chore: profiling via Dagger

.gitignore

@@ -43,3 +43,4 @@ Brewfile.lock.json
 .build/
 examples/cockroachdb/data
 playwright-report/
+build/hack/out/

build/README.md

@@ -73,3 +73,25 @@ These tests exercise the Flipt Go SDK against a matrix of Flipt configurations.
 ### CLI Tests
 
 `mage test:cli` runs a suite of [CLI tests](./testing/cli.go) invoking the `flipt` binary and its subcommands.
+
+## Hack
+
+The `hack` namespace within the Mage targets can be used to run various tasks that are under active development.
+
+```sh
+  hack:loadTest       runs a load test against a running instance of Flipt using Pyroscope and vegeta.
+```
+
+### Load Test
+
+`mage hack:loadTest` runs a load test against a running instance of Flipt using [Pyroscope](https://pyroscope.io) and vegeta.
+
+The test will import data from [testdata/default.yaml](testing/integration/readonly/testdata/default.yaml) into Flipt and then run a series of evaluation requests against a running instance of Flipt for a period of 60 seconds.
+
+After running this command, the results will be available in the `./build/hack/out/profiles` directory.
+
+You can view the results using the Pyroscope UI by running `pyroscope server --adhoc-data-path="$(pwd)/hack/out/profiles"`. 
+
+This will start the Pyroscope server on `http://localhost:4040`. 
+
+**Note:** You will need to have Pyroscope installed locally to run this command (See [Pyroscope Quick Start](https://pyroscope.io/docs/server-install-macos/)). (TODO: run this in a container)

build/go.mod

@@ -33,6 +33,7 @@ require (
 	github.com/acomagu/bufpipe v1.0.4 // indirect
 	github.com/adrg/xdg v0.4.0 // indirect
 	github.com/alessio/shellescape v1.4.1 // indirect
+	github.com/c2h5oh/datasize v0.0.0-20220606134207-859f65c6625b // indirect
 	github.com/cloudflare/circl v1.3.3 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/docker/distribution v2.8.2+incompatible // indirect
@@ -53,9 +54,12 @@ require (
 	github.com/iancoleman/strcase v0.2.0 // indirect
 	github.com/imdario/mergo v0.3.13 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/influxdata/tdigest v0.0.1 // indirect
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
 	github.com/kevinburke/ssh_config v1.2.0 // indirect
 	github.com/kr/pretty v0.3.1 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/matryer/is v1.4.0 // indirect
 	github.com/mattn/go-isatty v0.0.17 // indirect
 	github.com/moby/term v0.0.0-20221205130635-1aeaba878587 // indirect
@@ -70,6 +74,8 @@ require (
 	github.com/skeema/knownhosts v1.1.0 // indirect
 	github.com/spf13/cobra v1.7.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/tsenart/go-tsz v0.0.0-20180814235614-0bd30b3df1c3 // indirect
+	github.com/tsenart/vegeta v12.7.0+incompatible // indirect
 	github.com/vektah/gqlparser/v2 v2.5.1 // indirect
 	github.com/xanzy/ssh-agent v0.3.3 // indirect
 	golang.org/x/crypto v0.11.0 // indirect
@@ -78,6 +84,10 @@ require (
 	golang.org/x/sys v0.10.0 // indirect
 	golang.org/x/term v0.10.0 // indirect
 	golang.org/x/text v0.11.0 // indirect
+	golang.org/x/crypto v0.11.0 // indirect
+	golang.org/x/net v0.12.0 // indirect
+	golang.org/x/sys v0.10.0 // indirect
+	golang.org/x/text v0.11.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
 	golang.org/x/tools v0.9.1 // indirect
 	google.golang.org/appengine v1.6.7 // indirect

