	certMatch = flag.String("web.tls.certmatch", "", "if set, this is used as a regexp that is matched against any certificate subject, dnsname or email address, only certs with a match are verified. web.tls.verify must also be set")
	tlsAddr   = flag.String("web.tls.listen-address", "", "The address to listen on for HTTPS requests.")

tPath = flag.String("web.telemetry-path", "/metrics", "The address to listen on for HTTP requests.")
	pPath = flag.String("web.proxy-path", "/proxy", "The address to listen on for HTTP requests.")

logLevel = LogLevelFlag(log.WarnLevel)
	logJson  = flag.Bool("log.json", false, "Serialize log messages in JSON")

proxyDuration = prometheus.NewSummaryVec(
		prometheus.SummaryOpts{
			Name: "expexp_proxy_duration_seconds",
			Help: "Duration of proxying requests to configured exporters",
		},
		[]string{"module"},
	)
	proxyErrorCount = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "expexp_proxy_errors_total",
			Help: "Counts of errors",
		},
		[]string{"module"},
	)
	proxyTimeoutCount = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "expexp_proxy_timeout_errors_total",
			Help: "Counts of the number of times a proxy timeout occurred",
		},
		[]string{"module"},
	)

proxyMalformedCount = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "expexp_malformed_content_errors_total",
			Help: "Counts of unparsable scrape content errors",
		},
		[]string{"module"},
	)
)

func init() {
	// register the collector metrics in the default
	// registry.
	prometheus.MustRegister(proxyDuration)
	prometheus.MustRegister(proxyTimeoutCount)
	prometheus.MustRegister(proxyErrorCount)
	prometheus.MustRegister(proxyMalformedCount)
	prometheus.MustRegister(cmdStartsCount)
	prometheus.MustRegister(cmdFailsCount)

flag.Var(&cfgDirs, "config.dirs", "The path to directories of configuration files, can be specified multiple times.")
	flag.Var(&acl, "allow.net", "Allow connection from this network specified in CIDR notation. Can be specified multiple times.")
	flag.Var(&logLevel, "log.level", "Log level")
}

func setup() (*config, error) {
	cfg := &config{
		Modules: make(map[string]*moduleConfig),
		XXX:     make(map[string]interface{}),
	}
	if *cfgFile != "" {
		r, err := os.Open(*cfgFile)
		if err != nil {
			return nil, err
		}
		defer r.Close()

cfg, err = readConfig(r)
		if err != nil {
			return nil, err
		}
		for mn, _ := range cfg.Modules {
			log.Debugf("read module config '%s' from: %s", mn, *cfgFile)
		}
	}

cfgDirs:
	for _, cfgDir := range cfgDirs {
		mfs, err := ioutil.ReadDir(cfgDir)
		if err != nil {
			if *skipDirs && os.IsNotExist(err) {
				log.Warnf("skipping non existent config.dirs entry '%s'", cfgDir)
				continue cfgDirs
			}
			return nil, fmt.Errorf("failed reading directory: %s, %v", cfgDir, err)
		}

yamlSuffixes := map[string]bool{
			".yml":  true,
			".yaml": true,
		}
		for _, mf := range mfs {
			fullpath := filepath.Join(cfgDir, mf.Name())
			if mf.IsDir() || !yamlSuffixes[filepath.Ext(mf.Name())] {
				log.Warnf("skipping non-yaml file %v", fullpath)
				continue
			}

mn := strings.TrimSuffix(mf.Name(), filepath.Ext(mf.Name()))
			if _, ok := cfg.Modules[mn]; ok {
				return nil, fmt.Errorf("module %s is already defined", mn)
			}
			r, err := os.Open(fullpath)
			if err != nil {
				return nil, fmt.Errorf("failed to open config file %s, %w", fullpath, err)
			}
			defer r.Close()

mcfg, err := readModuleConfig(mn, r)
			if err != nil {
				return nil, fmt.Errorf("failed reading configs %s, %w", fullpath, err)
			}

