To meet opentelemetry standards, 'span.kind' tag needs to be set in all spans.
Adds new constant 'SpanKind' with value 'span.kind' in tags.go.

Determines 'span.kind' value for gqlgen is 'server'
Sets tag "'span.kind':'server'" for root spans generated from gqlgen
Sets tag "'component':'gqlgen'" for all spans generated from gqlgen
Modifies tests to check parent and child spans for newly added tags
Passes modified test

…gs for google-cloud-go/pubsub

Determines 'span.kind' value for google-cloud-go/pubsub is 'producer' or 'consumer' depending on context
Sets tag "'span.kind':'producer'" for root span created from Publish in google-cloud-go/pubsub
Sets tag "'span.kind':'consumer'" for final span created from WrapRecieveHandler in ggoogle-cloud-go/pubsub
Sets tag "'component':'google-cloud-go/pubsub'" for all spans generated from google-cloud-go/pubsub
Modifies tests to check parent and child spans for newly added tags
Passes modified test

… for go-elasticsearch

Determines 'span.kind' value for go-elasticsearch is 'client'
Sets tag "'span.kind':'client'" for root spans generated from go-elasticsearch
Sets tag "'component':'go-elasticsearch'" for all spans generated from go-elasticsearch
Modifies tests to check spans for newly added tags
Passes modified test and integration tests for elasticsearch_v6 and elasticsearch_v7

Determines 'span.kind' value for all versions of go-redis is 'client'
Sets tag "'span.kind':'client'" for root spans generated from all versions of go-redis
Sets tag "'component':'go-redis'" for all spans generated from all versions of go-redis
Modifies tests to check spans for newly added tags
Passes modified test and integration tests for redis, redis.v7, redis.v8

…' tags for mongo-go-driver

Determines 'span.kind' value for mongo-go-driver is 'client'
Sets tag "'span.kind':'client'" for root spans generated from mongo-go-driver
Sets tag "'component':'mongo-go-driver'" for all spans generated from mongo-go-driver
Modifies tests to check spans for newly added tags
Passes modified test and integration tests for mongo with v4.4.6 (Version did not require AVX support)

Determines 'span.kind' value for gorilla/mux is ‘server’
Sets tag "'span.kind':'server'" for root spans generated from gorilla/mux
Sets tag "'component':'gorilla/mux'" for all spans generated from gorilla/mux
Modifies tests to check spans for newly added tags
Passes modified test

Determines 'span.kind' value for net/http is ‘server’ or ‘client’
Sets tag "'span.kind':'client'" for root spans generated from roundtripper
Sets tag "'span.kind’:’server’” for root spans generated from servehttp or wrapHandler
Sets tag "'component’:’net/http’” for all spans generated from net/http
Modifies tests to check spans for newly added tags
Passes modified test

…afka-go

Determines 'span.kind' value for kafka-go is ‘producer’ or ‘consumer’
Sets tag "'span.kind':'producer'" for root spans generated from producer
Sets tag "'span.kind’:’consumer’” for root spans generated from consumers
Sets tag "'component’:’kafka-go’” for all spans generated from kafka-go
Modifies tests to check spans for newly added tags
Passes modified test and integrations test

…kind' tags for confluent-kafka-go

Determines 'span.kind' value for confluent-kafka-go is ‘producer’ or ‘consumer’
Sets tag "'span.kind':'producer'" for root spans generated from producer
Sets tag "'span.kind’:’consumer’” for root spans generated from consumers
Sets tag "'component’:’confluent-kafka-go’” for all spans generated from confluent-kafka-go

Determines 'span.kind' value for aws is ‘client’
Sets tag "'span.kind':'client'" for root spans generated from aws
Sets tag "'component’:’aws-sdk-go’” for all spans generated from aws-sdk-go
Sets tag "'component’:’aws-sdk-go-v2’” for all spans generated from aws-sdk-go-v2
Modifies tests to check spans for newly added tags
Passes modified test

…s for gomemcache

Determines 'span.kind' value for gomemcache is ‘client’
Sets tag "'span.kind':'client'" for root spans generated from gomemcache
Sets tag "'component’:’gomemcache’” for all spans generated from gomemcache
Modifies tests to check spans for newly added tags
Passes modified test and integration tests

Determines 'span.kind' value for database/sql is ‘client’
Sets tag "'span.kind':'client'" for root spans generated from database/sql
Sets tag "'component’:’database/sql’” for all spans generated from database/sql
Modifies tests to check spans for newly added tags
Passes modified test and integration tests

…restful

Determines 'span.kind' value for go-restful is ‘server’
Sets tag "'span.kind’:’server’” for root spans generated from go-restful
Sets tag "'component’:’go-restful’” for all spans generated from go-restful
Modifies tests to check spans for newly added tags
Passes modified test

Determines 'span.kind' value for redigo is ‘client’
Sets tag "'span.kind’:’client’” for root spans generated from redigo
Sets tag "'component’:’redigo’” for all spans generated from redigo
Modifies tests to check spans for newly added tags
Passes modified test