build/go.sum

@@ -25,17 +25,23 @@ github.com/adrg/xdg v0.4.0 h1:RzRqFcjH4nE5C6oTAxhBtoE2IRyjBSa62SCbyPidvls=
 github.com/adrg/xdg v0.4.0/go.mod h1:N6ag73EX4wyxeaoeHctc1mas01KZgsj5tYiAIwqJE/E=
 github.com/agnivade/levenshtein v1.0.1/go.mod h1:CURSv5d9Uaml+FovSIICkLbAUZ9S4RqaHDIsdSBg7lM=
 github.com/agnivade/levenshtein v1.1.1 h1:QY8M92nrzkmr798gCo3kmMyqXFzdQVpxLlGPRBij0P8=
+github.com/agnivade/levenshtein v1.1.1/go.mod h1:veldBMzWxcCG2ZvUTKD2kJNRdCk5hVbJomOvKkmgYbo=
 github.com/alessio/shellescape v1.4.1 h1:V7yhSDDn8LP4lc4jS8pFkt0zCnzVJlG5JXy9BVKJUX0=
 github.com/alessio/shellescape v1.4.1/go.mod h1:PZAiSCk0LJaZkiCSkPv8qIobYglO3FPpyFjDCtHLS30=
+github.com/alexflint/go-arg v1.4.2/go.mod h1:9iRbDxne7LcR/GSvEr7ma++GLpdIU1zrghf2y2768kM=
+github.com/alexflint/go-scalar v1.0.0/go.mod h1:GpHzbCOZXEKMEcygYQ5n/aa4Aq84zbxjy3MxYW0gjYw=
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883 h1:bvNMNQO63//z+xNgfBlViaCIJKLlCJ6/fmUseuG0wVQ=
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be h1:9AeTilPcZAjCFIImctFaOjnTIavg87rW78vTPkQqLI8=
 github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be/go.mod h1:ySMOLuWl6zY27l47sB3qLNK6tF2fkHG55UZxx8oIVo4=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5 h1:0CwZNZbxp69SHPdPJAN/hZIm0C4OItdklCFmMRWYpio=
 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5/go.mod h1:wHh0iHkYZB8zMSxRWpUBQtwG5a7fFgvEO+odwuTv2gs=
+github.com/bradleyjkemp/cupaloy/v2 v2.6.0/go.mod h1:bm7JXdkRd4BHJk9HpwqAI8BoAY1lps46Enkdqw6aRX0=
 github.com/bwesterb/go-ristretto v1.2.0/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7NFEuV9ekS419A0=
 github.com/bwesterb/go-ristretto v1.2.3/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7NFEuV9ekS419A0=
+github.com/c2h5oh/datasize v0.0.0-20220606134207-859f65c6625b h1:6+ZFm0flnudZzdSE0JxlhR2hKnGPcNB35BjQf4RYQDY=
+github.com/c2h5oh/datasize v0.0.0-20220606134207-859f65c6625b/go.mod h1:S/7n9copUssQ56c7aAgHqftWO4LTf4xY6CGWt8Bc+3M=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cloudflare/circl v1.1.0/go.mod h1:prBCrKB9DV4poKZY1l9zBXg2QJY7mvgRvtMxxK7fi4I=
@@ -123,10 +129,14 @@ github.com/imdario/mergo v0.3.13/go.mod h1:4lJ1jqUDcsbIECGy0RUJAXNIhg+6ocWgb1ALK
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/influxdata/tdigest v0.0.1 h1:XpFptwYmnEKUqmkcDjrzffswZ3nvNeevbUSLPP/ZzIY=
+github.com/influxdata/tdigest v0.0.1/go.mod h1:Z0kXnxzbTC2qrx4NaIzYkE1k66+6oEDQTvL95hQFh5Y=
 github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 h1:BQSFePA1RWJOlocH6Fxy8MmwDt+yVQYULKfN0RoTN8A=
 github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99/go.mod h1:1lJo3i6rXxKeerYnT8Nvf0QmHCRC1n8sfWVwXF2Frvo=
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jessevdk/go-flags v1.5.0/go.mod h1:Fw0T6WPc1dYxT4mKEZRfG5kJhaTDP9pj1c2EWnYs/m4=
+github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
+github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/kevinburke/ssh_config v1.2.0 h1:x584FjTGwHzMwvHx18PXxbBVzfnxogHaAReU4gf13a4=
 github.com/kevinburke/ssh_config v1.2.0/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
@@ -141,6 +151,8 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/magefile/mage v1.14.0 h1:6QDX3g6z1YvJ4olPhT1wksUcSa/V0a1B+pJb73fBjyo=
 github.com/magefile/mage v1.14.0/go.mod h1:z5UZb/iS3GoOSn0JgWuiw7dxlurVYTu+/jHXqQg881A=
+github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
+github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/matryer/is v1.2.0/go.mod h1:2fLPjFQM9rhQ15aVEtbuwhJinnOqrmgXPNdZsdwlWXA=
 github.com/matryer/is v1.4.0 h1:sosSmIWwkYITGrxZ25ULNDeKiMNzFSr4V/eqBQP0PeE=
 github.com/matryer/is v1.4.0/go.mod h1:8I/i5uYgLzgsgEloJE1U6xx5HkBQpAZvepWuujKwMRU=
@@ -175,6 +187,7 @@ github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncj
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sergi/go-diff v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
 github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
+github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0=
 github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
@@ -196,6 +209,10 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
 github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/tsenart/go-tsz v0.0.0-20180814235614-0bd30b3df1c3 h1:pcQGQzTwCg//7FgVywqge1sW9Yf8VMsMdG58MI5kd8s=
+github.com/tsenart/go-tsz v0.0.0-20180814235614-0bd30b3df1c3/go.mod h1:SWZznP1z5Ki7hDT2ioqiFKEse8K9tU2OUvaRI0NeGQo=
+github.com/tsenart/vegeta v12.7.0+incompatible h1:sGlrv11EMxQoKOlDuMWR23UdL90LE5VlhKw/6PWkZmU=
+github.com/tsenart/vegeta v12.7.0+incompatible/go.mod h1:Smz/ZWfhKRcyDDChZkG3CyTHdj87lHzio/HOCkbndXM=
 github.com/vektah/gqlparser/v2 v2.5.1 h1:ZGu+bquAY23jsxDRcYpWjttRZrUz07LbiY77gUOHcr4=
 github.com/vektah/gqlparser/v2 v2.5.1/go.mod h1:mPgqFBu/woKTVYWyNk8cO3kh4S/f4aRFZrvOnp3hmCs=
 github.com/xanzy/ssh-agent v0.3.3 h1:+/15pJfg/RsTxqYcX6fHqOXZwwMP+2VyYWJeWM2qQFM=
@@ -221,6 +238,8 @@ golang.org/x/crypto v0.7.0 h1:AvwMYaRytfdeVt3u6mLaxYtErKYjxA2OXjJ1HHq6t3A=
 golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
 golang.org/x/crypto v0.11.0 h1:6Ewdq3tDic1mg5xRO4milcWCfMVQhI4NkqWWvqejpuA=
 golang.org/x/crypto v0.11.0/go.mod h1:xgJhtzW8F9jGdVFWZESrid1U1bjeNy4zgy5cRr/CIio=
+golang.org/x/crypto v0.11.0/go.mod h1:xgJhtzW8F9jGdVFWZESrid1U1bjeNy4zgy5cRr/CIio=
+golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 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=
@@ -301,6 +320,7 @@ golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
 golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.10.0 h1:SqMFp9UcQJZa+pmYuAKjd9xq1f0j5rLcDIk0mj4qAsA=
 golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.0.0-20220722155259-a9ba230a4035/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
@@ -325,6 +345,7 @@ golang.org/x/text v0.11.0 h1:LAntKIrcmeSKERyiOh0XMV39LXS8IE9UL2yP7+f5ij4=
 golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
 golang.org/x/time v0.3.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/tools v0.0.0-20180525024113-a5b4c53f6e8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
@@ -344,6 +365,8 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gonum.org/v1/gonum v0.0.0-20181121035319-3f7ecaa7e8ca/go.mod h1:Y+Yx5eoAFn32cQvJDxZx5Dpnq+c3wtXuadVZAcxbbBo=
+gonum.org/v1/netlib v0.0.0-20181029234149-ec6d1f5cefe6/go.mod h1:wa6Ws7BG/ESfp6dHfk7C6KdzKA7wR7u/rKwOGE66zvw=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.6.7 h1:FZR1q0exgwxzPzp/aF+VccGrSfxfPpkBqjIIEq3ru6c=