log.Debugf("read module config '%s' from: %s", mn, fullpath)
			cfg.Modules[mn] = mcfg
		}
	}
	if len(cfg.Modules) == 0 {
		log.Errorln("no modules loaded from any config file")
	}

if *bearerToken != "" {
		cfg.bearerToken = *bearerToken
	}

if *bearerTokenFile != "" {
		if *bearerToken != "" {
			return nil, errors.New(("web.bearer.token and web.bearer.token-file are mutually exclusive options"))
		}
		bs, err := ioutil.ReadFile(*bearerTokenFile)
		if err != nil {
			return nil, fmt.Errorf("failed reading bearer file %s, %w", *bearerTokenFile, err)
		}

t := strings.TrimSpace(string(bs))
		if len(t) == 0 {
			return nil, errors.New("token file should not be empty")
		}
		cfg.bearerToken = t
	}

cfg.proxyPath = path.Clean("/" + *pPath)
	cfg.telemetryPath = path.Clean("/" + *tPath)
	if cfg.proxyPath == cfg.telemetryPath {
		return nil, fmt.Errorf("flags -web.proxy-path and -web.telemetry-path can not be set to the same value")
	}
	return cfg, nil
}

func getClientValidator(r *regexp.Regexp, helloInfo *tls.ClientHelloInfo) func([][]byte, [][]*x509.Certificate) error {
	return func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
		for _, c := range verifiedChains {
			leaf := c[0]

if r.MatchString(leaf.Subject.CommonName) {
				return nil
			}

for _, name := range leaf.DNSNames {
				if r.MatchString(name) {
					return nil
				}
			}

for _, name := range leaf.EmailAddresses {
				if r.MatchString(name) {
					return nil
				}
			}
		}
		return errors.New("no client certificate subject or email address matched")
	}
}
func setupTLS() (*tls.Config, error) {
	var tlsConfig *tls.Config
	if *tlsAddr == "" {
		return nil, nil
	}

cert, err := tls.LoadX509KeyPair(*certPath, *keyPath)
	if err != nil {
		return nil, fmt.Errorf("Could not parse key/cert, %w", err)
	}

tlsConfig = &tls.Config{
		Certificates: []tls.Certificate{cert},
		MinVersion:   tls.VersionTLS12,
		CipherSuites: []uint16{
			tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
			tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
			tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
			tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
			tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
			tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
		},
	}
	tlsConfig.BuildNameToCertificate()

if *verify {
		pool := x509.NewCertPool()
		cabs, err := ioutil.ReadFile(*caPath)
		if err != nil {
			return nil, fmt.Errorf("Could not open ca file, %w", err)
		}
		ok := pool.AppendCertsFromPEM(cabs)
		if !ok {
			return nil, errors.New("Failed loading ca certs")
		}
		tlsConfig.ClientAuth = tls.RequireAndVerifyClientCert
		tlsConfig.ClientCAs = pool

if *certMatch != "" {
			rx, err := regexp.Compile(*certMatch)
			if err != nil {
				return nil, fmt.Errorf("tls.web.certmatch is not a valid regexp, %w", err)
			}
			tlsConfig.GetConfigForClient = func(hi *tls.ClientHelloInfo) (*tls.Config, error) {
				serverConf := tlsConfig.Clone()
				serverConf.VerifyPeerCertificate = getClientValidator(rx, hi)
				return serverConf, nil
			}
		}
	} else {
		if *certMatch != "" {
			return nil, errors.New("tls.web.verify must be set to use certificate matching")
		}
	}

return tlsConfig, nil
}

func runListener(ctx context.Context, name string, lsnr net.Listener, handler http.Handler) error {
	srvr := http.Server{
		Handler: handler,
	}
	go func() {
		<-ctx.Done()
		srvr.Shutdown(context.Background())
	}()

if err := srvr.Serve(lsnr); err != nil {
		return fmt.Errorf("listener %s stopped, %w", name, err)
	}
	return nil
}

