From 05d1842c95ef1e3ac34070988c926b26c1cbf378 Mon Sep 17 00:00:00 2001 From: Mya Pitzeruse Date: Fri, 3 Jun 2022 14:39:22 -0500 Subject: [PATCH] feat: minimal proof of concept --- .gitignore | 25 ++ .goreleaser.yaml | 29 ++ AUTHORS | 11 + LICENSE | 663 +++++++++++++++++++++++++++++++++ Makefile | 63 ++++ README.md | 51 +++ cmd/pages/Dockerfile | 29 ++ cmd/pages/docker-compose.yaml | 15 + cmd/pages/main.go | 88 +++++ go.mod | 54 +++ go.sum | 674 ++++++++++++++++++++++++++++++++++ internal/commands/host.go | 101 +++++ internal/commands/version.go | 37 ++ internal/git/billy_http.go | 80 ++++ internal/git/service.go | 110 ++++++ internal/lock/lock.go | 48 +++ internal/metrics/metrics.go | 38 ++ internal/middleware.go | 128 +++++++ internal/server.go | 136 +++++++ legal/header.txt | 15 + package.json | 5 + scripts/dist-go.sh | 37 ++ 22 files changed, 2437 insertions(+) create mode 100644 .gitignore create mode 100644 .goreleaser.yaml create mode 100644 AUTHORS create mode 100644 LICENSE create mode 100644 Makefile create mode 100644 README.md create mode 100644 cmd/pages/Dockerfile create mode 100644 cmd/pages/docker-compose.yaml create mode 100644 cmd/pages/main.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 internal/commands/host.go create mode 100644 internal/commands/version.go create mode 100644 internal/git/billy_http.go create mode 100644 internal/git/service.go create mode 100644 internal/lock/lock.go create mode 100644 internal/metrics/metrics.go create mode 100644 internal/middleware.go create mode 100644 internal/server.go create mode 100644 legal/header.txt create mode 100644 package.json create mode 100644 scripts/dist-go.sh diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..6936877 --- /dev/null +++ b/.gitignore @@ -0,0 +1,25 @@ +# If you prefer the allow list template instead of the deny list, see community template: +# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore +# +# Binaries for programs and plugins +*.exe +*.exe~ +*.dll +*.so +*.dylib + +# Test binary, built with `go test -c` +*.test + +# Output of the go coverage tool, specifically when used with LiteIDE +*.out + +# Dependency directories (remove the comment below to include it) +# vendor/ + +# Go workspace file +go.work + +dist/ + +pages diff --git a/.goreleaser.yaml b/.goreleaser.yaml new file mode 100644 index 0000000..f7547f4 --- /dev/null +++ b/.goreleaser.yaml @@ -0,0 +1,29 @@ +project_name: pages + +snapshot: + name_template: "{{ .ShortCommit }}" + +builds: + - id: pages + main: ./cmd/pages/main.go + binary: pages + env: + - CGO_ENABLED=0 + goos: + - darwin + - linux + goarch: + - amd64 + - arm64 + goamd64: [] + +archives: + - id: pages + name_template: "pages_{{ .Os }}_{{ .Arch }}" + +checksum: + name_template: 'pages_checksums.txt' + +release: + header: "" + footer: "" diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..d590c28 --- /dev/null +++ b/AUTHORS @@ -0,0 +1,11 @@ +# This is the list of pages significant contributors. +# +# This does not necessarily list everyone who has contributed code, +# especially since many employees of one corporation may be contributing. +# To see the full list of contributors, see the revision history in +# source control. +# +# Format: +# name +# +Mya Pitzeruse diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..d7b8614 --- /dev/null +++ b/LICENSE @@ -0,0 +1,663 @@ + GNU AFFERO GENERAL PUBLIC LICENSE + Version 3, 19 November 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU Affero General Public License is a free, copyleft license for +software and other kinds of works, specifically designed to ensure +cooperation with the community in the case of network server software. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + + Copyright (C) {{ year }} {{ organization }} + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If your software can interact with users remotely through a computer +network, you should also make sure that it provides a way for users to +get its source. For example, if your program is a web application, its +interface could display a "Source" link that leads users to an archive +of the code. There are many ways you could offer source, and different +solutions will be better for different programs; see section 13 for the +specific requirements. + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU AGPL, see +. + diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..ebdff6a --- /dev/null +++ b/Makefile @@ -0,0 +1,63 @@ +CWD = $(shell pwd) +SKAFFOLD_DEFAULT_REPO ?