begin work on mailing list server, got the fundamental components done

pull/15/head
Brian Picciano 3 years ago
parent 0655b19283
commit 6bec0e3964
  1. 7
      srv/Makefile
  2. 24
      srv/cmd/mediocre-blog/main.go
  3. 20
      srv/default.nix
  4. 14
      srv/go.mod
  5. 229
      srv/go.sum
  6. 75
      srv/mailinglist/mailer.go
  7. 240
      srv/mailinglist/mailinglist.go
  8. 240
      srv/mailinglist/store.go
  9. 102
      srv/mailinglist/store_test.go
  10. 1
      static/.gitignore

@ -0,0 +1,7 @@
build:
nix-build -A build
shell:
nix-shell -A shell

@ -0,0 +1,24 @@
package main
import (
"flag"
"log"
"net/http"
)
func main() {
staticDir := flag.String("static-dir", "", "Directory from which static files are served")
//redisAddr := flag.String("redis-addr", "127.0.0.1:6379", "Address which redis is listening on")
listenAddr := flag.String("listen-addr", ":4000", "Address to listen for HTTP requests on")
flag.Parse()
if *staticDir == "" {
log.Fatal("-static-dir is required")
}
mux := http.NewServeMux()
mux.Handle("/", http.FileServer(http.Dir(*staticDir)))
log.Printf("listening on %q", *listenAddr)
log.Fatal(http.ListenAndServe(*listenAddr, mux))
}

@ -0,0 +1,20 @@
let
utils = (import ../nix) {};
pkgs = utils.pkgs;
system = utils.system;
in
{
build = pkgs.buildGoModule {
pname = "mediocre-blog-srv";
version = "dev";
src = ./.;
vendorSha256 = "0xr5gks5mrh34s5npncw71wncrzqrhnm3vjfwdakd7fzd6iw049z";
};
shell = pkgs.stdenv.mkDerivation {
name = "mediocre-blog-srv-shell";
buildInputs = [ pkgs.go ];
};
}

@ -0,0 +1,14 @@
module blog.mediocregopher.com/srv
go 1.16
require (
github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21
github.com/emersion/go-smtp v0.15.0
github.com/google/uuid v1.3.0
github.com/mattn/go-sqlite3 v1.14.8
github.com/rubenv/sql-migrate v0.0.0-20210614095031-55d5740dbbcc
github.com/stretchr/testify v1.7.0
github.com/tilinna/clock v1.1.0
github.com/ziutek/mymysql v1.5.4 // indirect
)