func main() {
	var err error
	defer func() {
		if err != nil {
			log.Errorln(err.Error())
			os.Exit(1)
		}
	}()

flag.Parse()
	manageService()

if *printVersion {
		fmt.Fprintf(os.Stderr, "Version: %s\n", versionStr())
		return
	}

cfg, err := setup()
	if err != nil {
		return
	}
	tlsConfig, err := setupTLS()
	if err != nil {
		return
	}

if *addr == "" && *tlsAddr == "" {
		log.Info("No web addresses to listen on, nothing to do!")
		os.Exit(0)
	}

var lsnr net.Listener
	if *addr != "" {
		lsnr, err = net.Listen("tcp", *addr)
		if err != nil {
			return
		}
	}

var tlsLsnr net.Listener
	if *tlsAddr != "" {
		tlsLsnr, err = net.Listen("tcp", *tlsAddr)
		if err != nil {
			return
		}

tlsLsnr = tls.NewListener(tlsLsnr, tlsConfig)
	}

http.HandleFunc(cfg.proxyPath, cfg.doProxy)
	http.HandleFunc("/", cfg.listModules)
	http.Handle(cfg.telemetryPath, promhttp.Handler())

handler := http.Handler(http.DefaultServeMux)

if cfg.bearerToken != "" {
		handler = &BearerAuthMiddleware{handler, cfg.bearerToken}
	}

if len(acl) > 0 {
		log.Infof("Allowing connections only from %v", acl)
		handler = &IPAddressAuthMiddleware{handler, acl}
	}

log.SetLevel(log.Level(logLevel))
	if *logJson {
		log.SetFormatter(&log.JSONFormatter{})
	}
	handler = &AccessLogMiddleware{handler}

eg, ctx := errgroup.WithContext(context.Background())

if lsnr != nil {
		eg.Go(func() error {
			return runListener(ctx, "http", lsnr, handler)
		})
	}

if tlsLsnr != nil {
		eg.Go(func() error {
			return runListener(ctx, "https", tlsLsnr, handler)
		})
	}

err = eg.Wait()
}

type responseWriterWithStatus struct {
	http.ResponseWriter
	status int
}

func (w *responseWriterWithStatus) WriteHeader(status int) {
	w.status = status
	w.ResponseWriter.WriteHeader(status)
}

type AccessLogMiddleware struct {
	http.Handler
}

func (middleware AccessLogMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	var (
		start        = time.Now()
		statusWriter = &responseWriterWithStatus{w, http.StatusOK}
	)
	defer func() {
		remoteHost, _, _ := net.SplitHostPort(r.RemoteAddr)
		log.Infof(
			"%s - %s \"%s\" %d %s (took %s)",
			remoteHost, r.Method, r.URL.RequestURI(), statusWriter.status,
			http.StatusText(statusWriter.status), time.Now().Sub(start),
		)
	}()
	middleware.Handler.ServeHTTP(statusWriter, r)
}

func (cfg *config) doProxy(w http.ResponseWriter, r *http.Request) {
	mod, ok := r.URL.Query()["module"]
	if !ok {
		log.Errorf("no module given")
		http.Error(w, fmt.Sprintf("require parameter module is missing%v\n", mod), http.StatusBadRequest)
		return
	}

log.Debugf("running module %v\n", mod)

var h http.Handler
	if m, ok := cfg.Modules[mod[0]]; !ok {
		proxyErrorCount.WithLabelValues("unknown").Inc()
		log.Warnf("unknown module requested  %v\n", mod)
		http.Error(w, fmt.Sprintf("unknown module %v\n", mod), http.StatusNotFound)
		return
	} else {
		h = m
	}