build/hack/cmd/loadtest/main.go

@@ -0,0 +1,92 @@
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/gofrs/uuid"
+	vegeta "github.com/tsenart/vegeta/lib"
+)
+
+const (
+	postMethod = "POST"
+)
+
+type Evaluation struct {
+	EntityId string            `json:"entityId"`
+	FlagKey  string            `json:"flagKey"`
+	Context  map[string]string `json:"context"`
+}
+
+type BooleanRollout struct {
+	EntityId string            `json:"entityId"`
+	FlagKey  string            `json:"flagKey"`
+	Context  map[string]string `json:"context"`
+}
+
+var (
+	dur       time.Duration
+	fliptAddr string
+)
+
+func init() {
+	flag.DurationVar(&dur, "duration", 120*time.Second, "duration of load test for evaluations")
+	flag.StringVar(&fliptAddr, "flipt-addr", "http://flipt:8080", "address of the flipt instance")
+}
+
+func run() error {
+	flag.Parse()
+
+	evaluationTargets := make([]vegeta.Target, 0, 2)
+
+	variantEvaluation := Evaluation{
+		EntityId: uuid.Must(uuid.NewV4()).String(),
+		FlagKey:  "flag_010",
+	}
+
+	ve, _ := json.Marshal(variantEvaluation)
+
+	evaluationTargets = append(evaluationTargets, vegeta.Target{
+		Method: postMethod,
+		URL:    fmt.Sprintf("%s/api/v1/evaluate", fliptAddr),
+		Body:   ve,
+	})
+
+	booleanEvaluation := BooleanRollout{
+		EntityId: uuid.Must(uuid.NewV4()).String(),
+		FlagKey:  "flag_boolean",
+	}
+
+	be, _ := json.Marshal(booleanEvaluation)
+
+	evaluationTargets = append(evaluationTargets, vegeta.Target{
+		Method: postMethod,
+		URL:    fmt.Sprintf("%s/evaluate/v1/boolean", fliptAddr),
+		Body:   be,
+	})
+
+	evaluationTargeter := vegeta.NewStaticTargeter(evaluationTargets...)
+
+	// TODO: make configurable
+	rate := vegeta.Rate{Freq: 100, Per: time.Second}
+
+	var metrics vegeta.Metrics
+
+	fmt.Printf("About to start vegeta attack on evalutions for %f seconds...\n", dur.Seconds())
+	attacker := vegeta.NewAttacker()
+	for res := range attacker.Attack(evaluationTargeter, rate, dur, "Doing evaluation request...") {
+		metrics.Add(res)
+	}
+	metrics.Close()
+
+	return nil
+}
+
+func main() {
+	if err := run(); err != nil {
+		log.Fatal(err)
+	}
+}