= img.pitz.tech/mya +VERSION ?= latest + +define HELP_TEXT +Welcome to pages! + +Targets: + help provides help text + test run tests + docker rebuild the pages docker container + docker/release releases pages + legal prepends legal header to source code + dist recompiles pages binaries + +endef +export HELP_TEXT + +help: + @echo "$$HELP_TEXT" + +docker: .docker +.docker: + docker build . \ + --tag $(SKAFFOLD_DEFAULT_REPO)/pages:latest \ + --tag $(SKAFFOLD_DEFAULT_REPO)/pages:$(VERSION) \ + --file ./cmd/pages/Dockerfile + +docker/release: + docker buildx build . \ + --platform linux/amd64,linux/arm64 \ + --label "org.opencontainers.image.source=https://github.com/mjpitz/pages" \ + --label "org.opencontainers.image.version=$(VERSION)" \ + --label "org.opencontainers.image.licenses=agpl3" \ + --label "org.opencontainers.image.title=pages" \ + --label "org.opencontainers.image.description=" \ + --tag $(SKAFFOLD_DEFAULT_REPO)/pages:latest \ + --tag $(SKAFFOLD_DEFAULT_REPO)/pages:$(VERSION) \ + --file ./cmd/pages/Dockerfile \ + --push + +# actual targets + +test: + go test -v -race -coverprofile=.coverprofile -covermode=atomic ./... + +legal: .legal +.legal: + addlicense -f ./legal/header.txt -skip yaml -skip yml . + +dist: .dist +.dist: + sh ./scripts/dist-go.sh + +# useful shortcuts for release + +tag/release: + npm version "$(shell date +%y.%m.0)" + git push --follow-tags + +tag/patch: + npm version patch + git push --follow-tags diff --git a/README.md b/README.md new file mode 100644 index 0000000..233f4b6 --- /dev/null +++ b/README.md @@ -0,0 +1,51 @@ +# pages + +`pages` provides web application / static site hosting with built-in support for simple analytics via [Prometheus][] and +[Grafana][]. + +[Prometheus]: https://prometheus.io +[Grafana]: https://grafana.com + +**Motivation** + +As I work to reduce the number of Google services from my life, I found myself wanting a simpler alternative to my +current hosting solution. Right now, my hosting is provided by GitHub pages and my analytics is provided by Google (as +one did in th 2010s). But as we start to enforce more privacy rights through systems like GDPR, I find myself wanting a +simpler solution that doesn't require cookie disclosures. + +## Quickstart with Docker + +The easiest way to get started is with Docker. Your web content will be exposed on port `8080` while [metrics](#metrics) +will be available on `8081`. + +```shell +docker run --rm -it \ + -e PAGES_GIT_URL= \ + -e PAGES_GIT_BRANCH=gh-pages \ + -p 8080:8080 \ + -p 8081:8081 \ + img.pitz.tech/mya/pages +``` + +**Syncing the git repository** + +You can instruct the server to reload the Git branch by curling this `/_admin/sync` endpoint. + +```shell +curl -X POST http://localhost:8080/_admin/sync +``` + +This endpoint is exposed publicly so your CI solution can issue the command to cause the servers to update. + +## Metrics + +All metrics are prefixed with the `pages` namespace. This makes it easy to narrow down to the specific metrics for the +system. + +### pages_page_view_count + +```text +# HELP pages_page_view_count page views +# TYPE pages_page_view_count counter +pages_page_view_count{country="",path="/charts/",referrer="http://localhost:8080/blog/"} 1 +``` diff --git a/cmd/pages/Dockerfile b/cmd/pages/Dockerfile new file mode 100644 index 0000000..6cdc572 --- /dev/null +++ b/cmd/pages/Dockerfile @@ -0,0 +1,29 @@ +# Copyright (C) 2022 The pages authors +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU Affero General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Affero General Public License for more details. +# +# You should have received a copy of the GNU Affero General Public License +# along with this program. If not, see . +# + +FROM alpine:3.12 + +WORKDIR /opt/pages +RUN