@ -0,0 +1,229 @@
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/Masterminds/goutils v1.1.0/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
github.com/Masterminds/semver v1.5.0/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
github.com/Masterminds/sprig v2.22.0+incompatible/go.mod h1:y6hNFY5UBTIWBxnzTeuNhlNS5hqE0NB0E6fgfo2Br3o=
github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/denisenkom/go-mssqldb v0.9.0/go.mod h1:xbL0rPBG9cCiLr28tMa8zpbdarY27NDyej4t/EjAShU=
github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21 h1:OJyUGMJTzHTd1XQp98QTaHernxMYzRaOasRir9hUlFQ=
github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21/go.mod h1:iL2twTeMvZnrg54ZoPDNfJaJaqy0xIQFuBdrLsmspwQ=
github.com/emersion/go-smtp v0.15.0 h1:3+hMGMGrqP/lqd7qoxZc1hTU8LY8gHV9RFGWlqSDmP8=
github.com/emersion/go-smtp v0.15.0/go.mod h1:qm27SGYgoIPRot6ubfQ/GpiPy/g3PaZAVRxiO/sDUgQ=
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
github.com/go-sql-driver/mysql v1.5.0 h1:ozyZYNQW3x3HtqT1jira07DN2PArx2v7/mN66gGcHOs=
github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
github.com/gobuffalo/logger v1.0.3 h1:YaXOTHNPCvkqqA7w05A4v0k2tCdpr+sgFlgINbQ6gqc=
github.com/gobuffalo/logger v1.0.3/go.mod h1:SoeejUwldiS7ZsyCBphOGURmWdwUFXs0J7TCjEhjKxM=
github.com/gobuffalo/packd v1.0.0 h1:6ERZvJHfe24rfFmA9OaoKBdC7+c9sydrytMg8SdFGBM=
github.com/gobuffalo/packd v1.0.0/go.mod h1:6VTc4htmJRFB7u1m/4LeMTWjFoYrUiBkU9Fdec9hrhI=
github.com/gobuffalo/packr/v2 v2.8.1 h1:tkQpju6i3EtMXJ9uoF5GT6kB+LMTimDWD8Xvbz6zDVA=
github.com/gobuffalo/packr/v2 v2.8.1/go.mod h1:c/PLlOuTU+p3SybaJATW3H6lX/iK7xEz5OeMf+NnJpg=
github.com/godror/godror v0.24.2/go.mod h1:wZv/9vPiUib6tkoDl+AZ/QLf5YZgMravZ7jxH2eQWAE=
github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe/go.mod h1:8vg3r2VgvsThLBIFL93Qb5yWzgyZWhEmBwUJWevAkK0=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=
github.com/grpc-ecosystem/grpc-gateway v1.9.0/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk=
github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
github.com/huandu/xstrings v1.3.2/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
github.com/karrick/godirwalk v1.15.8 h1:7+rWAZPn9zuRxaIqqT8Ohs2Q2Ac0msBqwRdxNCr2VVs=
github.com/karrick/godirwalk v1.15.8/go.mod h1:j4mkqPuvaLI8mp1DroR3P6ad7cyYd4c1qeJ3RV7ULlk=
github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/konsorten/go-windows-terminal-sequences v1.0.2 h1:DB17ag19krx9CFsz4o3enTrPXyIXCl+2iCXH/aMAp9s=
github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/kortschak/utter v1.0.1/go.mod h1:vSmSjbyrlKjjsL71193LmzBOKgwePk9DH6uFaWHIInc=
github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/lib/pq v1.10.0 h1:Zx5DJFEYQXio93kgXnQ09fXNiUKsqv4OUEu2UtGcB1E=
github.com/lib/pq v1.10.0/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
github.com/markbates/errx v1.1.0 h1:QDFeR+UP95dO12JgW+tgi2UVfo0V8YBHiUIOaeBPiEI=
github.com/markbates/errx v1.1.0/go.mod h1:PLa46Oex9KNbVDZhKel8v1OT7hD5JZ2eI7AHhA0wswc=
github.com/markbates/oncer v1.0.0 h1:E83IaVAHygyndzPimgUYJjbshhDTALZyXxvk9FOlQRY=
github.com/markbates/oncer v1.0.0/go.mod h1:Z59JA581E9GP6w96jai+TGqafHPW+cPfRxz2aSZ0mcI=
github.com/markbates/safe v1.0.1 h1:yjZkbvRM6IzKj9tlu/zMJLS0n/V351OZWRnF3QfaUxI=
github.com/markbates/safe v1.0.1/go.mod h1:nAqgmRi7cY2nqMc92/bSEeQA+R4OheNU2T1kNSCBdG0=
github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
github.com/mattn/go-isatty v0.0.3/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
github.com/mattn/go-oci8 v0.1.1/go.mod h1:wjDx6Xm9q7dFtHJvIlrI99JytznLw5wQ4R+9mNXJwGI=
github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
github.com/mattn/go-sqlite3 v1.14.6/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
github.com/mattn/go-sqlite3 v1.14.8 h1:gDp86IdQsN/xWjIEmr9MF6o9mpksUgh0fu+9ByFxzIU=
github.com/mattn/go-sqlite3 v1.14.8/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
github.com/mitchellh/cli v1.1.2/go.mod h1:6iaV0fGdElS6dPBx0EApTxHrcWvmJphyh2n8YBLPPZ4=
github.com/mitchellh/copystructure v1.0.0/go.mod h1:SNtv71yrdKgLRyLFxmLdkAbkKEFWgYaq1OVrnRcwhnw=
github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
github.com/mitchellh/reflectwalk v1.0.0/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
github.com/prometheus/client_golang v0.9.3/go.mod h1:/TN21ttK/J9q6uSwhBd54HahCDft0ttaMvbicHlPoso=
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
github.com/prometheus/common v0.0.0-20181113130724-41aa239b4cce/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
github.com/prometheus/common v0.4.0/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
github.com/prometheus/procfs v0.0.0-20190507164030-5867b95ac084/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40TwIPHuXU=
github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
github.com/rogpeppe/go-internal v1.5.2/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
github.com/rubenv/sql-migrate v0.0.0-20210614095031-55d5740dbbcc h1:BD7uZqkN8CpjJtN/tScAKiccBikU4dlqe/gNrkRaPY4=
github.com/rubenv/sql-migrate v0.0.0-20210614095031-55d5740dbbcc/go.mod h1:HFLT6i9iR4QBOF5rdCyjddC9t59ArqWJV2xx+jwcCMo=
github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
github.com/sirupsen/logrus v1.4.2 h1:SPIRibHv4MatM3XXNO2BJeFLZwZ2LvZgfQ5+UNI2im4=
github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4kGIyLM=
github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
github.com/spf13/cobra v0.0.6/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHNrgE=
github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo=
github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
github.com/spf13/viper v1.4.0/go.mod h1:PTJ7Z/lr49W6bUbkmS1V3by4uWynFiR9p7+dSq/yZzE=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/tilinna/clock v1.1.0 h1:6IQQQCo6KoBxVudv6gwtY8o4eDfhHo8ojA5dP0MfhSs=
github.com/tilinna/clock v1.1.0/go.mod h1:ZsP7BcY7sEEz7ktc0IVy8Us6boDrK8VradlKRUGfOao=
github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGrc=
github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
github.com/ziutek/mymysql v1.5.4 h1:GB0qdRGsTwQSBVYuVShFBKaXSnSnYYC2d9knnE1LHFs=
github.com/ziutek/mymysql v1.5.4/go.mod h1:LMSpPZ6DbqWFxNCHW77HeMg9I646SAhApZ/wKdgO/C0=
go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20191122220453-ac88ee75c92c/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a h1:vclmkQCjlDX5OydZ9wv8rBCcS0QyQY66Mpf/7BZbInM=
golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190522155817-f3200d17e092/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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 v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/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 v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/pU5OE2C0WrNTOYK1Uuc=
golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20200308013534-11ec41452d41/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/gorp.v1 v1.7.2 h1:j3DWlAyGVv8whO7AcIWznQ2Yj7yJkn34B8s63GViAAw=
gopkg.in/gorp.v1 v1.7.2/go.mod h1:Wo3h+DBQZIxATwftsglhdD/62zRFPhGhTiu5jUJmCaw=
gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
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gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
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honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

@ -0,0 +1,75 @@
package mailinglist
import (
"github.com/emersion/go-sasl"
"github.com/emersion/go-smtp"
)
// Mailer is used to deliver emails to arbitrary recipients.
type Mailer interface {
Send(to, subject, body string) error
}
// MailerParams are used to initialize a new Mailer instance
type MailerParams struct {
SMTPAddr string
// Optional, if not given then no auth is attempted.
SMTPAuth sasl.Client
// The sending email address to use for all emails being sent.
SendAs string
}
type mailer struct {
params MailerParams
}
// NewMailer initializes and returns a Mailer which will use an external SMTP
// server to deliver email.
func NewMailer(params MailerParams) Mailer {
return &mailer{
params: params,
}
}
func (m *mailer) Send(to, subject, body string) error {
msg := []byte("From: " + m.params.SendAs + "\r\n" +
"To: " + to + "\r\n" +
"Subject: " + subject + "\r\n\r\n" +
body + "\r\n")
c, err := smtp.Dial(m.params.SMTPAddr)
if err != nil {
return err
}
defer c.Close()
if err = c.Auth(m.params.SMTPAuth); err != nil {
return err
}
if err = c.Mail(m.params.SendAs, nil); err != nil {
return err
}
if err = c.Rcpt(to); err != nil {
return err
}
w, err := c.Data()
if err != nil {
return err
}
if _, err = w.Write(msg); err != nil {
return err
}
if err = w.Close(); err != nil {
return err
}
return c.Quit()
}

