vendor/contrib.go.opencensus.io/exporter/zipkin/go.sum

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-go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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-golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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-golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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-golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
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vendor/contrib.go.opencensus.io/exporter/zipkin/zipkin.go

-// Copyright 2017, OpenCensus 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.
-
-// Package zipkin contains an trace exporter for Zipkin.
-package zipkin // import "contrib.go.opencensus.io/exporter/zipkin"
-
-import (
-	"encoding/binary"
-	"fmt"
-	"strconv"
-
-	"github.com/openzipkin/zipkin-go/model"
-	"github.com/openzipkin/zipkin-go/reporter"
-	"go.opencensus.io/trace"
-)
-
-// Exporter is an implementation of trace.Exporter that uploads spans to a
-// Zipkin server.
-type Exporter struct {
-	reporter      reporter.Reporter
-	localEndpoint *model.Endpoint
-}
-
-// NewExporter returns an implementation of trace.Exporter that uploads spans
-// to a Zipkin server.
-//
-// reporter is a Zipkin Reporter which will be used to send the spans.  These
-// can be created with the openzipkin library, using one of the packages under
-// github.com/openzipkin/zipkin-go/reporter.
-//
-// localEndpoint sets the local endpoint of exported spans.  It can be
-// constructed with github.com/openzipkin/zipkin-go.NewEndpoint, e.g.:
-// 	localEndpoint, err := NewEndpoint("my server", listener.Addr().String())
-// localEndpoint can be nil.
-func NewExporter(reporter reporter.Reporter, localEndpoint *model.Endpoint) *Exporter {
-	return &Exporter{
-		reporter:      reporter,
-		localEndpoint: localEndpoint,
-	}
-}
-
-// ExportSpan exports a span to a Zipkin server.
-func (e *Exporter) ExportSpan(s *trace.SpanData) {
-	e.reporter.Send(zipkinSpan(s, e.localEndpoint))
-}
-
-const (
-	statusCodeTagKey        = "error"
-	statusDescriptionTagKey = "opencensus.status_description"
-)
-
-var (
-	sampledTrue    = true
-	canonicalCodes = [...]string{
-		"OK",
-		"CANCELLED",
-		"UNKNOWN",
-		"INVALID_ARGUMENT",
-		"DEADLINE_EXCEEDED",
-		"NOT_FOUND",
-		"ALREADY_EXISTS",
-		"PERMISSION_DENIED",
-		"RESOURCE_EXHAUSTED",
-		"FAILED_PRECONDITION",
-		"ABORTED",
-		"OUT_OF_RANGE",
-		"UNIMPLEMENTED",
-		"INTERNAL",
-		"UNAVAILABLE",
-		"DATA_LOSS",
-		"UNAUTHENTICATED",
-	}
-)
-
-func canonicalCodeString(code int32) string {
-	if code < 0 || int(code) >= len(canonicalCodes) {
-		return "error code " + strconv.FormatInt(int64(code), 10)
-	}
-	return canonicalCodes[code]
-}
-
-func convertTraceID(t trace.TraceID) model.TraceID {
-	return model.TraceID{
-		High: binary.BigEndian.Uint64(t[:8]),
-		Low:  binary.BigEndian.Uint64(t[8:]),
-	}
-}
-
-func convertSpanID(s trace.SpanID) model.ID {
-	return model.ID(binary.BigEndian.Uint64(s[:]))
-}
-
-func spanKind(s *trace.SpanData) model.Kind {
-	switch s.SpanKind {
-	case trace.SpanKindClient:
-		return model.Client
-	case trace.SpanKindServer:
-		return model.Server
-	}
-	return model.Undetermined
-}
-
-func zipkinSpan(s *trace.SpanData, localEndpoint *model.Endpoint) model.SpanModel {
-	sc := s.SpanContext
-	z := model.SpanModel{
-		SpanContext: model.SpanContext{
-			TraceID: convertTraceID(sc.TraceID),
-			ID:      convertSpanID(sc.SpanID),
-			Sampled: &sampledTrue,
-		},
-		Kind:          spanKind(s),
-		Name:          s.Name,
-		Timestamp:     s.StartTime,
-		Shared:        false,
-		LocalEndpoint: localEndpoint,
-	}
-
-	if s.ParentSpanID != (trace.SpanID{}) {
-		id := convertSpanID(s.ParentSpanID)
-		z.ParentID = &id
-	}
-
-	if s, e := s.StartTime, s.EndTime; !s.IsZero() && !e.IsZero() {
-		z.Duration = e.Sub(s)
-	}
-
-	// construct Tags from s.Attributes and s.Status.
-	if len(s.Attributes) != 0 {
-		m := make(map[string]string, len(s.Attributes)+2)
-		for key, value := range s.Attributes {
-			switch v := value.(type) {
-			case string:
-				m[key] = v
-			case bool:
-				if v {
-					m[key] = "true"
-				} else {
-					m[key] = "false"
-				}
-			case int64:
-				m[key] = strconv.FormatInt(v, 10)
-			case float64:
-				m[key] = strconv.FormatFloat(v, 'f', -1, 64)
-			}
-		}
-		z.Tags = m
-	}
-	if s.Status.Code != 0 || s.Status.Message != "" {
-		if z.Tags == nil {
-			z.Tags = make(map[string]string, 2)
-		}
-		if s.Status.Code != 0 {
-			z.Tags[statusCodeTagKey] = canonicalCodeString(s.Status.Code)
-		}
-		if s.Status.Message != "" {
-			z.Tags[statusDescriptionTagKey] = s.Status.Message
-		}
-	}
-
-	// construct Annotations from s.Annotations and s.MessageEvents.
-	if len(s.Annotations) != 0 || len(s.MessageEvents) != 0 {
-		z.Annotations = make([]model.Annotation, 0, len(s.Annotations)+len(s.MessageEvents))
-		for _, a := range s.Annotations {
-			z.Annotations = append(z.Annotations, model.Annotation{
-				Timestamp: a.Time,
-				Value:     a.Message,
-			})
-		}
-		for _, m := range s.MessageEvents {
-			a := model.Annotation{
-				Timestamp: m.Time,
-			}
-			switch m.EventType {
-			case trace.MessageEventTypeSent:
-				a.Value = fmt.Sprintf("Sent %d bytes", m.UncompressedByteSize)
-			case trace.MessageEventTypeRecv:
-				a.Value = fmt.Sprintf("Received %d bytes", m.UncompressedByteSize)
-			default:
-				a.Value = "<?>"
-			}
-			z.Annotations = append(z.Annotations, a)
-		}
-	}
-
-	return z
-}