apk add -U tzdata ca-certificates gzip + +ARG TARGETOS +ARG TARGETARCH +COPY dist/pages_${TARGETOS}_${TARGETARCH}.tar.gz /opt/pages/bin/pages.tar.gz +RUN tar x -C bin -z -f bin/pages.tar.gz && \ + rm bin/pages.tar.gz && \ + mv bin/LICENSE LICENSE + +ENTRYPOINT [ "/opt/pages/bin/pages", "host" ] diff --git a/cmd/pages/docker-compose.yaml b/cmd/pages/docker-compose.yaml new file mode 100644 index 0000000..a3ce8b8 --- /dev/null +++ b/cmd/pages/docker-compose.yaml @@ -0,0 +1,15 @@ +version: "3.8" + +services: + pages: + container_name: pages + image: ${SKAFFOLD_DEFAULT_REPO:-img.pitz.tech/mya}/pages + restart: always + ports: + - "8080:8080" # public + - "8081:8081" # private + environment: + PAGES_LOG_LEVEL: info + PAGES_LOG_FORMAT: json + # PAGES_GIT_URL: https://github.com/mjpitz/mjpitz.git + # PAGES_GIT_BRANCH: gh-pages diff --git a/cmd/pages/main.go b/cmd/pages/main.go new file mode 100644 index 0000000..a23ef3c --- /dev/null +++ b/cmd/pages/main.go @@ -0,0 +1,88 @@ +// Copyright (C) 2022 The pages authors +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see . +// + +package main + +import ( + "fmt" + "os" + "runtime" + "strings" + "time" + + "github.com/urfave/cli/v2" + + "github.com/mjpitz/myago/flagset" + "github.com/mjpitz/myago/lifecycle" + "github.com/mjpitz/myago/zaputil" + "github.com/mjpitz/pages/internal/commands" +) + +var version = "" +var commit = "" +var date = time.Now().Format(time.RFC3339) + +type GlobalConfig struct { + Log zaputil.Config `json:"log"` +} + +func main() { + compiled, _ := time.Parse(time.RFC3339, date) + + cfg := &GlobalConfig{ + Log: zaputil.DefaultConfig(), + } + + app := &cli.App{ + Name: "pages", + Usage: "Provides hosting and anonymized prometheus metrics for front-end web applications", + UsageText: "pages [options] ", + Version: fmt.Sprintf("%s (%s)", version, commit), + Flags: flagset.ExtractPrefix("pages", cfg), + Commands: []*cli.Command{ + commands.Host, + commands.Version, + }, + Before: func(ctx *cli.Context) error { + ctx.Context = zaputil.Setup(ctx.Context, cfg.Log) + ctx.Context = lifecycle.Setup(ctx.Context) + + return nil + }, + After: func(ctx *cli.Context) error { + lifecycle.Resolve(ctx.Context) + lifecycle.Shutdown(ctx.Context) + + return nil + }, + Compiled: compiled, + Copyright: fmt.Sprintf("Copyright %d The pages authors - All Rights Reserved\n", compiled.Year()), + HideVersion: true, + HideHelpCommand: true, + EnableBashCompletion: true, + BashComplete: cli.DefaultAppComplete, + Metadata: map[string]interface{}{ + "arch": runtime.GOARCH, + "compiled": date, + "go_version": strings.TrimPrefix(runtime.Version(), "go"), + "os": runtime.GOOS, + }, + } + + if err := app.Run(os.Args); err != nil { + fmt.Println(err) + } +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..e744e3b --- /dev/null +++ b/go.mod @@ -0,0 +1,54 @@ +module github.com/mjpitz/pages + +go 1.17 + +require ( + github.com/mjpitz/myago v0.0.0-20220328020418-e35ac8e87490 + github.com/urfave/cli/v2 v2.8.1 +) + +require ( + github.com/go-git/go-billy/v5 v5.3.1 + github.com/go-git/go-git/v5 v5.4.2 + github.com/gorilla/mux v1.8.0 + github.com/pkg/errors v0.9.1 + github.com/prometheus/client_golang v1.12.2 + go.uber.org/zap v1.19.1 + golang.org/x/sync v0.0.0-20210220032951-036812b2e83c +) + +require ( + github.com/Microsoft/go-winio v0.4.16 // indirect + github.com/ProtonMail/go-crypto v0.0.0-20210428141323-04723f9f07d7 // indirect + github.com/acomagu/bufpipe v1.0.3 // indirect + github.com/beorn7/perks v1.0.1 // indirect + github.com/cespare/xxhash/v2 v2.1.2 // indirect + github.com/cpuguy83/go-md2man/v2 v2.0.1 // indirect + github.com/emirpasic/gods v1.12.0 // indirect + github.com/go-git/gcfg v1.5.0 // indirect + github.com/golang/protobuf v1.5.2 // indirect + github.com/imdario/mergo v0.3.12 // indirect + github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect + github.com/jonboulle/clockwork v0.2.2 // indirect + github.com/kevinburke/ssh_config v0.0.0-20201106050909-4977a11b4351 // indirect + github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect + github.com/mitchellh/go-homedir v1.1.0 // indirect + github.com/prometheus/client_model