Determines 'span.kind' value for gin is ‘client’
Sets tag "'span.kind’:’client’” for root spans generated from gin
Sets tag "'component’:’gin’” for all spans generated from gin
Does not set span.kind tag for spans from HTML rendering as that is a child span
Modifies tests to check spans for newly added tags
Passes modified test

Adds constants to be used for 'span_kind' tags used for identification
Values are either server, client, producer, consumer, or internal

Replaces string values in 'span_kind' tags with constants defined in ddtrace/ext/span_kind.go
Adds version to component tag for go-redis

…ce-go into general-tag-changes

Renames constants to meet linter requirement

Replaces spankind constants with new values set in previous commit
Fixes spankind values for redis to correctly reflect producer/consumer
Passes segmention/kafka.go.v0 tests

Changes 'span.kind' string literal to ext.SpanKind in tests for various integrations

Fixes order of imports to meet linting standard

Determines 'span.kind' value for mgo is ‘client’
Sets tag "'span.kind’:’client’” for root spans generated from mgo
Sets tag "'component’:’mgo’” for all spans generated from mgo
Does not set span.kind for spans created from Iter() because those generate child spans after
Modifies tests to check spans for newly added tags
Adds new test to check no span.kind tag is set for Iter()
Passes modified test and integration tests

Changes pre-existing span.kind server string literal to constant ext.SpanKindServer

Changes span.kind value from client to server
Determined that span.kind value here should be server
Previous classification of client was incorrect and fixed

Determines 'span.kind' value for go-chi is ‘server’
Sets tag "'span.kind’:’server’” for root spans generated from go-chi
Sets tag "'component’:’chi’” or "'component’:’chi.v5’” for all spans generated from go-chi depending on version
Modifies tests to check spans for newly added tags
Passes modified test and integration tests

Changes string literals for span.kind values to constants for existing tests in various integrations

Determines 'span.kind' value for go-pg is ‘client’
Sets tag "'span.kind’:’client’” for root spans generated from go-pg
Sets tag "'component’:’pg.v10’” for all spans generated from go-pg
Modifies tests to check spans for newly added tags
Passes modified test and integration tests

Determines 'span.kind' value for gocql is ‘client’
Sets tag "'span.kind’:’client’” for root spans generated from gocql
Sets tag "'component’:’gocql’” for all spans generated from gocql
Modifies tests to check spans for newly added tags
Passes modified test and integration tests

Determines 'span.kind' value for fiber.v2 is ‘server’
Sets tag "'span.kind’:’server’” for root spans generated from fiber.v2
Sets tag "'component’:’fiber.v2’” for all spans generated from fiber.v2
Modifies tests to check spans for newly added tags
Passes modified test

Sets tag "'component’:’graphql-go” for all spans generated from graphql-go
Does not set span.kind tag for graphql-go to assume default internal value
Modifies tests to check spans for newly added tags
Passes modified test and integration tests

Re-determined span.kind value for gqlgen to be internal
Removes span.kind tag to assume default internal value
Passes all tests

Does not set span.kind tag for jinzhu/gorm.v1 to assume default internal value
Sets tag "'component’:’jinzhu/gorm.v1’” for all spans generated from jinzhu/gorm.v1
Modifies tests to check spans for newly added tags
Passes modified test and integration tests

Does not set span.kind tag for gorm.io/gorm.v1 to assume default internal value
Sets tag "'component’:’gorm.io/gorm.v1’” for all spans generated from gorm.io/gorm.v1
Modifies tests to check spans for newly added tags
Passes modified test and integration tests

Does not set span.kind tag for jinzhu/gorm to assume default internal value
Sets tag "'component’:’jinzhu/gorm’” for all spans generated from jinzhu/gorm
Modifies tests to check spans for newly added tags
Passes modified test and integration tests

…r julienschmidt/httprouter

Determines 'span.kind' value for julienschmidt/httprouter is ‘server’
Sets tag "'span.kind’:’server” for root spans generated from julienschmidt/httprouter
Sets tag "'component’:’julienschmidt/httprouter’” for all spans generated from julienschmidt/httprouter
Modifies tests to check spans for newly added tags
Passes modified test

…for kubernetes/client-go

Determines 'span.kind' value for kubernetes/client-go is ‘client’
Sets tag "'span.kind’:’client” for root spans generated from kubernetes/client-go
Sets tag "'component’:’kubernetes/client-go’” for all spans generated from kubernetes/client-go
Modifies tests to check spans for newly added tags
Passes modified test

Determines 'span.kind' value for miekg/dns is ‘client’
Sets tag "'span.kind’:’client” for root spans generated from miekg/dns
Sets tag "'component’:’miekg/dns’” for all spans generated from miekg/dns
Modifies tests to check spans for newly added tags
Passes modified test

…elastic

Determines 'span.kind' value for olivere/elastic is ‘client’
Sets tag "'span.kind’:’client” for root spans generated from olivere/elastic
Sets tag "'component’:’olivere/elastic’” for all spans generated from oliviere/elastic
Modifies tests to check spans for newly added tags
Passes modified test