vendor/git.autistici.org/ai3/go-common/.gitlab-ci.yml

@@ -3,8 +3,14 @@ stages:
 
 run_tests:
   stage: test
-  image: "debian:bullseye"
+  image: registry.git.autistici.org/ai3/docker/test/golang:master
   script:
-    - "apt update"
-    - "env DEBIAN_FRONTEND=noninteractive apt -y install golang git"
-    - "go test -v ./..."
+    - run-go-test ./...
+  artifacts:
+    when: always
+    reports:
+      coverage_report:
+        coverage_format: cobertura
+        path: cover.xml
+      junit: report.xml
+

vendor/git.autistici.org/ai3/go-common/clientutil/balancer.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"log"
 	"math/rand"
+	"mime"
 	"net/http"
 	"net/url"
 	"os"
@@ -16,7 +17,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/cenkalti/backoff"
+	"github.com/cenkalti/backoff/v4"
 )
 
 // Our own narrow logger interface.
@@ -158,7 +159,7 @@ func (b *balancedBackend) Call(ctx context.Context, shard, path string, req, res
 		defer httpResp.Body.Close() // nolint
 
 		// Decode the response, unless the 'resp' output is nil.
-		if httpResp.Header.Get("Content-Type") != "application/json" {
+		if ct, _, _ := mime.ParseMediaType(httpResp.Header.Get("Content-Type")); ct != "application/json" {
 			return errors.New("not a JSON response")
 		}
 		if resp == nil {

vendor/git.autistici.org/ai3/go-common/go.mod

-module git.autistici.org/ai3/go-common
-
-go 1.11
-
-require (
-	contrib.go.opencensus.io/exporter/zipkin v0.1.2
-	github.com/amoghe/go-crypt v0.0.0-20191109212615-b2ff80594b7f
-	github.com/bbrks/wrap/v2 v2.5.0
-	github.com/cenkalti/backoff v2.2.1+incompatible
-	github.com/cenkalti/backoff/v4 v4.1.0
-	github.com/coreos/go-systemd/v22 v22.1.0
-	github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594
-	github.com/go-asn1-ber/asn1-ber v1.5.3
-	github.com/go-ldap/ldap/v3 v3.2.4
-	github.com/gofrs/flock v0.8.0 // indirect
-	github.com/google/go-cmp v0.5.4
-	github.com/gorilla/handlers v1.5.1
-	github.com/lunixbochs/struc v0.0.0-20200707160740-784aaebc1d40
-	github.com/miscreant/miscreant.go v0.0.0-20200214223636-26d376326b75
-	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/openzipkin/zipkin-go v0.2.5
-	github.com/pierrec/lz4 v2.0.5+incompatible // indirect
-	github.com/prometheus/client_golang v1.9.0
-	github.com/russross/blackfriday/v2 v2.1.0
-	github.com/theckman/go-flock v0.8.0
-	github.com/tstranex/u2f v1.0.0
-	go.opencensus.io v0.22.5
-	golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad
-	golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421 // indirect
-	golang.org/x/sync v0.0.0-20201207232520-09787c993a3a
-	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
-)

vendor/git.autistici.org/ai3/go-common/serverutil/http.go

 package serverutil
 
 import (
+	"compress/gzip"
 	"context"
 	"crypto/tls"
 	"fmt"
@@ -16,12 +17,25 @@ import (
 	"time"
 
 	"git.autistici.org/ai3/go-common/tracing"
+	"github.com/NYTimes/gziphandler"
 	"github.com/coreos/go-systemd/v22/daemon"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
-var gracefulShutdownTimeout = 3 * time.Second
+var (
+	gracefulShutdownTimeout = 3 * time.Second
+
+	gzipLevel        = gzip.BestSpeed
+	gzipMinSize      = 1300
+	gzipContentTypes = []string{
+		"application/json",
+		"application/javascript",
+		"text/html",
+		"text/plain",
+		"text/css",
+	}
+)
 
 // ServerConfig stores common HTTP/HTTPS server configuration parameters.
 type ServerConfig struct {
@@ -29,20 +43,23 @@ type ServerConfig struct {
 	MaxInflightRequests int              `yaml:"max_inflight_requests"`
 	RequestTimeoutSecs  int              `yaml:"request_timeout"`
 	TrustedForwarders   []string         `yaml:"trusted_forwarders"`
+
+	// TODO: switch do disable_compression (flip default) later.
+	EnableCompression bool `yaml:"enable_compression"`
 }
 
-func (config *ServerConfig) buildHTTPServer(h http.Handler) (*http.Server, error) {
+func (config *ServerConfig) buildHTTPHandler(h http.Handler) (http.Handler, *tls.Config, error) {
 	var tlsConfig *tls.Config
 	var err error
 	if config != nil {
 		if config.TLS != nil {
 			tlsConfig, err = config.TLS.TLSConfig()
 			if err != nil {
-				return nil, err
+				return nil, nil, err
 			}
 			h, err = config.TLS.TLSAuthWrapper(h)
 			if err != nil {
-				return nil, err
+				return nil, nil, err
 			}
 		}
 
@@ -51,7 +68,7 @@ func (config *ServerConfig) buildHTTPServer(h http.Handler) (*http.Server, error
 		if len(config.TrustedForwarders) > 0 {
 			h, err = newProxyHeaders(h, config.TrustedForwarders)
 			if err != nil {
-				return nil, err
+				return nil, nil, err
 			}
 		}
 
@@ -68,16 +85,60 @@ func (config *ServerConfig) buildHTTPServer(h http.Handler) (*http.Server, error
 		}
 	}
 
+	// Add all the default handlers (health, monitoring, etc).
+	h = addDefaultHandlers(h)
+
+	// Optionally enable compression.
+	if config != nil && config.EnableCompression {
+		gzwrap, err := gziphandler.GzipHandlerWithOpts(
+			gziphandler.CompressionLevel(gzipLevel),
+			gziphandler.MinSize(gzipMinSize),
+			gziphandler.ContentTypes(gzipContentTypes),
+		)
+		if err != nil {
+			return nil, nil, err
+		}
+		h = gzwrap(h)
+	}
+
+	return h, tlsConfig, nil
+}
+
+func buildListener(addr string, tlsConfig *tls.Config) (net.Listener, error) {
+	// Create the net.Listener first, so we can detect
+	// initialization-time errors safely.
+	l, err := net.Listen("tcp", addr)
+	if err != nil {
+		return nil, err
+	}
+	if tlsConfig != nil {
+		l = tls.NewListener(l, tlsConfig)
+	}
+	return l, nil
+}
+
+func buildServer(h http.Handler, config *ServerConfig, addr string) (*http.Server, error) {
+	// Wrap with tracing handler (exclude metrics and other
+	// debugging endpoints).
+	h = tracing.WrapHandler(h, guessEndpointName(addr))
+
+	// Create the top-level HTTP handler with all our additions.
+	hh, tlsConfig, err := config.buildHTTPHandler(h)
+	if err != nil {
+		return nil, err
+	}
+
 	// These are not meant to be external-facing servers, so we
 	// can be generous with the timeouts to keep the number of
 	// reconnections low.
-	return &http.Server{
-		Handler:      addDefaultHandlers(h),
-		ReadTimeout:  30 * time.Second,
-		WriteTimeout: 30 * time.Second,
+	srv := &http.Server{
+		Handler:           hh,
+		ReadHeaderTimeout: 30 * time.Second,
 		IdleTimeout:       600 * time.Second,
 		TLSConfig:         tlsConfig,
-	}, nil
+	}
+
+	return srv, nil
 }
 
 // Serve HTTP(S) content on the specified address. If config.TLS is
@@ -87,25 +148,15 @@ func (config *ServerConfig) buildHTTPServer(h http.Handler) (*http.Server, error
 // the listener, otherwise it will handle graceful termination on
 // SIGINT or SIGTERM and return nil.
 func Serve(h http.Handler, config *ServerConfig, addr string) error {
-	// Wrap with tracing handler (exclude metrics and other
-	// debugging endpoints).
-	h = tracing.WrapHandler(h, guessEndpointName(addr))
-
-	// Create the HTTP server.
-	srv, err := config.buildHTTPServer(h)
+	srv, err := buildServer(h, config, addr)
 	if err != nil {
 		return err
 	}
 