@ -0,0 +1,240 @@
// Package mailinglist manages the list of subscribed emails and allows emailing
// out to them.
package mailinglist
import (
"bytes"
"errors"
"fmt"
"html/template"
"io"
"strings"
"github.com/google/uuid"
"github.com/tilinna/clock"
)
var (
// ErrAlreadyVerified is used when the email is already fully subscribed.
ErrAlreadyVerified = errors.New("email is already subscribed")
)
// MailingList is able to subscribe, unsubscribe, and iterate through emails.
type MailingList interface {
// May return ErrAlreadyVerified.
BeginSubscription(email string) error
// May return ErrNotFound or ErrAlreadyVerified.
FinalizeSubscription(subToken string) error
// May return ErrNotFound.
Unsubscribe(unsubToken string) error
// Publish blasts the mailing list with an update about a new blog post.
Publish(postTitle, postURL string) error
}
// Params are parameters used to initialize a new MailingList. All fields are
// required unless otherwise noted.
type Params struct {
Store Store
Mailer Mailer
Clock clock.Clock
// URL of the page which should be navigated to in order to finalize a
// subscription.
FinalizeSubURL string
// URL of the page which should be navigated to in order to remove a
// subscription.
UnsubURL string
}
type mailingList struct {
params Params
}
var beginSubTpl = template.Must(template.New("beginSub").Parse(`
Welcome to the Mediocre Blog mailing list! By subscribing to this mailing list
you are signing up to receive an email everytime a new blog post is published.
In order to complete your subscription please navigate to the following link:
{{ .SubLink }}
This mailing list is built and run using my own hardware and software, and I
solemnly swear that you'll never receive an email from it unless there's a new
blog post.
If you did not initiate this email, and/or do not wish to subscribe to the
mailing list, then simply delete this email and pretend that nothing ever
happened.
- Brian
`))
func (m *mailingList) BeginSubscription(email string) error {
emailRecord, err := m.params.Store.Get(email)
if errors.Is(err, ErrNotFound) {
emailRecord = Email{
Email: email,
SubToken: uuid.New().String(),
CreatedAt: m.params.Clock.Now(),
}
if err := m.params.Store.Set(emailRecord); err != nil {
return fmt.Errorf("storing pending email: %w", err)
}
} else if err != nil {
return fmt.Errorf("finding existing email record: %w", err)
} else if !emailRecord.VerifiedAt.IsZero() {
return ErrAlreadyVerified
}
body := new(bytes.Buffer)
err = beginSubTpl.Execute(body, struct {
SubLink string
}{
SubLink: fmt.Sprintf("%s?subToken=%s", m.params.FinalizeSubURL, emailRecord.SubToken),
})
if err != nil {
return fmt.Errorf("executing beginSubTpl: %w", err)
}
err = m.params.Mailer.Send(
email,
"Mediocre Blog - Please verify your email address",
body.String(),
)
if err != nil {
return fmt.Errorf("sending email: %w", err)
}
return nil
}
func (m *mailingList) FinalizeSubscription(subToken string) error {
emailRecord, err := m.params.Store.GetBySubToken(subToken)
if err != nil {
return fmt.Errorf("retrieving email record: %w", err)
} else if !emailRecord.VerifiedAt.IsZero() {
return ErrAlreadyVerified
}
emailRecord.VerifiedAt = m.params.Clock.Now()
emailRecord.UnsubToken = uuid.New().String()
if err := m.params.Store.Set(emailRecord); err != nil {
return fmt.Errorf("storing verified email: %w", err)
}
return nil
}
func (m *mailingList) Unsubscribe(unsubToken string) error {
emailRecord, err := m.params.Store.GetByUnsubToken(unsubToken)
if err != nil {
return fmt.Errorf("retrieving email record: %w", err)
}
if err := m.params.Store.Delete(emailRecord.Email); err != nil {
return fmt.Errorf("deleting email record: %w", err)
}
return nil
}
var publishTpl = template.Must(template.New("publish").Parse(`
A new post has been published to the Mediocre Blog!
{{ .PostTitle }}
{{ .PostURL }}
If you're interested then please check it out!
If you'd like to unsubscribe from this mailing list then visit the following
link instead:
{{ .UnsubURL }}
- Brian
`))
type multiErr []error
func (m multiErr) Error() string {
if len(m) == 0 {
panic("multiErr with no members")
}
b := new(strings.Builder)
fmt.Fprintln(b, "The following errors were encountered:")
for _, err := range m {
fmt.Fprintf(b, "\t- %s\n", err.Error())
}
return b.String()
}
func (m *mailingList) Publish(postTitle, postURL string) error {
var mErr multiErr
iter := m.params.Store.GetAll()
for {
emailRecord, err := iter()
if errors.Is(err, io.EOF) {
break
} else if err != nil {
mErr = append(mErr, fmt.Errorf("iterating through email records: %w", err))
break
} else if emailRecord.VerifiedAt.IsZero() {
continue
}
body := new(bytes.Buffer)
err = publishTpl.Execute(body, struct {
PostTitle string
PostURL string
UnsubURL string
}{
PostTitle: postTitle,
PostURL: postURL,
UnsubURL: fmt.Sprintf("%s?unsubToken=%s", m.params.UnsubURL, emailRecord.UnsubToken),
})
if err != nil {
mErr = append(mErr, fmt.Errorf("rendering publish email template for %q: %w", emailRecord.Email, err))
continue
}
err = m.params.Mailer.Send(
emailRecord.Email,
fmt.Sprintf("Mediocre Blog - New Post! - %s", postTitle),
body.String(),
)
if err != nil {
mErr = append(mErr, fmt.Errorf("sending email to %q: %w", emailRecord.Email, err))
continue
}
}
if len(mErr) > 0 {
return mErr
}
return nil
}