v0.2.0 // indirect + github.com/prometheus/common v0.32.1 // indirect + github.com/prometheus/procfs v0.7.3 // indirect + github.com/russross/blackfriday/v2 v2.1.0 // indirect + github.com/sergi/go-diff v1.1.0 // indirect + github.com/spf13/afero v1.6.0 // indirect + github.com/xanzy/ssh-agent v0.3.0 // indirect + github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect + go.uber.org/atomic v1.9.0 // indirect + go.uber.org/multierr v1.7.0 // indirect + golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b // indirect + golang.org/x/net v0.0.0-20211116231205-47ca1ff31462 // indirect + golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8 // indirect + golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 // indirect + golang.org/x/text v0.3.7 // indirect + google.golang.org/appengine v1.6.6 // indirect + google.golang.org/protobuf v1.26.0 // indirect + gopkg.in/warnings.v0 v0.1.2 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..2648683 --- /dev/null +++ b/go.sum @@ -0,0 +1,674 @@ +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/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= +cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= +cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY= +cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc= +cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0= +cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To= +cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4= +cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M= +cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc= +cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk= +cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs= +cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc= +cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY= +cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o= +cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE= +cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc= +cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg= +cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc= +cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ= +cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE= +cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk= +cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I= +cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw= +cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA= +cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU= +cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw= +cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos= +cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk= +cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs= +cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0= +dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/BurntSushi/toml v1.1.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= +github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= +github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ= +github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA= +github.com/Microsoft/go-winio v0.4.16 h1:FtSW/jqD+l4ba5iPBj9CODVtgfYAD8w2wS923g/cFDk= +github.com/Microsoft/go-winio v0.4.16/go.mod h1:XB6nPKklQyQ7GC9LdcBEcBl8PF76WugXOPRXwdLnMv0= +github.com/ProtonMail/go-crypto v0.0.0-20210428141323-04723f9f07d7 h1:YoJbenK9C67SkzkDfmQuVln04ygHj3vjZfd9FL+GmQQ= 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+// Copyright (C) 2022 The pages authors +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see . +// + +package commands + +import ( + "context" + "net/http" + + "github.com/urfave/cli/v2" + "go.uber.org/zap" + "golang.org/x/sync/errgroup" + + "github.com/mjpitz/myago/flagset" + "github.com/mjpitz/myago/zaputil" + "github.com/mjpitz/pages/internal" + "github.com/mjpitz/pages/internal/git" +) + +type HostConfig struct { + Server internal.ServerConfig `json:"server"` + Git git.Config `json:"git"` +} + +var ( + hostConfig = &HostConfig{ + Server: internal.ServerConfig{ + Public: internal.BindConfig{Address: "0.0.0.0:8080"}, + Private: internal.BindConfig{Address: "0.0.0.0:8081"}, + }, + } + + Host = &cli.Command{ + Name: "host", + Usage: "Host the web page content", + UsageText: "pages host", + Flags: flagset.ExtractPrefix("pages", hostConfig), + Action: func(ctx *cli.Context) error { + log := zaputil.Extract(ctx.Context) + + gitService := git.NewService(hostConfig.Git) + err := gitService.Load(ctx.Context) + if err != nil { + return err + } + + server, err := internal.NewServer(ctx.Context, hostConfig.Server) + if err != nil { + return err + } + + { + server.AdminMux. + HandleFunc("/sync", func(w http.ResponseWriter, r *http.Request) { + err = gitService.Sync(r.Context()) + if err != nil { + log.Error(err.Error()) + http.Error(w, "", http.StatusInternalServerError) + return + } + }). + Methods(http.MethodPost) + } + + server.PublicMux.PathPrefix("/").Handler(http.FileServer(git.HTTP(gitService.FS))).Methods(http.MethodGet) + + log.Info("serving", + zap.String("public", hostConfig.Server.Public.Address), + zap.String("private", hostConfig.Server.Private.Address)) + + group, c := errgroup.WithContext(ctx.Context) + group.Go(server.ListenAndServe) + + <-c.Done() + + _ = server.Shutdown(context.Background()) + _ = group.Wait() + + err = c.Err() + if err != context.Canceled { + return err + } + + return nil + }, + HideHelpCommand: true, + } +) diff --git a/internal/commands/version.go b/internal/commands/version.go new file mode 100644 index 0000000..7b26c09 --- /dev/null +++ b/internal/commands/version.go @@ -0,0 +1,37 @@ +// Copyright (C) 2022 The pages authors +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see . +// + +package commands + +import ( + "text/template" + + "github.com/urfave/cli/v2" +) + +const versionTemplate = "{{ .Name }} {{ .Version }} {{ range $key, $value := .Metadata }}{{ $key }}={{ $value }} {{ end }}\n" + +var Version = &cli.Command{ + Name: "version", + Usage: "Print the binary version information", + UsageText: "pages version", + Action: func(ctx *cli.Context) error { + return template. + Must(template.New("version").Parse(versionTemplate)). + Execute(ctx.App.Writer, ctx.App) + }, + HideHelpCommand: true, +} diff --git a/internal/git/billy_http.go b/internal/git/billy_http.go new file mode 100644 index 0000000..cacf045 --- /dev/null +++ b/internal/git/billy_http.go @@ -0,0 +1,80 @@ +// Copyright (C) 2022 The pages authors +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see . +// + +package git + +import ( + "io/fs" + "net/http" + "os" + "sync" + + "github.com/go-git/go-billy/v5" +) + +// HTTP translates a billy.Filesystem into an http.FileSystem that can be used with the http.FileServer. +func HTTP(fs billy.Filesystem) http.FileSystem { + return http.FS(&httpFS{fs: fs}) +} + +type httpFS struct { + fs billy.Filesystem +} + +func (f *httpFS) Open(name string) (fs.File, error) { + fileInfo, err := f.fs.Stat(name) + if err != nil { + return nil, err + } + + return &httpFile{ + once: sync.Once{}, + fs: f.fs, + name: name, + fileInfo: fileInfo, + }, nil +} + +type httpFile struct { + once sync.Once + + fs billy.Filesystem + name string + + fileInfo os.FileInfo + file billy.File +} + +func (f *httpFile) Stat() (fs.FileInfo, error) { + return f.fileInfo, nil +} + +func (f *httpFile) init() { + f.file, _ = f.fs.Open(f.name) +} + +func (f *httpFile) Read(bytes []byte) (int, error) { + f.once.Do(f.init) + return f.file.Read(bytes) +} + +func (f *httpFile) Close() error { + if f.file != nil { + return f.file.Close() + } + + return nil +} diff --git a/internal/git/service.go b/internal/git/service.go new file mode 100644 index 0000000..745b131 --- /dev/null +++ b/internal/git/service.go @@ -0,0 +1,110 @@ +// Copyright (C) 2022 The pages authors +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see . +// + +package git + +import ( + "context" + + "github.com/go-git/go-billy/v5" + "github.com/go-git/go-billy/v5/memfs" + "github.com/go-git/go-git/v5" + "github.com/go-git/go-git/v5/plumbing" + "github.com/go-git/go-git/v5/plumbing/transport/http" + "github.com/go-git/go-git/v5/storage/memory" + "github.com/pkg/errors" + "go.uber.org/zap" + + "github.com/mjpitz/myago/zaputil" +) + +// Config