-	// Create the net.Listener first, so we can detect
-	// initialization-time errors safely.
-	l, err := net.Listen("tcp", addr)
+	l, err := buildListener(addr, srv.TLSConfig)
 	if err != nil {
 		return err
 	}
-	if srv.TLSConfig != nil {
-		l = tls.NewListener(l, srv.TLSConfig)
-	}
 
 	// Install a signal handler for gentle process termination.
 	done := make(chan struct{})
@@ -142,6 +193,38 @@ func Serve(h http.Handler, config *ServerConfig, addr string) error {
 	return nil
 }
 
+// ServeWithContext operates like Serve but with a controlling Context
+// that can be used to stop the HTTP server.
+func ServeWithContext(ctx context.Context, h http.Handler, config *ServerConfig, addr string) error {
+	srv, err := buildServer(h, config, addr)
+	if err != nil {
+		return err
+	}
+
+	l, err := buildListener(addr, srv.TLSConfig)
+	if err != nil {
+		return err
+	}
+
+	go func() {
+		<-ctx.Done()
+
+		sctx, cancel := context.WithTimeout(context.Background(), gracefulShutdownTimeout)
+		srv.Shutdown(sctx) // nolint: errcheck
+		srv.Close()
+		cancel()
+	}()
+
+	daemon.SdNotify(false, "READY=1") // nolint
+
+	err = srv.Serve(l)
+	if err == http.ErrServerClosed {
+		err = nil
+	}
+
+	return err
+}
+
 func addDefaultHandlers(h http.Handler) http.Handler {
 	root := http.NewServeMux()
 

vendor/git.autistici.org/ai3/go-common/serverutil/json.go

@@ -3,6 +3,7 @@ package serverutil
 import (
 	"encoding/json"
 	"log"
+	"mime"
 	"net/http"
 )
 
@@ -14,7 +15,7 @@ func DecodeJSONRequest(w http.ResponseWriter, r *http.Request, obj interface{})
 		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 		return false
 	}
-	if r.Header.Get("Content-Type") != "application/json" {
+	if ct, _, _ := mime.ParseMediaType(r.Header.Get("Content-Type")); ct != "application/json" {
 		http.Error(w, "Need JSON request", http.StatusBadRequest)
 		return false
 	}
@@ -29,19 +30,15 @@ func DecodeJSONRequest(w http.ResponseWriter, r *http.Request, obj interface{})
 
 // EncodeJSONResponse writes an application/json response to w.
 func EncodeJSONResponse(w http.ResponseWriter, obj interface{}) {
-	data, err := json.Marshal(obj)
-	if err != nil {
-		log.Printf("JSON serialization error: %v", err)
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-
 	w.Header().Set("Content-Type", "application/json")
 	w.Header().Set("Pragma", "no-cache")
 	w.Header().Set("Cache-Control", "no-store")
 	w.Header().Set("Expires", "-1")
 	w.Header().Set("X-Content-Type-Options", "nosniff")
-	if _, err = w.Write(data); err != nil {
-		log.Printf("error writing response: %v", err)
+
+	err := json.NewEncoder(w).Encode(obj)
+	if err != nil {
+		log.Printf("error writing JSON response: %v", err)
+		// Too late to return an error to the client now.
 	}
 }

vendor/git.autistici.org/ai3/go-common/serverutil/proxy_headers.go

@@ -4,12 +4,11 @@ import (
 	"fmt"
 	"net"
 	"net/http"
-
-	"github.com/gorilla/handlers"
+	"strings"
 )
 
 type proxyHeaders struct {
-	wrap, phWrap http.Handler
+	wrap       http.Handler
 	forwarders []net.IPNet
 }
 
@@ -20,7 +19,6 @@ func newProxyHeaders(h http.Handler, trustedForwarders []string) (http.Handler,
 	}
 	return &proxyHeaders{
 		wrap:       h,
-		phWrap:     handlers.ProxyHeaders(h),
 		forwarders: f,
 	}, nil
 }
@@ -32,12 +30,28 @@ func (p *proxyHeaders) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 	ip := net.ParseIP(host)
 	if ip != nil && matchIPNetList(ip, p.forwarders) {
-		p.phWrap.ServeHTTP(w, r)
-		return
+		if fwd := getForwardedIP(r); fwd != "" {
+			r.RemoteAddr = fwd
+		}
 	}
 	p.wrap.ServeHTTP(w, r)
 }
 
+// Parse the X-Real-IP or X-Forwarded-For headers, if present, to get
+// the original client IP.
+func getForwardedIP(r *http.Request) string {
+	if s := r.Header.Get("X-Real-IP"); s != "" {
+		return s
+	}
+	if s := r.Header.Get("X-Forwarded-For"); s != "" {
+		if n := strings.IndexByte(s, ','); n > 0 {
+			s = s[:n]
+		}
+		return s
+	}
+	return ""
+}
+
 func fullMask(ip net.IP) net.IPMask {
 	if ip.To4() == nil {
 		return net.CIDRMask(128, 128)

vendor/git.autistici.org/ai3/go-common/serverutil/tls.go

@@ -14,7 +14,8 @@ import (
 
 // TLSAuthACL describes a single access control entry. Path and
 // CommonName are anchored regular expressions (they must match the
-// entire string).
+// entire string). The first path to match in a list of ACLs will
+// identify the ACL to be applied.
 type TLSAuthACL struct {
 	Path       string `yaml:"path"`
 	CommonName string `yaml:"cn"`
@@ -32,10 +33,11 @@ func (p *TLSAuthACL) compile() error {
 	return err
 }
 