build/hack/loadtest.go

@@ -0,0 +1,46 @@
+package hack
+
+import (
+	"context"
+
+	"dagger.io/dagger"
+	"github.com/google/uuid"
+)
+
+func LoadTest(ctx context.Context, client *dagger.Client, base, flipt *dagger.Container) error {
+	seed := base.File("build/testing/integration/readonly/testdata/default.yaml")
+	importCmd := []string{"/flipt", "import", "--create-namespace", "import.yaml"}
+
+	// import some test data
+	flipt, err := flipt.WithEnvVariable("UNIQUE", uuid.New().String()).
+		WithFile("import.yaml", seed).
+		WithExec(importCmd).
+		Sync(ctx)
+
+	if err != nil {
+		return err
+	}
+
+	flipt = flipt.WithEnvVariable("UNIQUE", uuid.New().String()).
+		WithExposedPort(8080).
+		WithExec(nil)
+
+	// build the loadtest binary
+	loadtest := base.
+		WithWorkdir("build/hack").
+		WithExec([]string{"go", "build", "-o", "./out/loadtest", "./cmd/loadtest/..."}).
+		File("out/loadtest")
+
+	// run the loadtest binary from within the pyroscope container and export the adhoc data
+	// output to the host
+	_, err = client.Container().
+		From("pyroscope/pyroscope:latest").
+		WithFile("loadtest", loadtest).
+		WithServiceBinding("flipt", flipt).
+		WithFile("loadtest", client.Host().Directory("build/hack/out").File("loadtest")).
+		WithExec([]string{"adhoc", "--log-level", "debug", "--url", "flipt:8080", "./loadtest", "-duration", "60s"}).
+		Directory("/home/pyroscope/.local/share/pyroscope").
+		Export(ctx, "build/hack/out/profiles")
+
+	return err
+}

build/magefile.go

@@ -13,6 +13,7 @@ import (
 	"dagger.io/dagger"
 	"github.com/magefile/mage/mg"
 	"github.com/magefile/mage/sh"
+	"go.flipt.io/flipt/build/hack"
 	"go.flipt.io/flipt/build/internal"
 	"go.flipt.io/flipt/build/internal/publish"
 	"go.flipt.io/flipt/build/release"
@@ -172,6 +173,16 @@ func (r Release) Tag(ctx context.Context, module, version string) error {
 	return release.Tag(ctx, module, version)
 }
 
+// Hack contains all the targets we're still experimenting with
+type Hack mg.Namespace
+
+// LoadTest runs a load test against a running instance of Flipt using Pyroscope and vegeta.
+func (h Hack) LoadTest(ctx context.Context) error {
+	return daggerBuild(ctx, func(client *dagger.Client, req internal.FliptRequest, base, flipt *dagger.Container) error {
+		return hack.LoadTest(ctx, client, base, flipt)
+	})
+}
+
 func daggerBuild(ctx context.Context, fn func(client *dagger.Client, req internal.FliptRequest, base, flipt *dagger.Container) error) error {
 	return daggerRun(ctx, func(client *dagger.Client, req internal.FliptRequest) error {
 		base, err := internal.Base(ctx, client, req)

build/release/release.go

@@ -79,7 +79,7 @@ func next(current string, vp VersionPart) (string, error) {
 
 	if vp == RC {
 		if pre != "" && !strings.HasPrefix(pre, "-rc") {
-			return "", fmt.Errorf("Unexpected existing prerelease on latest: %q", current)
+			return "", fmt.Errorf("unexpected existing prerelease on latest: %q", current)
 		}
 
 		if strings.HasPrefix(pre, "-rc") {
@@ -262,7 +262,7 @@ func chdirRoot() func() {
 
 func moduleTagPrefix(module string) (prefix string, _ error) {
 	if !strings.HasPrefix(module, rootModule) {
-		return "", fmt.Errorf("Expected module %q to be prefixed with %q", module, rootModule)
+		return "", fmt.Errorf("expected module %q to be prefixed with %q", module, rootModule)
 	}
 
 	prefix = module[len(rootModule):]