diff --git a/.gitignore b/.gitignore index 11b90db..f18156f 100644 --- a/.gitignore +++ b/.gitignore @@ -24,3 +24,4 @@ _testmain.go *.prof .idea +vendor diff --git a/README.md b/README.md index a36416f..be39a05 100644 --- a/README.md +++ b/README.md @@ -98,5 +98,8 @@ Producer digesting JSON V2 Spans. The reporter uses the [Sarama async producer](https://godoc.org/github.com/Shopify/sarama#AsyncProducer) underneath. +#### GCP Pubsub Reporter +Reporter transporting Spans to the Zipkin server using a Pubsub. + ## usage and examples [HTTP Server Example](example_httpserver_test.go) diff --git a/go.mod b/go.mod index ed37c1c..0788229 100644 --- a/go.mod +++ b/go.mod @@ -1,25 +1,31 @@ module github.com/openzipkin/zipkin-go require ( + cloud.google.com/go v0.38.0 github.com/Shopify/sarama v1.19.0 github.com/Shopify/toxiproxy v2.1.4+incompatible // indirect github.com/davecgh/go-spew v1.1.1 // indirect github.com/eapache/go-resiliency v1.1.0 // indirect github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21 // indirect github.com/eapache/queue v1.1.0 // indirect + github.com/envoyproxy/go-control-plane v0.6.9 // indirect + github.com/gogo/googleapis v1.1.0 // indirect github.com/gogo/protobuf v1.2.0 - github.com/golang/protobuf v1.2.0 + github.com/golang/protobuf v1.3.1 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db // indirect + github.com/googleapis/gax-go v2.0.2+incompatible // indirect github.com/gorilla/context v1.1.1 // indirect github.com/gorilla/mux v1.6.2 + github.com/lyft/protoc-gen-validate v0.0.13 // indirect github.com/onsi/ginkgo v1.7.0 github.com/onsi/gomega v1.4.3 github.com/pierrec/lz4 v1.0.2-0.20190131084431-473cd7ce01a1 // indirect github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a // indirect github.com/streadway/amqp v0.0.0-20190404075320-75d898a42a94 - golang.org/x/net v0.0.0-20190311183353-d8887717615a - golang.org/x/sync v0.0.0-20181108010431-42b317875d0f // indirect - google.golang.org/grpc v1.20.0 + go.opencensus.io v0.22.0 // indirect + golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c + google.golang.org/api v0.7.0 // indirect + google.golang.org/grpc v1.20.1 ) go 1.12 diff --git a/go.sum b/go.sum index 5274bc9..5a7f514 100644 --- a/go.sum +++ b/go.sum @@ -1,4 +1,8 @@ +cloud.google.com/go v0.26.0 h1:e0WKqKTd5BnrG8aKH3J3h+QvEIQtSUcf2n5UZ5ZgLtQ= cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.38.0 h1:ROfEUZz+Gh5pa62DJWXSaonyu3StP6EA6lPEXPI6mCo= +cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/Shopify/sarama v1.19.0 h1:9oksLxC6uxVPHPVYUmq6xhr1BOF/hHobWH2UzO67z1s= github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo= @@ -22,16 +26,32 @@ github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7a github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58= github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= +github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM= 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/golang/snappy v0.0.0-20180518054509-2e65f85255db h1:woRePGFeVFfLKN/pOkfl+p/TAqKOfFu+7KPlMVpok/w= github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q= +github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ= +github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= +github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs= +github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc= +github.com/googleapis/gax-go v2.0.2+incompatible h1:silFMLAnr330+NRuag/VjIGF7TLp/LBrV2CJKFLWEww= +github.com/googleapis/gax-go v2.0.2+incompatible/go.mod h1:SFVmujtThgffbyetf+mdk2eWhX2bMyUtNHzFKcPA9HY= +github.com/googleapis/gax-go/v2 v2.0.4 h1:hU4mGcQI4DaAYW+IbTun+2qEZVFxK0ySjQLTbS0VQKc= +github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg= github.com/gorilla/context v1.1.1 h1:AWwleXJkX/nhcU9bZSnZoi3h/qGYqQAGhq6zZe/aQW8= github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg= github.com/gorilla/mux v1.6.2 h1:Pgr17XVTNXAk3q/r4CpKzC5xBM/qW1uVLV+IhRZpIIk= github.com/gorilla/mux v1.6.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs= +github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8= +github.com/hashicorp/golang-lru v0.5.1 h1:0hERBMJE1eitiLkihrMvRVBYAkpHzc/J3QdDN+dAcgU= +github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8= github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI= github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU= +github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU= github.com/lyft/protoc-gen-validate v0.0.13/go.mod h1:XbGvPuh87YZc5TdIa2/I4pLk0QoUACkjt2znoq26NVQ= github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE= github.com/onsi/ginkgo v1.7.0 h1:WSHQ+IS43OoUrWtD1/bbclrwK8TTH5hzp+umCiuxHgs= @@ -45,26 +65,75 @@ github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a h1:9ZKAASQSHhD