h.ServeHTTP(w, r)
}

func (cfg *config) listModules(w http.ResponseWriter, r *http.Request) {
	switch r.Header.Get("Accept") {
	case "application/json":
		log.Debugf("Listing modules in json")
		moduleJSON, err := json.Marshal(cfg.Modules)
		if err != nil {
			log.Error(err)
			http.Error(w, "Failed to produce JSON", http.StatusInternalServerError)
			return
		}
		w.Header().Set("Content-Type", "application/json")
		w.Write(moduleJSON)
	default:
		log.Debugf("Listing modules in html")
		w.Header().Set("Content-Type", "text/html; charset=utf-8")
		tmpl := template.Must(template.New("modules").Parse(`
			<h2>Exporters:</h2>
				<ul>
					{{range $name, $cfg := .Modules}}
						<li><a href="/proxy?module={{$name}}">{{$name}}</a></li>
					{{end}}
				</ul>`))
		err := tmpl.Execute(w, cfg)
		if err != nil {
			log.Error(err)
			http.Error(w, "Can't execute the template", http.StatusInternalServerError)
		}
	}
	return
}

func (m moduleConfig) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	st := time.Now()
	defer func() {
		proxyDuration.WithLabelValues(m.name).Observe(float64(time.Since(st)) / float64(time.Second))
	}()

nr := r
	cancel := func() {}
	if m.Timeout != 0 {
		log.Debugf("setting module %v timeout to %v", m.name, m.Timeout)

var ctx context.Context
		ctx, cancel = context.WithTimeout(r.Context(), m.Timeout)
		nr = r.WithContext(ctx)
	}
	defer cancel()

switch m.Method {
	case "exec":
		m.Exec.mcfg = &m
		m.Exec.ServeHTTP(w, nr)
	case "http":
		m.HTTP.mcfg = &m
		m.HTTP.ServeHTTP(w, nr)
	default:
		log.Errorf("unknown module method  %v\n", m.Method)
		proxyErrorCount.WithLabelValues(m.name).Inc()
		http.Error(w, fmt.Sprintf("unknown module method %v\n", m.Method), http.StatusNotFound)
		return
	}
}

// StringSliceFlags collects multiple uses of a named flag into a slice.
type StringSliceFlag []string

func (s *StringSliceFlag) String() string {
	// Just some representation output, not actually used to parse the input,
	// the flag is instead supposed to be specified multiple times.
	return strings.Join(*s, ", ")
}

func (s *StringSliceFlag) Set(value string) error {
	*s = append(*s, value)
	return nil
}

// IPNetSliceFlag parses IP network in CIDR notation into net.IPNet. Can be set
// multiple times
type IPNetSliceFlag []net.IPNet

func (nets IPNetSliceFlag) String() string {
	netsStr := make([]string, len(nets))
	for i := range nets {
		netsStr[i] = fmt.Sprint(nets[i].String())
	}
	return strings.Join(netsStr, ", ")
}

func (nets *IPNetSliceFlag) Set(value string) error {
	if _, net, err := net.ParseCIDR(value); err != nil {
		return err
	} else {
		*nets = append(*nets, *net)
	}
	return nil
}

type LogLevelFlag log.Level

func (level LogLevelFlag) String() string {
	return log.Level(level).String()
}

func (level *LogLevelFlag) Set(value string) error {
	if lvl, err := log.ParseLevel(value); err != nil {
		return err
	} else {
		*level = LogLevelFlag(lvl)
	}
	return nil
}
07070100000011000081A4000003E800000064000000015EB2C5B30000007A000000000000000000000000000000000000002300000000exporter_exporter-0.4.0/service.go// nothing to see here, service control only applies to Windows
// +build !windows

package main

func manageService() {}
07070100000012000081A4000003E800000064000000015EB2C5B300001610000000000000000000000000000000000000002B00000000exporter_exporter-0.4.0/service_windows.gopackage main

import (
	"flag"
	"fmt"
	"os"
	"path/filepath"
	"time"

"github.com/prometheus/common/log"
	"golang.org/x/sys/windows/svc"
	"golang.org/x/sys/windows/svc/eventlog"
	"golang.org/x/sys/windows/svc/mgr"
)

var (
	winSvcCmd     = flag.String("winsvc", "", "install, uninstall, start, stop a Windows service")
	winSvcRunning = false
)

func manageService() {
	const winSvcName = "exporter_exporter"

var err error

switch *winSvcCmd {
	case "start":
		err = startService(winSvcName)
	case "install":
		err = installService(winSvcName, "Reverse proxy for Prometheus exporters")
	case "uninstall":
		err = uninstallService(winSvcName)
	case "stop":
		err = controlService(winSvcName, svc.Stop, svc.Stopped)
	case "":
		isIntSess, err := svc.IsAnInteractiveSession()
		if err != nil {
			log.Fatalf("Failed to determine if we are running in an interactive session: %v", err)
		}
		if !isIntSess {
			go runService(winSvcName)
			for {
				time.Sleep(time.Millisecond * 200)
				if winSvcRunning {
					break
				}
			}
		}
		return
	default:
		log.Fatalf("Unknown command '%v' for -winsvc", *winSvcCmd)
	}
	if err != nil {
		log.Fatalf("Failed to %s %s: %v", *winSvcCmd, winSvcName, err)
	}
	os.Exit(0)
}

func exePath() (string, error) {
	prog := os.Args[0]
	p, err := filepath.Abs(prog)
	if err != nil {
		return "", err
	}
	fi, err := os.Stat(p)
	if err == nil {
		if !fi.Mode().IsDir() {
			return p, nil
		}
		err = fmt.Errorf("%s is directory", p)
	}
	if filepath.Ext(p) == "" {
		p += ".exe"
		fi, err := os.Stat(p)
		if err == nil {
			if !fi.Mode().IsDir() {
				return p, nil
			}
			err = fmt.Errorf("%s is directory", p)
		}
	}
	return "", err
}

func installService(name, desc string) error {
	exepath, err := exePath()
	if err != nil {
		return fmt.Errorf("Unable to determine path of exe: %v", err)
	}
	var serviceArgs []string
	flag.Visit(func(f *flag.Flag) {
		if f.Name != "winsvc" {
			serviceArgs = append(serviceArgs, fmt.Sprintf("-%s", f.Name))
			if f.Value.String() != "true" {
				serviceArgs = append(serviceArgs, f.Value.String())
			}
		}
	})
	if len(serviceArgs) <= 0 {
		serviceArgs = append(serviceArgs, "-config.file", fmt.Sprintf("%s\\expexp.yaml", filepath.Dir(exepath)))
	}
	m, err := mgr.Connect()
	if err != nil {
		return fmt.Errorf("Failed while connecting to service control manager: %v", err)
	}
	defer m.Disconnect()
	s, err := m.OpenService(name)
	if err == nil {
		s.Close()
		return fmt.Errorf("Service with the name '%s' already exists", name)
	}
	s, err = m.CreateService(name, exepath, mgr.Config{DisplayName: name,
		StartType:   mgr.StartAutomatic,
		Description: desc}, serviceArgs...,
	)
	if err != nil {
		return fmt.Errorf("Failed while creating a new service: %v", err)
	}
	defer s.Close()
	err = eventlog.InstallAsEventCreate(name, eventlog.Error|eventlog.Warning|eventlog.Info)
	if err != nil {
		s.Delete()
		return fmt.Errorf("Failed while creating eventlog source: %v", err)
	}
	log.Infof("Installed service %s with args: %v", name, serviceArgs)
	return nil
}

func uninstallService(name string) error {
	controlService(name, svc.Stop, svc.Stopped)
	m, err := mgr.Connect()
	if err != nil {
		return err
	}
	defer m.Disconnect()
	s, err := m.OpenService(name)
	if err != nil {
		return fmt.Errorf("Failed while retrieving access to the service: %v", err)
	}
	defer s.Close()
	err = s.Delete()
	if err != nil {
		return err
	}
	err = eventlog.Remove(name)
	if err != nil {
		return fmt.Errorf("Failed while removing eventlog source: %v", err)
	}
	return nil
}