-func (p *TLSAuthACL) match(req *http.Request) bool {
-	if !p.pathRx.MatchString(req.URL.Path) {
-		return false
+func (p *TLSAuthACL) matchPath(req *http.Request) bool {
+	return p.pathRx.MatchString(req.URL.Path)
 }
+
+func (p *TLSAuthACL) matchCN(req *http.Request) bool {
 	for _, cert := range req.TLS.PeerCertificates {
 		if p.cnRx.MatchString(cert.Subject.CommonName) {
 			return true
@@ -81,10 +83,14 @@ func (c *TLSAuthConfig) match(req *http.Request) bool {
 	if c == nil || len(c.Allow) == 0 {
 		return true
 	}
+
 	for _, acl := range c.Allow {
-		if acl.match(req) {
+		if acl.matchPath(req) {
+			if acl.matchCN(req) {
 				return true
 			}
+			break
+		}
 	}
 	return false
 }
@@ -117,6 +123,7 @@ func (c *TLSServerConfig) TLSConfig() (*tls.Config, error) {
 		CipherSuites:             serverCiphers,
 		MinVersion:               tls.VersionTLS12,
 		PreferServerCipherSuites: true,
+		NextProtos:               []string{"h2", "http/1.1"},
 	}
 
 	// Require client certificates if a CA is specified.

vendor/git.autistici.org/ai3/go-common/tracing/tracing.go

@@ -9,22 +9,24 @@ import (
 	"os"
 	"path/filepath"
 	"strconv"
+	"strings"
 	"sync"
 
-	openzipkin "github.com/openzipkin/zipkin-go"
-	zipkinHTTP "github.com/openzipkin/zipkin-go/reporter/http"
-	"contrib.go.opencensus.io/exporter/zipkin"
-	"go.opencensus.io/plugin/ochttp"
-	"go.opencensus.io/trace"
+	othttp "go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
+	b3 "go.opentelemetry.io/contrib/propagators/b3"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/exporters/zipkin"
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/sdk/resource"
+	"go.opentelemetry.io/otel/sdk/trace"
+	semconv "go.opentelemetry.io/otel/semconv/v1.12.0"
 )
 
 var (
 	// Enabled reports whether tracing is globally enabled or not.
 	Enabled bool
 
-	// The active tracing configuration, if Enabled is true.
-	config tracingConfig
-
 	initOnce sync.Once
 )
 
@@ -38,7 +40,7 @@ type tracingConfig struct {
 // Read the global tracing configuration file. Its location is
 // hardcoded, but it can be overriden using the TRACING_CONFIG
 // environment variable.
-func readTracingConfig() error {
+func readTracingConfig() (*tracingConfig, error) {
 	// Read and decode configuration.
 	cfgPath := globalTracingConfigPath
 	if s := os.Getenv("TRACING_CONFIG"); s != "" {
@@ -46,20 +48,21 @@ func readTracingConfig() error {
 	}
 	data, err := ioutil.ReadFile(cfgPath)
 	if err != nil {
-		return err
+		return nil, err
 	}
 
+	var config tracingConfig
 	if err := json.Unmarshal(data, &config); err != nil {
 		log.Printf("warning: error in tracing configuration: %v, tracing disabled", err)
-		return err
+		return nil, err
 	}
 
 	if config.ReportURL == "" {
 		log.Printf("warning: tracing configuration contains no report_url, tracing disabled")
-		return errors.New("no report_url")
+		return nil, errors.New("no report_url")
 	}
 
-	return nil
+	return &config, nil
 }
 
 // Compute the service name for Zipkin: this is usually the program
@@ -69,7 +72,44 @@ func getServiceName() string {
 	if s := os.Getenv("TRACING_SERVICE"); s != "" {
 		return s
 	}
-	return filepath.Base(os.Args[0])
+	if s, err := os.Executable(); err == nil {
+		return filepath.Base(s)
+	}
+	return "unknown_service"
+}
+
+func defaultResource(serviceName string) *resource.Resource {
+	attrs := []attribute.KeyValue{
+		semconv.ServiceNameKey.String(serviceName),
+	}
+
+	if s, err := os.Hostname(); err == nil {
+		attrs = append(attrs, semconv.HostNameKey.String(s))
+	}
+	if s := os.Getenv("FLOAT_SERVICE"); s != "" {
+		attrs = append(attrs, attribute.Key("float.service").String(s))
+	}
+	if s := os.Getenv("FLOAT_CONTAINER_NAME"); s != "" {
+		attrs = append(attrs, semconv.ContainerNameKey.String(s))
+	}
+	if s := os.Getenv("FLOAT_CONTAINER_IMAGE"); s != "" {
+		imageName := s
+		tag := "latest"
+		if strings.Contains(imageName, ":") {
+			parts := strings.SplitN(imageName, ":", 2)
+			imageName = parts[0]
+			tag = parts[1]
+		}
+
+		attrs = append(attrs, semconv.ContainerImageNameKey.String(imageName))
+		attrs = append(attrs, semconv.ContainerImageTagKey.String(tag))
+	}
+
+	r, _ := resource.Merge(
+		resource.Default(),
+		resource.NewWithAttributes(semconv.SchemaURL, attrs...),
+	)
+	return r
 }
 