github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4= github.com/streadway/amqp v0.0.0-20190404075320-75d898a42a94 h1:0ngsPmuP6XIjiFRNFYlvKwSr5zff2v+uPHaffZ6/M4k= github.com/streadway/amqp v0.0.0-20190404075320-75d898a42a94/go.mod h1:AZpEONHx3DKn8O/DFsRAY58/XVQiIPMTMB1SddzLXVw= +go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU= +go.opencensus.io v0.22.0 h1:C9hSCOW830chIVkdja34wa6Ky+IzWllkUinR+BtRZd4= +go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8= 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= +golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE= +golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU= +golang.org/x/lint v0.0.0-20190301231843-5614ed5bae6f/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE= golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc= +golang.org/x/lint v0.0.0-20190409202823-959b441ac422/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc= +golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20190311183353-d8887717615a h1:oWX7TPOiFAMXLq8o0ikBYfCJVlRHBcsciT5bXOrH628= golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= +golang.org/x/net v0.0.0-20190501004415-9ce7a6920f09/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= +golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c h1:uOCk1iQW6Vc18bnC13MfzScl+wdKBmM9Y9kU7Z83/lw= +golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= +golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw= +golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45 h1:SVwTIAaPC2U/AvvLNZ2a7OVsmBpC8L5BlwK1whH3hm0= +golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw= golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20181108010431-42b317875d0f h1:Bl/8QSvNqXvPGPGXa2z5xUTmV7VDcZyvRZ+QQXkXTZQ= 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/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sync v0.0.0-20190423024810-112230192c58 h1:8gQV6CLnAEikrhgkHFbMAEhagSSnXWGV915qUMm9mrU= +golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a h1:1BGLXjeY4akVXGgbC9HugT3Jv3hCI0z56oJR5vAMgBU= golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod 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h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= +google.golang.org/appengine v1.5.0 h1:KxkO13IPW4Lslp2bz+KHP2E3gtFlrIGNThxkZQ3g+4c= +google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 h1:Nw54tB0rB7hY/N0NQvRW8DG4Yk3Q6T9cu9RcFQDu1tc= google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= +google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= +google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= +google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= +google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873 h1:nfPFGzJkUDX6uBmpN/pSw7MbOAWegH5QDQuoXFHedLg= +google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= +google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c= google.golang.org/grpc v1.20.0 h1:DlsSIrgEBuZAUFJcta2B5i/lzeHHbnfkNFAfFXLVFYQ= google.golang.org/grpc v1.20.0/go.mod h1:chYK+tFQF0nDUGJgXMSgLCQk3phJEuONr2DCgLDdAQM= +google.golang.org/grpc v1.20.1 h1:Hz2g2wirWK7H0qIIhGIqRGTuMwTE8HEKFnDZZ7lm9NU= +google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4= @@ -74,3 +143,5 @@ gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWD gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE= gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/reporter/gcppubsub/pubsub.go b/reporter/gcppubsub/pubsub.go new file mode 100644 index 0000000..659c5c5 --- /dev/null +++ b/reporter/gcppubsub/pubsub.go @@ -0,0 +1,110 @@ +package gcppubsub + +import ( + "cloud.google.com/go/pubsub" + "context" + "encoding/json" + "errors" + "github.com/openzipkin/zipkin-go/model" + "github.com/openzipkin/zipkin-go/reporter" + "log" + "os" +) + +const defaultPubSubTopic = "defaultTopic" + +var resultMsg = make(chan reporterResult) + +// Reporter implements Reporter by publishing spans to a GCP gcppubsub. +type Reporter struct { + logger *log.Logger + topic *pubsub.Topic + client *pubsub.Client +} + +type reporterResult struct { + ctx context.Context + result pubsub.PublishResult +} + +// ReporterOption sets a parameter for the reporter +type ReporterOption func(c *Reporter) + +// Send send span to topic +func (r *Reporter) Send(s model.SpanModel) { + // Zipkin expects the message to be wrapped in an array + ss := []model.SpanModel{s} + m, err := json.Marshal(ss) + if err != nil { + r.logger.Printf("failed when marshalling the span: %s\n", err.Error()) + return + } + r.publish(m) +} + +// Close releases any resources held by the client (pubsub client publisher and subscriber connections). +func (r *Reporter) Close() error { + close(resultMsg) + return r.client.Close() +} + +// Logger sets the logger used to report errors in the collection +// process. +func