func startService(name string) error {
	m, err := mgr.Connect()
	if err != nil {
		return err
	}
	defer m.Disconnect()
	s, err := m.OpenService(name)
	if err != nil {
		return fmt.Errorf("Failed while retrieving access to the service: %v", err)
	}
	defer s.Close()
	err = s.Start()
	if err != nil {
		return fmt.Errorf("Failed while trying to start the service: %v", err)
	}
	return nil
}

func controlService(name string, c svc.Cmd, to svc.State) error {
	m, err := mgr.Connect()
	if err != nil {
		return err
	}
	defer m.Disconnect()
	s, err := m.OpenService(name)
	if err != nil {
		return fmt.Errorf("Failed while retrieving access to the service: %v", err)
	}
	defer s.Close()
	status, err := s.Control(c)
	if err != nil {
		return fmt.Errorf("Failed while sending control %d: %v", c, err)
	}
	timeout := time.Now().Add(35 * time.Second)
	for status.State != to {
		if timeout.Before(time.Now()) {
			return fmt.Errorf("Failed while waiting for the service to change state to %d", to)
		}
		time.Sleep(300 * time.Millisecond)
		status, err = s.Query()
		if err != nil {
			return fmt.Errorf("Failed while attempting to retrieve service status: %v", err)
		}
	}
	return nil
}

type exporterExporterService struct {
}

func (s *exporterExporterService) Execute(args []string, r <-chan svc.ChangeRequest, changes chan<- svc.Status) (ssec bool, errno uint32) {
	const cmdsAccepted = svc.AcceptStop | svc.AcceptShutdown | svc.AcceptPauseAndContinue
	changes <- svc.Status{State: svc.StartPending}
	changes <- svc.Status{State: svc.Running, Accepts: cmdsAccepted}
	winSvcRunning = true

loop:
	for c := range r {
		switch c.Cmd {
		case svc.Interrogate:
			changes <- c.CurrentStatus
		case svc.Stop, svc.Shutdown:
			break loop
		default:
			log.Errorf("Unexpected control request #%d", c)
		}
	}
	changes <- svc.Status{State: svc.StopPending}
	return
}

func runService(name string) {
	log.Infof("Starting service %s %s", name, Version)
	err := svc.Run(name, &exporterExporterService{})
	if err != nil {
		log.Errorf("%s service failed: %v", name, err)
		return
	}
	log.Infof("%s service stopped", name)
	os.Exit(0)
}
07070100000013000081A4000003E800000064000000015EB2C5B300000050000000000000000000000000000000000000002100000000exporter_exporter-0.4.0/tools.go// +build never

package tools

import (
	_ "github.com/aktau/github-release"
)
07070100000014000081A4000003E800000064000000015EB2C5B30000031E000000000000000000000000000000000000002300000000exporter_exporter-0.4.0/version.gopackage main

import (
	"fmt"
	"runtime"

"github.com/prometheus/client_golang/prometheus"
)

var (
	Version   = "unset"
	Revision  = "unset"
	Branch    = "unset"
	BuildUser = "unset"
	BuildDate = "unset"
	GoVersion = runtime.Version()
)

var (
	buildInfo = prometheus.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "build_info",
			Help: "A metric with a constant '1' value labeled by version, revision, branch and goversion from which exporter_exporter was built.",
		},
		[]string{"version", "revision", "branch", "goversion"},
	)
)

func init() {
	prometheus.MustRegister(buildInfo)
	buildInfo.WithLabelValues(Version, Revision, Branch, GoVersion).Set(1)
}

func versionStr() string {
	return fmt.Sprintf("%s-%s (from %s, built by %s on %s)", Version, Revision, Branch, BuildUser, BuildDate)
}
07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!147 blocks

Places

File exporter_exporter-0.4.0.obscpio of Package golang-github-QubitProducts-exporter_exporter (Revision 916cb0a5295e25823e53c2d351aaa74d)

Places