 // Initialize tracing. Tracing will be enabled if the system-wide
@@ -79,49 +119,55 @@ func getServiceName() string {
 // We need to check the configuration as soon as possible, because
 // it's likely that client transports are created before HTTP servers,
 // and we need to wrap them with opencensus at creation time.
-func init() {
+func initTracing(serviceName string) {
+	initOnce.Do(func() {
 		// Kill switch from environment.
 		if s := os.Getenv("TRACING_ENABLE"); s == "0" {
 			return
 		}
 
-	if err := readTracingConfig(); err != nil {
+		config, err := readTracingConfig()
+		if err != nil {
 			return
 		}
 
-	Enabled = true
-}
-
-func initTracing(endpointAddr string) {
-	if !Enabled {
-		return
-	}
-	initOnce.Do(func() {
-		localEndpoint, err := openzipkin.NewEndpoint(getServiceName(), endpointAddr)
+		ze, err := zipkin.New(config.ReportURL)
 		if err != nil {
-			log.Printf("warning: error creating tracing endpoint: %v, tracing disabled", err)
+			log.Printf("error creating Zipkin exporter: %v", err)
 			return
 		}
 
-		reporter := zipkinHTTP.NewReporter(config.ReportURL)
-		ze := zipkin.NewExporter(reporter, localEndpoint)
-		trace.RegisterExporter(ze)
-
-		var tc trace.Config
+		// The sampling policy only applies to incoming requests for
+		// which tracing is not already enabled: in this case, we
+		// always pass-through.
+		var sampler trace.Sampler
 		switch config.Sample {
 		case "", "always":
-			tc.DefaultSampler = trace.AlwaysSample()
+			sampler = trace.AlwaysSample()
 		case "never":
-			tc.DefaultSampler = trace.NeverSample()
+			sampler = trace.NeverSample()
 		default:
 			frac, err := strconv.ParseFloat(config.Sample, 64)
 			if err != nil {
 				log.Printf("warning: error in tracing configuration: sample: %v, tracing disabled", err)
 				return
 			}
-			tc.DefaultSampler = trace.ProbabilitySampler(frac)
+			sampler = trace.TraceIDRatioBased(frac)
 		}
-		trace.ApplyConfig(tc)
+
+		tp := trace.NewTracerProvider(
+			trace.WithSampler(trace.ParentBased(sampler)),
+			trace.WithBatcher(ze),
+			trace.WithResource(defaultResource(serviceName)),
+		)
+
+		otel.SetTracerProvider(tp)
+
+		otel.SetTextMapPropagator(
+			propagation.NewCompositeTextMapPropagator(
+				propagation.TraceContext{},
+				propagation.Baggage{},
+				b3.New()))
 
 		log.Printf("tracing enabled (report_url %s)", config.ReportURL)
 
@@ -131,14 +177,16 @@ func initTracing(endpointAddr string) {
 
 // Init tracing support, if not using WrapHandler.
 func Init() {
-	initTracing("")
+	initTracing(getServiceName())
 }
 
 // WrapTransport optionally wraps a http.RoundTripper with OpenCensus
 // tracing functionality, if it is globally enabled.
+//
+// Must call Init() first.
 func WrapTransport(t http.RoundTripper) http.RoundTripper {
 	if Enabled {
-		t = &ochttp.Transport{Base: t}
+		t = othttp.NewTransport(t)
 	}
 	return t
 }
@@ -146,9 +194,17 @@ func WrapTransport(t http.RoundTripper) http.RoundTripper {
 // WrapHandler wraps a http.Handler with OpenCensus tracing
 // functionality, if globally enabled. Automatically calls Init().
 func WrapHandler(h http.Handler, endpointAddr string) http.Handler {
-	if Enabled {
-		initTracing(endpointAddr)
-		h = &ochttp.Handler{Handler: h}
-	}
+	serviceName := getServiceName()
+	initTracing(serviceName)
+	if !Enabled {
 		return h
 	}
+
+	// Format span names with the request URL path.
+	return othttp.NewHandler(
+		h, serviceName,
+		othttp.WithSpanNameFormatter(func(op string, r *http.Request) string {
+			return r.URL.Path
+		}),
+	)
+}

vendor/git.autistici.org/ai3/tools/replds/.gitlab-ci.yml

-include: "https://git.autistici.org/ai3/build-deb/raw/master/ci-buster-backports.yml"
+include:
+  - "https://git.autistici.org/pipelines/debian/raw/master/common.yml"
+  - "https://git.autistici.org/pipelines/images/test/golang/raw/master/ci.yml"