encapsulates the elements that can be configured about the git service. +type Config struct { + URL string `json:"url" usage:"the git url used to clone the repository"` + Branch string `json:"branch" usage:"the name of the git branch to clone"` + Tag string `json:"tag" usage:"the name of the git tag to clone"` + Username string `json:"username" usage:"the username used to authenticate with the git service"` + Password string `json:"password" usage:"the password used to authenticate with the git service"` +} + +// NewService constructs a Service that manages the underlying git repository. +func NewService(config Config) *Service { + options := &git.CloneOptions{ + URL: config.URL, + Depth: 1, + SingleBranch: true, + } + + if config.Username != "" && config.Password != "" { + options.Auth = &http.BasicAuth{ + Username: config.Username, + Password: config.Password, + } + } + + switch { + case config.Tag != "": + options.ReferenceName = plumbing.NewTagReferenceName(config.Tag) + case config.Branch != "": + options.ReferenceName = plumbing.NewBranchReferenceName(config.Branch) + } + + return &Service{ + options: options, + Store: memory.NewStorage(), + FS: memfs.New(), + } +} + +// Service encapsulates operations that can be performed against the target git repository. +type Service struct { + options *git.CloneOptions + Store *memory.Storage + FS billy.Filesystem + Repository *git.Repository +} + +// Load initializes the git repository given the provided options. This _should_ only be called once. +func (s *Service) Load(ctx context.Context) (err error) { + zaputil.Extract(ctx).Info("cloning", zap.String("url", s.options.URL)) + + s.Repository, err = git.CloneContext(ctx, s.Store, s.FS, s.options) + if err != nil { + return errors.Wrap(err, "failed to clone repository") + } + + return nil +} + +// Sync pulls the underlying repository to ensure it's up-to-date. +func (s *Service) Sync(ctx context.Context) error { + zaputil.Extract(ctx).Info("synchronizing", zap.String("url", s.options.URL)) + + wt, err := s.Repository.Worktree() + if err != nil { + return errors.Wrap(err, "failed to obtain worktree") + } + + _ = wt.PullContext(ctx, &git.PullOptions{ + ReferenceName: s.options.ReferenceName, + SingleBranch: s.options.SingleBranch, + Depth: s.options.Depth, + Auth: s.options.Auth, + Force: true, + }) + + return nil +} diff --git a/internal/lock/lock.go b/internal/lock/lock.go new file mode 100644 index 0000000..521f9f9 --- /dev/null +++ b/internal/lock/lock.go @@ -0,0 +1,48 @@ +// Copyright (C) 2022 The pages authors +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see . +// + +package lock + +import ( + "context" +) + +// New creates a Lock and populates its channel. Once constructed, callers can use the Lock(ctx) method to lock a +// portion of code. Unlike the sync.Mutex implementation, this allows a Lock operation to be deadlined or cancelled +// using the provided context. +func New() Lock { + lock := Lock{ch: make(chan bool, 1)} + lock.ch <- true + + return lock +} + +// Lock encapsulates the channel used to provide locking and unlocking capabilities. We don't want this channel +// exposed as someone may interact with it in malicious ways. +type Lock struct { + ch chan bool +} + +// Lock attempts to obtain the lock given the provided context. This call can be time-bound using the +// context.WithDeadline method call to decorate the context with a halting point. +func (l Lock) Lock(ctx context.Context) (unlock func(), err error) { + select { + case <-ctx.Done(): + return nil, ctx.Err() + case v := <-l.ch: + return func() { l.ch <- v }, nil + } +} diff --git a/internal/metrics/metrics.go b/internal/metrics/metrics.go new file mode 100644 index 0000000..a7d0078 --- /dev/null +++ b/internal/metrics/metrics.go @@ -0,0 +1,38 @@ +// Copyright (C) 2022 The pages authors +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see . +// + +package metrics + +import ( + "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/promauto" +) + +var ( + namespace = "pages" + page = "page" + + // PageViewCount tracks page views by how often they're loaded. + PageViewCount = promauto.NewCounterVec( + prometheus.CounterOpts{ + Namespace: namespace, + Subsystem: page, + Name: "view_count", + Help: "page views", + }, + []string{"path", "referrer", "country"}, + ) +) diff --git a/internal/middleware.go b/internal/middleware.go new file mode 100644 index 0000000..fc78a10 --- /dev/null +++ b/internal/middleware.go @@ -0,0 +1,128 @@ +// Copyright (C) 2022 The pages authors +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see . +// + +package internal + +import ( + "net" + "net/http" + "path" + "regexp" + "strings" + + "github.com/gorilla/mux" + + "github.com/mjpitz/pages/internal/metrics" +) + +// GeoIP provides an abstraction for looking up a country code from an IP address. +type GeoIP interface { + Lookup(ip string) (countryCode string) +} + +type emptyGeoIP struct{} + +func (e emptyGeoIP) Lookup(ip string) (countryCode string) { + return "" +} + +// Matcher defines an abstraction for matching paths. +type Matcher func(s string) bool + +// AnyMatcher returns a matcher who returns true if any of the provided matchers match the string. +func AnyMatcher(matchers ...Matcher) Matcher { + return func(s string) bool { + for _, matcher := range matchers { + if matcher(s) { + return true + } + } + + return false + } +} + +// AssetMatcher returns a matcher who returns true when an asset file is requested. +func AssetMatcher() Matcher { + return func(s string) bool { + return path.Ext(s) != "" + } +} + +// PrefixMatcher returns a matcher who returns true if the string matches the provided prefix. +func PrefixMatcher(prefix string) Matcher { + return func(s string) bool { + return strings.HasPrefix(s, prefix) + } +} + +// RegexMatcher returns a matcher who returns true if the string matches the provided regular expression pattern. +func RegexMatcher(pattern string) Matcher { + exp := regexp.MustCompile(pattern) + + return func(s string) bool { + return exp.MatchString(s) + } +} + +// Middleware produces an HTTP middleware function that reports page views. +func Middleware(geoIP GeoIP, excludes ...Matcher) mux.MiddlewareFunc { + exclude := AnyMatcher(excludes...) + + return func(next http.Handler) http.Handler { + return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + if exclude(r.URL.Path) { + next.ServeHTTP(w, r) + return + } + + clientIP, _, err := net.SplitHostPort(r.RemoteAddr) + if err != nil { + http.Error(w, "", http.StatusBadRequest) + return + } + + countryCode := geoIP.Lookup(clientIP) + + d := &writer{w, http.StatusOK} + defer func() { + if d.statusCode != http.StatusNotFound { + metrics.PageViewCount.WithLabelValues(r.URL.Path, r.Referer(), countryCode).Inc() + } + }() + + next.ServeHTTP(d, r) + }) + } +} + +type writer struct { + writer http.ResponseWriter + statusCode int +} + +func (w *writer) Header() http.Header { + return w.writer.Header() +} + +func (w *writer) Write(bytes []byte) (int, error) { + return w.writer.Write(bytes) +} + +func (w *writer) WriteHeader(statusCode int) { + w.statusCode = statusCode + w.writer.WriteHeader(statusCode) +} diff --git a/internal/server.go b/internal/server.go new file mode 100644 index 0000000..f067f03 --- /dev/null +++ b/internal/server.go @@ -0,0 +1,136 @@ +// Copyright (C) 2022 The pages authors +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see . +// + +package internal + +import ( + "context" + "net" + "net/http" + + "github.com/gorilla/mux" + "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/promhttp" + "golang.org/x/sync/errgroup" + + "github.com/mjpitz/myago/auth" + basicauth "github.com/mjpitz/myago/auth/basic" + httpauth "github.com/mjpitz/myago/auth/http" + "github.com/mjpitz/myago/headers" + "github.com/mjpitz/myago/livetls" +) + +// AdminConfig encapsulates configuration for the administrative process. +type AdminConfig struct { + Prefix string `json:"prefix" usage:"configure the prefix to use for admin endpoints" default:"/_admin"` + Username string `json:"username" usage:"specify the username used to authenticate requests with the admin endpoints" default:"admin"` + Password string `json:"password" usage:"specify the password used to authenticate requests with the admin endpoints"` +} + +// BindConfig