…arama

Determines 'span.kind' value for Shopify/sarama is 'producer' or 'consumer'
Sets tag "'span.kind':'producer'" for root producer spans generated from Shopify/sarama
Sets tag "'span.kind':'consumer'" for root consumer spans generated from Shopify/sarama
Sets tag "'component':'Shopify/sarama'" for all spans generated from Shopify/sarama
Modifies tests to check spans for newly added tags
Passes modified test

…goleveldb

Determines 'span.kind' value for syndtr/goleveldb is ‘client’
Sets tag "'span.kind’:’client’” for root spans generated from syndtr/goleveldb
Sets tag "'component':'syndtr/goleveldb'" for all spans generated from syndtr/goleveldb
Modifies tests to check spans for newly added tags
Passes modified test

…untdb

Determines 'span.kind' value for tidwall/buntdb is ‘client’
Sets tag "'span.kind’:’client’” for root spans generated from tidwall/buntdb
Sets tag "'component':'tidwall/buntdb'" for all spans generated from tidwall/buntdb
Modifies tests to check spans for newly added tags
Passes modified test

…groni

Determines 'span.kind' value for urfave/negroni is ‘server’
Sets tag "'span.kind’:’server’” for root spans generated from urfave/negroni
Sets tag "'component':'urfave/negroni'" for all spans generated from urfave/negroni
Modifies tests to check spans for newly added tags
Passes modified test

…n/goji.v1

Determines 'span.kind' value for zenazn/goji.v1 is ‘server’
Sets tag "'span.kind’:’server’” for root spans generated from zenazn/goji.v1
Sets tag "'component':'zenazn/goji.v1'" for all spans generated from zenazn/goji.v1
Modifies tests to check spans for newly added tags
Passes modified test

Changes import order according to golinter

…and labstack/echo.v4

Determines 'span.kind' value for labstack/echo and labstack/echo.v4 is ‘server’
Sets tag "'span.kind’:’server’” for root spans generated from labstack/echo and labstack/echo.v4
Sets tag "'component’:’labstack/echo'" for all spans generated from labstack/echo
Sets tag "'component’:’labstack/echo.v4’” for all spans generated from labstack/echo.v4
Modifies tests to check spans for newly added tags
Passes modified test

…sul and hashicorp/vault

Determines 'span.kind' value for hashicorp/consul and hashicorp/vault is ‘client’
Sets tag "'span.kind’:’client’” for root spans generated from hashicorp/consul and hashicorp/vault
Sets tag "'component’:’hashicorp/consul’” for all spans generated from hashicorp/consul
Sets tag "'component’:’hashicorp/vault’” for all spans generated from hashicorp/vault
Modifies tests to check spans for newly added tags
Passes modified and integration tests

…/twirp

Determines 'span.kind' value for twitchtv/twirp is ‘client’ or ‘server’
Sets tag "'span.kind’:’client’” for root client spans generated from twitchtv/twirp
Sets tag "'span.kind’:’server’” for root server spans generated from twitchtv/twirp
Sets tag "'component’:’twirp’” for all spans generated from twitchtv/twirp
Modifies tests to check spans for newly added tags
Passes modified tests

…go, grace-go.v12, google-api-go-client

Determines 'span.kind' value for grpc-go is server or client
Determines 'span.kind' value for grpc-go.v12 is server or client
Determines 'span.kind' value for google-api-go-client is client

Sets tag "'span.kind’:’client’” for root client spans generated from grpc-go
Sets tag "'span.kind’:’server’” for root server spans generated from grpc-go
Sets tag "'span.kind’:’client’” for root client spans generated from grpc-go.v12
Sets tag "'span.kind’:’server’” for root server spans generated from grpc-go.v12
Sets tag "'span.kind’:’client’” for root client spans generated from google-api-go-client

Sets tag "'component’:’grpc-go’” for all spans generated from grpc-go
Sets tag "'component’:’grpc-go.v12’” for all spans generated from grpc-go.v12
Sets tag "'component’:’google-api-go-client’” for all spans generated from google-api-go-client

Modifies tests to check spans for newly added tags
Passes modified tests

Changes to include system tests for general tags

Changes system.pid to process_id and from string to numeric
Changes logic to set language to be set for all spans except spankind client or producer
Updates tests to reflect changes
Passes modified tests

Removes logic of not setting language on spankind client or producer spans
Sets langauge on all spans

…e/redigo

Determines span.kind tag for gomodule/redigo as ‘client’
Sets tag “’span.kind’:’client’” for all root spans generated from gomodule/redigo
Sets tag "'component’:’gomodule/redigo’” for all spans generated from gomodule/redigo
Modifies tests to check spans for newly added tags
Passes modified test and integration tests

Updates README.md to include specifications for obligatory 'span.kind' and 'component' tags

Updates all 'component' values to be set to full path of integration package starting after contrib/
Runs all tests and passes them