@ -0,0 +1,240 @@
package mailinglist
import (
"crypto/sha512"
"database/sql"
"encoding/base64"
"errors"
"fmt"
"io"
"strings"
"time"
_ "github.com/mattn/go-sqlite3"
migrate "github.com/rubenv/sql-migrate"
)
var (
// ErrNotFound is used to indicate an email could not be found in the
// database.
ErrNotFound = errors.New("no record for given email found")
)
// EmailIterator will iterate through a sequence of emails, returning the next
// email in the sequence on each call, or returning io.EOF.
type EmailIterator func() (Email, error)
// Email describes all information related to an email which has yet
// to be verified.
type Email struct {
Email string
SubToken string
CreatedAt time.Time
UnsubToken string
VerifiedAt time.Time
}
// Store is used for storing MailingList related information.
type Store interface {
// Set is used to set the information related to an email.
Set(Email) error
// Get will return the record for the given email, or ErrNotFound.
Get(email string) (Email, error)
// GetBySubToken will return the record for the given SubToken, or
// ErrNotFound.
GetBySubToken(subToken string) (Email, error)
// GetByUnsubToken will return the record for the given UnsubToken, or
// ErrNotFound.
GetByUnsubToken(unsubToken string) (Email, error)
// Delete will delete the record for the given email.
Delete(email string) error
// GetAll returns all emails for which there is a record.
GetAll() EmailIterator
Close() error
}
var migrations = []*migrate.Migration{
&migrate.Migration{
Id: "1",
Up: []string{
`CREATE TABLE emails (
id TEXT PRIMARY KEY,
email TEXT NOT NULL,
sub_token TEXT NOT NULL,
created_at INTEGER NOT NULL,
unsub_token TEXT,
verified_at INTEGER
)`,
},
Down: []string{"DROP TABLE emails"},
},
}
type store struct {
db *sql.DB
}
// NewStore initializes a new store using the given SQL DB instance.
func NewStore(dbFile string) (Store, error) {
db, err := sql.Open("sqlite3", dbFile)
if err != nil {
return nil, fmt.Errorf("opening sqlite file: %w", err)
}
migrations := &migrate.MemoryMigrationSource{Migrations: migrations}
if _, err := migrate.Exec(db, "sqlite3", migrations, migrate.Up); err != nil {
return nil, fmt.Errorf("running migrations: %w", err)
}
return &store{
db: db,
}, nil
}
func (s *store) emailID(email string) string {
email = strings.ToLower(email)
h := sha512.New()
h.Write([]byte(email))
return base64.URLEncoding.EncodeToString(h.Sum(nil))
}
func (s *store) Set(email Email) error {
_, err := s.db.Exec(
`INSERT INTO emails (
id, email, sub_token, created_at, unsub_token, verified_at
)
VALUES
(?, ?, ?, ?, ?, ?)
ON CONFLICT (id) DO UPDATE SET
email=excluded.email,
sub_token=excluded.sub_token,
unsub_token=excluded.unsub_token,
verified_at=excluded.verified_at
`,
s.emailID(email.Email),
email.Email,
email.SubToken,
email.CreatedAt.Unix(),
email.UnsubToken,
sql.NullInt64{
Int64: email.VerifiedAt.Unix(),
Valid: !email.VerifiedAt.IsZero(),
},
)
return err
}
var scanCols = []string{
"email", "sub_token", "created_at", "unsub_token", "verified_at",
}
type row interface {
Scan(...interface{}) error
}
func (s *store) scanRow(row row) (Email, error) {
var email Email
var createdAt int64
var verifiedAt sql.NullInt64
err := row.Scan(
&email.Email,
&email.SubToken,
&createdAt,
&email.UnsubToken,
&verifiedAt,
)
if err != nil {
return Email{}, err
}
email.CreatedAt = time.Unix(createdAt, 0)
if verifiedAt.Valid {
email.VerifiedAt = time.Unix(verifiedAt.Int64, 0)
}
return email, nil
}
func (s *store) scanSingleRow(row *sql.Row) (Email, error) {
email, err := s.scanRow(row)
if errors.Is(err, sql.ErrNoRows) {
return Email{}, ErrNotFound
}
return email, err
}
func (s *store) Get(email string) (Email, error) {
row := s.db.QueryRow(
`SELECT `+strings.Join(scanCols, ",")+`
FROM emails
WHERE id=?`,
s.emailID(email),
)
return s.scanSingleRow(row)
}
func (s *store) GetBySubToken(subToken string) (Email, error) {
row := s.db.QueryRow(
`SELECT `+strings.Join(scanCols, ",")+`
FROM emails
WHERE sub_token=?`,
subToken,
)
return s.scanSingleRow(row)
}
func (s *store) GetByUnsubToken(unsubToken string) (Email, error) {
row := s.db.QueryRow(
`SELECT `+strings.Join(scanCols, ",")+`
FROM emails
WHERE unsub_token=?`,
unsubToken,
)
return s.scanSingleRow(row)
}
func (s *store) Delete(email string) error {
_, err := s.db.Exec(
`DELETE FROM emails WHERE id=?`,
s.emailID(email),
)
return err
}
func (s *store) GetAll() EmailIterator {
rows, err := s.db.Query(
`SELECT ` + strings.Join(scanCols, ",") + `
FROM emails`,
)
return func() (Email, error) {
if err != nil {
return Email{}, err
} else if !rows.Next() {
return Email{}, io.EOF
}
return s.scanRow(rows)
}
}
func (s *store) Close() error {
return s.db.Close()
}