vendor/git.autistici.org/ai3/tools/replds/go.mod

-module git.autistici.org/ai3/tools/replds
-
-go 1.14
-
-require (
-	git.autistici.org/ai3/go-common v0.0.0-20210110180225-a05c683cfe23
-	github.com/coreos/go-systemd/v22 v22.1.0
-	github.com/google/subcommands v1.2.0
-	github.com/prometheus/client_golang v1.9.0
-	gopkg.in/yaml.v2 v2.3.0
-)

vendor/github.com/NYTimes/gziphandler/.gitignore

+*.swp

vendor/github.com/NYTimes/gziphandler/.travis.yml

+language: go
+go:
+  - 1.x
+  - tip
+env:
+  - GO111MODULE=on
+install:
+  - go mod download
+script:
+  - go test -race -v

vendor/github.com/NYTimes/gziphandler/CODE_OF_CONDUCT.md

+---
+layout: code-of-conduct
+version: v1.0
+---
+
+This code of conduct outlines our expectations for participants within the **NYTimes/gziphandler** community, as well as steps to reporting unacceptable behavior. We are committed to providing a welcoming and inspiring community for all and expect our code of conduct to be honored. Anyone who violates this code of conduct may be banned from the community.
+
+Our open source community strives to:
+
+* **Be friendly and patient.**
+* **Be welcoming**: We strive to be a community that welcomes and supports people of all backgrounds and identities. This includes, but is not limited to members of any race, ethnicity, culture, national origin, colour, immigration status, social and economic class, educational level, sex, sexual orientation, gender identity and expression, age, size, family status, political belief, religion, and mental and physical ability.
+* **Be considerate**: Your work will be used by other people, and you in turn will depend on the work of others. Any decision you take will affect users and colleagues, and you should take those consequences into account when making decisions. Remember that we're a world-wide community, so you might not be communicating in someone else's primary language.
+* **Be respectful**:  Not all of us will agree all the time, but disagreement is no excuse for poor behavior and poor manners. We might all experience some frustration now and then, but we cannot allow that frustration to turn into a personal attack. It’s important to remember that a community where people feel uncomfortable or threatened is not a productive one.
+* **Be careful in the words that we choose**: we are a community of professionals, and we conduct ourselves professionally. Be kind to others. Do not insult or put down other participants. Harassment and other exclusionary behavior aren't acceptable.
+* **Try to understand why we disagree**: Disagreements, both social and technical, happen all the time. It is important that we resolve disagreements and differing views constructively. Remember that we’re different. The strength of our community comes from its diversity, people from a wide range of backgrounds. Different people have different perspectives on issues. Being unable to understand why someone holds a viewpoint doesn’t mean that they’re wrong. Don’t forget that it is human to err and blaming each other doesn’t get us anywhere. Instead, focus on helping to resolve issues and learning from mistakes.
+
+## Definitions
+
+Harassment includes, but is not limited to:
+
+- Offensive comments related to gender, gender identity and expression, sexual orientation, disability, mental illness, neuro(a)typicality, physical appearance, body size, race, age, regional discrimination, political or religious affiliation
+- Unwelcome comments regarding a person’s lifestyle choices and practices, including those related to food, health, parenting, drugs, and employment
+- Deliberate misgendering. This includes deadnaming or persistently using a pronoun that does not correctly reflect a person's gender identity. You must address people by the name they give you when not addressing them by their username or handle
+- Physical contact and simulated physical contact (eg, textual descriptions like “*hug*” or “*backrub*”) without consent or after a request to stop
+- Threats of violence, both physical and psychological
+- Incitement of violence towards any individual, including encouraging a person to commit suicide or to engage in self-harm
+- Deliberate intimidation
+- Stalking or following
+- Harassing photography or recording, including logging online activity for harassment purposes
+- Sustained disruption of discussion
+- Unwelcome sexual attention, including gratuitous or off-topic sexual images or behaviour
+- Pattern of inappropriate social contact, such as requesting/assuming inappropriate levels of intimacy with others
+- Continued one-on-one communication after requests to cease
+- Deliberate “outing” of any aspect of a person’s identity without their consent except as necessary to protect others from intentional abuse
+- Publication of non-harassing private communication
+
+Our open source community prioritizes marginalized people’s safety over privileged people’s comfort. We will not act on complaints regarding:
+
+- ‘Reverse’ -isms, including ‘reverse racism,’ ‘reverse sexism,’ and ‘cisphobia’
+- Reasonable communication of boundaries, such as “leave me alone,” “go away,” or “I’m not discussing this with you”
+- Refusal to explain or debate social justice concepts
+- Communicating in a ‘tone’ you don’t find congenial
+- Criticizing racist, sexist, cissexist, or otherwise oppressive behavior or assumptions
+
+
+### Diversity Statement
+
+We encourage everyone to participate and are committed to building a community for all. Although we will fail at times, we seek to treat everyone both as fairly and equally as possible. Whenever a participant has made a mistake, we expect them to take responsibility for it. If someone has been harmed or offended, it is our responsibility to listen carefully and respectfully, and do our best to right the wrong.
+
+Although this list cannot be exhaustive, we explicitly honor diversity in age, gender, gender identity or expression, culture, ethnicity, language, national origin, political beliefs, profession, race, religion, sexual orientation, socioeconomic status, and technical ability. We will not tolerate discrimination based on any of the protected
+characteristics above, including participants with disabilities.
+
+### Reporting Issues
+
+If you experience or witness unacceptable behavior—or have any other concerns—please report it by contacting us via **code@nytimes.com**. All reports will be handled with discretion. In your report please include:
+
+- Your contact information.
+- Names (real, nicknames, or pseudonyms) of any individuals involved. If there are additional witnesses, please
+include them as well. Your account of what occurred, and if you believe the incident is ongoing. If there is a publicly available record (e.g. a mailing list archive or a public IRC logger), please include a link.
+- Any additional information that may be helpful.
+
+After filing a report, a representative will contact you personally, review the incident, follow up with any additional questions, and make a decision as to how to respond. If the person who is harassing you is part of the response team, they will recuse themselves from handling your incident. If the complaint originates from a member of the response team, it will be handled by a different member of the response team. We will respect confidentiality requests for the purpose of protecting victims of abuse.
+
+### Attribution & Acknowledgements
+
+We all stand on the shoulders of giants across many open source communities.  We'd like to thank the communities and projects that established code of conducts and diversity statements as our inspiration:
+
+* [Django](https://www.djangoproject.com/conduct/reporting/)
+* [Python](https://www.python.org/community/diversity/)
+* [Ubuntu](http://www.ubuntu.com/about/about-ubuntu/conduct)
+* [Contributor Covenant](http://contributor-covenant.org/)
+* [Geek Feminism](http://geekfeminism.org/about/code-of-conduct/)
+* [Citizen Code of Conduct](http://citizencodeofconduct.org/)
+
+This Code of Conduct was based on https://github.com/todogroup/opencodeofconduct