Logger(logger *log.Logger) ReporterOption { + return func(c *Reporter) { + c.logger = logger + } +} + +// Client sets the client used to produce to gcppubsub. +func Client(client *pubsub.Client) ReporterOption { + return func(c *Reporter) { + c.client = client + } +} + +// Topic sets the gcppubsub topic to attach the reporter producer on. +func Topic(t *pubsub.Topic) ReporterOption { + return func(c *Reporter) { + c.topic = t + } +} + +// NewReporter returns a new gcppubsub-backed Reporter. address should be a slice of +// TCP endpoints of the form "host:port". +func NewReporter(options ...ReporterOption) (reporter.Reporter, error) { + r := &Reporter{ + logger: log.New(os.Stderr, "", log.LstdFlags), + } + + for _, option := range options { + option(r) + } + + if r.client == nil { + return nil, errors.New("cannot create pubsub reporter without valid client") + } + if r.topic == nil { + r.topic = r.client.Topic(defaultPubSubTopic) + } + go r.checkResult() + return r, nil +} + +func (r *Reporter) publish(msg []byte) { + ctx := context.Background() + + result := r.topic.Publish(ctx, &pubsub.Message{ + Data: msg, + }) + resultMsg <- reporterResult{ctx, *result} +} + +func (r *Reporter) checkResult() { + for n := range resultMsg { + _, err := n.result.Get(n.ctx) + if err != nil { + r.logger.Printf("Error sending message: %s\n", err.Error()) + } + } +} diff --git a/reporter/gcppubsub/pubsub_test.go b/reporter/gcppubsub/pubsub_test.go new file mode 100644 index 0000000..21f6981 --- /dev/null +++ b/reporter/gcppubsub/pubsub_test.go @@ -0,0 +1,150 @@ +package gcppubsub + +import ( + "errors" + "log" + "os" + "testing" + "time" + + "cloud.google.com/go/pubsub" + "github.com/openzipkin/zipkin-go/model" + "github.com/openzipkin/zipkin-go/reporter" +) + +var topicID string + +func TestPublish(t *testing.T) { + tcs := map[string]struct { + topicID string + }{ + "with test-topic": { + topicID: "test-topic", + }, + "with default topic": { + topicID: defaultPubSubTopic, + }, + } + + for n, tc := range tcs { + t.Run(n, func(t *testing.T) { + c := &pubsub.Client{} + top := c.Topic(tc.topicID) + reporter, err := newStubReporter(Client(c), Topic(top)) + if err != nil { + t.Fatalf("failed creating reporter: %v", err) + } + span := makeNewSpan("avg1", 124, 457, 0, true) + reporter.Send(*span) + }) + } +} + +func TestErrorNotProjEnv(t *testing.T) { + reporter, err := NewReporter() + if reporter != nil { + t.Fatal("Reporter should be null when initiated without client") + } + if err == nil { + t.Fatal("NewReporter should return an error when initiated without client") + } + if err.Error() != "cannot create pubsub reporter without valid client" { + t.Fatal("NewReporter should return cannot create pubsub reporter without valid client error") + } +} + +func TestClose(t *testing.T) { + tcs := map[string]struct { + willFail bool + }{ + "will success": {true}, + "will fail": {false}, + } + + for n, tc := range tcs { + t.Run(n, func(t *testing.T) { + reporter, err := newStubReporter() + if err != nil { + t.Fatalf("failed creating reporter: %v", err) + } + if err := reporter.Close(); err != nil && tc.willFail { + t.Fatalf("failed to close reporter: %v", err) + } + }) + } +} + +func makeNewSpan(methodName string, traceID, spanID, parentSpanID uint64, debug bool) *model.SpanModel { + timestamp := time.Now() + var parentID = new(model.ID) + if parentSpanID != 0 { + *parentID = model.ID(parentSpanID) + } + + return &model.SpanModel{ + SpanContext: model.SpanContext{ + TraceID: model.TraceID{Low: traceID}, + ID: model.ID(spanID), + ParentID: parentID, + Debug: debug, + }, + Name: methodName, + Timestamp: timestamp, + } +} + +func TestLogger(t *testing.T) { + tcs := map[string]struct { + logger *log.Logger + }{ + "with no logger": { + logger: nil, + }, + "with default logger": { + logger: log.New(nil, "", 0), + }, + } + + for n, tc := range tcs { + t.Run(n, func(t *testing.T) { + c := &pubsub.Client{} + _, err := newStubReporter(Client(c), Logger(tc.logger)) + if err != nil { + t.Fatalf("failed creating reporter with logger: %v", err) + } + }) + } +} + +type stubReporter struct { + logger *log.Logger + client *stubClient + topic *pubsub.Topic +} + +type stubClient struct{} + +func (c *stubClient) Topic(name string) *pubsub.Topic { + return &pubsub.Topic{} +} + +func (r *stubReporter) Send(span model.SpanModel) {} + +func (r *stubReporter) Close() error { + return nil +} + +func newStubReporter(...ReporterOption) (reporter.Reporter, error) { + r := &stubReporter{ + logger: log.New(os.Stderr, "", log.LstdFlags), + client: &stubClient{}, + } + + if r.client == nil { + return nil, errors.New("cannot create pubsub reporter without valid client") + } + if r.topic == nil { + r.topic = r.client.Topic(defaultPubSubTopic) + } + return r, nil +}