@ -0,0 +1,102 @@
package mailinglist
import (
"io"
"io/ioutil"
"os"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestStore(t *testing.T) {
tmpFile, err := ioutil.TempFile(os.TempDir(), "mediocre-blog-mailinglist-store-test-")
if err != nil {
t.Fatal("Cannot create temporary file", err)
}
tmpFilePath := tmpFile.Name()
tmpFile.Close()
t.Logf("using temporary sqlite file at %q", tmpFilePath)
t.Cleanup(func() {
if err := os.Remove(tmpFilePath); err != nil {
panic(err)
}
})
store, err := NewStore(tmpFilePath)
assert.NoError(t, err)
t.Cleanup(func() {
assert.NoError(t, store.Close())
})
now := func() time.Time {
return time.Now().Truncate(time.Second)
}
assertGet := func(t *testing.T, email Email) {
t.Helper()
gotEmail, err := store.Get(email.Email)
assert.NoError(t, err)
assert.Equal(t, email, gotEmail)
gotEmail, err = store.GetBySubToken(email.SubToken)
assert.NoError(t, err)
assert.Equal(t, email, gotEmail)
if email.UnsubToken != "" {
gotEmail, err = store.GetByUnsubToken(email.UnsubToken)
assert.NoError(t, err)
assert.Equal(t, email, gotEmail)
}
}
assertNotFound := func(t *testing.T, email string) {
t.Helper()
_, err := store.Get(email)
assert.ErrorIs(t, err, ErrNotFound)
}
// now start actual tests
// GetAll should not do anything, there's no data
_, err = store.GetAll()()
assert.ErrorIs(t, err, io.EOF)
emailFoo := Email{
Email: "foo",
SubToken: "subTokenFoo",
CreatedAt: now(),
}
// email isn't stored yet, shouldn't exist
assertNotFound(t, emailFoo.Email)
// Set an email, now it should exist
assert.NoError(t, store.Set(emailFoo))
assertGet(t, emailFoo)
// Update the email with an unsub token
emailFoo.UnsubToken = "unsubTokenFoo"
emailFoo.VerifiedAt = now()
assert.NoError(t, store.Set(emailFoo))
assertGet(t, emailFoo)
// GetAll should now only return that email
iter := store.GetAll()
gotEmail, err := iter()
assert.NoError(t, err)
assert.Equal(t, emailFoo, gotEmail)
_, err = iter()
assert.ErrorIs(t, err, io.EOF)
// Delete the email, it should be gone
assert.NoError(t, store.Delete(emailFoo.Email))
assertNotFound(t, emailFoo.Email)
_, err = store.GetAll()()
assert.ErrorIs(t, err, io.EOF)
}

1
static/.gitignore vendored

@ -3,4 +3,3 @@
*.gem
.jekyll-metadata
_site
result

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