defines the set of configuration options for setting up a server. +type BindConfig struct { + Address string `json:"address" usage:"configure the bind address for the server"` +} + +// ServerConfig defines configuration for a public and private interface. +type ServerConfig struct { + Admin AdminConfig `json:"admin"` + TLS livetls.Config `json:"tls"` + Public BindConfig `json:"public"` + Private BindConfig `json:"private"` +} + +// NewServer constructs a Server from it's associated configuration. +func NewServer(ctx context.Context, config ServerConfig) (*Server, error) { + tls, err := livetls.New(ctx, config.TLS) + if err != nil { + return nil, err + } + + private := mux.NewRouter() + private.Handle("/metrics", promhttp.Handler()) + + public := mux.NewRouter() + public.Use( + func(next http.Handler) http.Handler { return headers.HTTP(next) }, + Middleware( + emptyGeoIP{}, + AssetMatcher(), + PrefixMatcher(config.Admin.Prefix), + ), + ) + + admin := public.Path(config.Admin.Prefix).Subrouter() + + if config.Admin.Password != "" { + authenticate := basicauth.Static(config.Admin.Username, config.Admin.Password) + required := auth.Required() + + admin.Use(func(next http.Handler) http.Handler { + return httpauth.Handler(next, authenticate, required) + }) + } + + return &Server{ + AdminMux: admin, + + PublicMux: public, + Public: &http.Server{ + TLSConfig: tls, + Addr: config.Public.Address, + Handler: promhttp.InstrumentMetricHandler(prometheus.DefaultRegisterer, public), + BaseContext: func(l net.Listener) context.Context { + return ctx + }, + }, + + PrivateMux: private, + Private: &http.Server{ + TLSConfig: tls, + Addr: config.Private.Address, + Handler: promhttp.InstrumentMetricHandler(prometheus.DefaultRegisterer, private), + BaseContext: func(l net.Listener) context.Context { + return ctx + }, + }, + }, nil +} + +// Server hosts a Public and Private HTTP server. +type Server struct { + AdminMux *mux.Router + PublicMux *mux.Router + Public *http.Server + PrivateMux *mux.Router + Private *http.Server +} + +// Shutdown closes the underlying Public and Private HTTP server. +func (s *Server) Shutdown(ctx context.Context) error { + _ = s.Public.Shutdown(ctx) + _ = s.Private.Shutdown(ctx) + + return nil +} + +// ListenAndServe starts underlying Public and Private HTTP servers. +func (s *Server) ListenAndServe() error { + var group errgroup.Group + group.Go(s.Public.ListenAndServe) + group.Go(s.Private.ListenAndServe) + + return group.Wait() +} diff --git a/legal/header.txt b/legal/header.txt new file mode 100644 index 0000000..44bfe41 --- /dev/null +++ b/legal/header.txt @@ -0,0 +1,15 @@ +Copyright (C) {{ .Year }} The pages authors + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU Affero General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Affero General Public License for more details. + +You should have received a copy of the GNU Affero General Public License +along with this program. If not, see . + diff --git a/package.json b/package.json new file mode 100644 index 0000000..e975035 --- /dev/null +++ b/package.json @@ -0,0 +1,5 @@ +{ + "name": "@mjpitz/pages", + "version": "0.0.0", + "private": true +} diff --git a/scripts/dist-go.sh b/scripts/dist-go.sh new file mode 100644 index 0000000..d9f8ce5 --- /dev/null +++ b/scripts/dist-go.sh @@ -0,0 +1,37 @@ +#!/usr/bin/env bash +# Copyright (C) 2022 The pages authors +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU Affero General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Affero General Public License for more details. +# +# You should have received a copy of the GNU Affero General Public License +# along with this program. If not, see . +# + +set -e -o pipefail + +go mod download +go mod verify + +if [[ -z "${VERSION}" ]]; then + goreleaser --snapshot --skip-publish --rm-dist +else + goreleaser +fi + +rm -rf "$(pwd)/pages" + +os=$(uname | tr '[:upper:]' '[:lower:]') +arch="$(uname -m)" +if [[ "$arch" == "x86_64" ]]; then + ln -s "$(pwd)/dist/pages_${os}_amd64_v1/pages" "$(pwd)/pages" +elif [[ "$arch" == "aarch64" ]]; then + ln -s "$(pwd)/dist/pages_${os}_arm64/pages" "$(pwd)/pages" +fi