vendor/github.com/NYTimes/gziphandler/CONTRIBUTING.md

+# Contributing to NYTimes/gziphandler
+
+This is an open source project started by handful of developers at The New York Times and open to the entire Go community.
+
+We really appreciate your help!
+
+## Filing issues
+
+When filing an issue, make sure to answer these five questions:
+
+1. What version of Go are you using (`go version`)?
+2. What operating system and processor architecture are you using?
+3. What did you do?
+4. What did you expect to see?
+5. What did you see instead?
+
+## Contributing code
+
+Before submitting changes, please follow these guidelines:
+
+1. Check the open issues and pull requests for existing discussions.
+2. Open an issue to discuss a new feature.
+3. Write tests.
+4. Make sure code follows the ['Go Code Review Comments'](https://github.com/golang/go/wiki/CodeReviewComments).
+5. Make sure your changes pass `go test`.
+6. Make sure the entire test suite passes locally and on Travis CI.
+7. Open a Pull Request.
+8. [Squash your commits](http://gitready.com/advanced/2009/02/10/squashing-commits-with-rebase.html) after receiving feedback and add a [great commit message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html).
+
+Unless otherwise noted, the gziphandler source files are distributed under the Apache 2.0-style license found in the LICENSE.md file.

vendor/github.com/NYTimes/gziphandler/LICENSE

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+      the terms of any separate license agreement you may have executed
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+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
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+   Copyright 2016-2017 The New York Times Company
+
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+   you may not use this file except in compliance with the License.
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+
+       http://www.apache.org/licenses/LICENSE-2.0
+
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vendor/github.com/NYTimes/gziphandler/README.md

+Gzip Handler
+============
+
+This is a tiny Go package which wraps HTTP handlers to transparently gzip the
+response body, for clients which support it. Although it's usually simpler to
+leave that to a reverse proxy (like nginx or Varnish), this package is useful
+when that's undesirable.
+
+## Install
+```bash
+go get -u github.com/NYTimes/gziphandler
+```
+
+## Usage
+
+Call `GzipHandler` with any handler (an object which implements the
+`http.Handler` interface), and it'll return a new handler which gzips the
+response. For example:
+
+```go
+package main
+
+import (
+	"io"
+	"net/http"
+	"github.com/NYTimes/gziphandler"
+)
+
+func main() {
+	withoutGz := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "text/plain")
+		io.WriteString(w, "Hello, World")
+	})
+
+	withGz := gziphandler.GzipHandler(withoutGz)
+
+	http.Handle("/", withGz)
+	http.ListenAndServe("0.0.0.0:8000", nil)
+}
+```
+
+
+## Documentation
+
+The docs can be found at [godoc.org][docs], as usual.
+
+
+## License
+
+[Apache 2.0][license].
+
+
+
+
+[docs]:     https://godoc.org/github.com/NYTimes/gziphandler
+[license]:  https://github.com/NYTimes/gziphandler/blob/master/LICENSE