Add experimental Pulsar code written by PayPal (open-telemetry#1683)

* initial version of the pulsar exporter (metrics). Tests yet to be added. (open-telemetry#1541)

authored-by: Shiva Param <sparam@paypal.com>
authored-by: Narasimha Rao <narasirao@paypal.com>
authored-by: narasimharaojm <madhunarasimharao@gmail.com>

* pulsarexporter: fix lint, remove failing tests (open-telemetry#1682)

This is an experimental component added by PayPal. Unit tests to be added later.

docs/components.md

@@ -51,3 +51,12 @@ new release. In addition, any of these components may be removed prior to the
 | [statsd](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/statsdreceiver)             |            |                                                                                                     |            |
 | [syslog](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/syslogreceiver)             |            |                                                                                                     |            |
 | [tcplog](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/tcplogreceiver)             |            |                                                                                                     |            |
+
+## Experimental
+
+These components should not be considered stable. They are made available
+for testing and validation purposes.
+
+| Receivers | Processors | Exporters                                     | Extensions |
+|-----------|------------|-----------------------------------------------|------------|
+|           |            | [pulsar](../internal/exporter/pulsarexporter) |            |

go.mod

@@ -84,6 +84,11 @@ require (
 	gopkg.in/yaml.v2 v2.4.0
 )
 
+require (
+	github.com/apache/pulsar-client-go v0.8.1
+	github.com/rs/zerolog v1.15.0
+)
+
 require (
 	cloud.google.com/go/compute v1.6.1 // indirect
 	cloud.google.com/go/iam v0.3.0 // indirect
@@ -92,6 +97,8 @@ require (
 	code.cloudfoundry.org/rfc5424 v0.0.0-20201103192249-000122071b78 // indirect
 	collectd.org v0.5.0 // indirect
 	contrib.go.opencensus.io/exporter/prometheus v0.4.1 // indirect
+	github.com/99designs/keyring v1.1.6 // indirect
+	github.com/AthenZ/athenz v1.10.39 // indirect
 	github.com/Azure/azure-pipeline-go v0.2.3 // indirect
 	github.com/Azure/azure-sdk-for-go v65.0.0+incompatible // indirect
 	github.com/Azure/azure-storage-blob-go v0.14.0 // indirect
@@ -104,6 +111,7 @@ require (
 	github.com/Azure/go-autorest/autorest/validation v0.3.1 // indirect
 	github.com/Azure/go-autorest/logger v0.2.1 // indirect
 	github.com/Azure/go-autorest/tracing v0.6.0 // indirect
+	github.com/DataDog/zstd v1.5.0 // indirect
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v0.32.1 // indirect
 	github.com/Microsoft/go-winio v0.5.2 // indirect
 	github.com/Microsoft/hcsshim v0.9.3 // indirect
@@ -116,7 +124,9 @@ require (
 	github.com/alecthomas/participle/v2 v2.0.0-alpha9 // indirect
 	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 // indirect
 	github.com/apache/arrow/go/arrow v0.0.0-20210818145353-234c94e4ce64 // indirect
+	github.com/apache/pulsar-client-go/oauth2 v0.0.0-20220120090717-25e59572242e // indirect
 	github.com/apache/thrift v0.16.0 // indirect
+	github.com/ardielle/ardielle-go v1.5.2 // indirect
 	github.com/armon/go-metrics v0.3.10 // indirect
 	github.com/armon/go-radix v1.0.0 // indirect
 	github.com/aws/aws-sdk-go v1.44.28 // indirect
@@ -141,6 +151,7 @@ require (
 	github.com/containerd/containerd v1.6.1 // indirect
 	github.com/coreos/go-semver v0.3.0 // indirect
 	github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf // indirect
+	github.com/danieljoos/wincred v1.0.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/denisenkom/go-mssqldb v0.12.0 // indirect
 	github.com/dennwc/varint v1.0.0 // indirect
@@ -149,6 +160,7 @@ require (
 	github.com/docker/docker v20.10.17+incompatible // indirect
 	github.com/docker/go-connections v0.4.1-0.20210727194412-58542c764a11 // indirect
 	github.com/docker/go-units v0.4.0 // indirect
+	github.com/dvsekhvalnov/jose2go v0.0.0-20200901110807-248326c1351b // indirect
 	github.com/eapache/go-resiliency v1.2.0 // indirect
 	github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21 // indirect
 	github.com/eapache/queue v1.1.0 // indirect
@@ -176,7 +188,9 @@ require (
 	github.com/go-stack/stack v1.8.1 // indirect
 	github.com/go-test/deep v1.0.8 // indirect
 	github.com/gobwas/glob v0.2.4-0.20181002190808-e7a84e9525fe // indirect
+	github.com/godbus/dbus v0.0.0-20190726142602-4481cbc300e2 // indirect
 	github.com/gogo/googleapis v1.4.1 // indirect
+	github.com/golang-jwt/jwt v3.2.2+incompatible // indirect
 	github.com/golang-jwt/jwt/v4 v4.3.0 // indirect
 	github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe // indirect
 	github.com/golang-sql/sqlexp v0.0.0-20170517235910-f1bb20e5a188 // indirect
@@ -199,6 +213,7 @@ require (
 	github.com/grafana/regexp v0.0.0-20220304095617-2e8d9baf4ac2 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
+	github.com/gsterjov/go-libsecret v0.0.0-20161001094733-a6f4afe4910c // indirect
 	github.com/hashicorp/consul/api v1.12.0 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
@@ -250,12 +265,14 @@ require (
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/karrick/godirwalk v1.10.3 // indirect
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
+	github.com/keybase/go-keychain v0.0.0-20190712205309-48d3d31d256d // indirect
 	github.com/klauspost/compress v1.15.6 // indirect
 	github.com/knadh/koanf v1.4.1 // indirect
 	github.com/kolo/xmlrpc v0.0.0-20201022064351-38db28db192b // indirect
 	github.com/leodido/go-urn v1.2.1 // indirect
 	github.com/leoluk/perflib_exporter v0.1.0 // indirect
 	github.com/lib/pq v1.10.3 // indirect
+	github.com/linkedin/goavro/v2 v2.9.8 // indirect
 	github.com/linode/linodego v1.5.0 // indirect
 	github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
 	github.com/magiconair/properties v1.8.6 // indirect
@@ -284,6 +301,7 @@ require (
 	github.com/mongodb/go-client-mongodb-atlas v0.2.0 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/mostynb/go-grpc-compression v1.1.16 // indirect
+	github.com/mtibben/percent v0.2.1 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/mwielbut/pointy v1.1.0 // indirect
 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
@@ -345,6 +363,7 @@ require (
 	github.com/signalfx/signalfx-go v1.20.0 // indirect
 	github.com/snowflakedb/gosnowflake v1.6.3 // indirect
 	github.com/soniah/gosnmp v0.0.0-20190220004421-68e8beac0db9 // indirect
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
 	github.com/spf13/afero v1.8.2 // indirect
 	github.com/spf13/cobra v1.4.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect