.gitignore

@@ -0,0 +1,2 @@
+
+ipld-ethcl-indexer

go.mod

@@ -4,10 +4,25 @@ go 1.18
 
 require github.com/sirupsen/logrus v1.8.1
 
+require (
+	github.com/jackc/chunkreader/v2 v2.0.1 // indirect
+	github.com/jackc/pgconn v1.11.0 // indirect
+	github.com/jackc/pgio v1.0.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgproto3/v2 v2.2.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
+	github.com/jackc/pgtype v1.10.0 // indirect
+	github.com/jackc/puddle v1.2.1 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	golang.org/x/crypto v0.0.0-20220411220226-7b82a4e95df4 // indirect
+)
+
 require (
 	github.com/fsnotify/fsnotify v1.5.1 // indirect
+	github.com/georgysavva/scany v0.3.0
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/jackc/pgx/v4 v4.15.0
 	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/mitchellh/mapstructure v1.4.3 // indirect
 	github.com/pelletier/go-toml v1.9.4 // indirect

go.sum

@@ -38,6 +38,7 @@ cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3f
 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/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
@@ -46,7 +47,12 @@ github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDk
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ=
+github.com/cockroachdb/cockroach-go/v2 v2.2.0/go.mod h1:u3MiKYGupPPjkn3ozknpMUpxPaNLTFWAya419/zv6eI=
+github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/cpuguy83/go-md2man/v2 v2.0.1/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
@@ -57,9 +63,18 @@ github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.m
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/fsnotify/fsnotify v1.5.1 h1:mZcQUHVQUQWoPXXtuf9yuEXKudkV2sx1E06UadKWpgI=
 github.com/fsnotify/fsnotify v1.5.1/go.mod h1:T3375wBYaZdLLcVNkcVbzGHY7f1l/uK5T5Ai1i3InKU=
+github.com/georgysavva/scany v0.3.0 h1:MA1aEqPbnNuiek59gMpNPqQrXXroyFj5jCADlETdxiA=
+github.com/georgysavva/scany v0.3.0/go.mod h1:q8QyrfXjmBk9iJD00igd4lbkAKEXAH/zIYoZ0z/Wan4=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
+github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
+github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
+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/gofrs/flock v0.8.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
+github.com/gofrs/uuid v3.2.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
+github.com/gofrs/uuid v4.0.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -122,27 +137,123 @@ github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/jackc/chunkreader v1.0.0 h1:4s39bBR8ByfqH+DKm8rQA3E1LHZWB9XWcrz8fqaZbe0=
+github.com/jackc/chunkreader v1.0.0/go.mod h1:RT6O25fNZIuasFJRyZ4R/Y2BbhasbmZXF9QQ7T3kePo=
+github.com/jackc/chunkreader/v2 v2.0.0/go.mod h1:odVSm741yZoC3dpHEUXIqA9tQRhFrgOHwnPIn9lDKlk=
+github.com/jackc/chunkreader/v2 v2.0.1 h1:i+RDz65UE+mmpjTfyz0MoVTnzeYxroil2G82ki7MGG8=
+github.com/jackc/chunkreader/v2 v2.0.1/go.mod h1:odVSm741yZoC3dpHEUXIqA9tQRhFrgOHwnPIn9lDKlk=
+github.com/jackc/pgconn v0.0.0-20190420214824-7e0022ef6ba3/go.mod h1:jkELnwuX+w9qN5YIfX0fl88Ehu4XC3keFuOJJk9pcnA=
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@@ -158,7 +269,10 @@ github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An
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@@ -169,19 +283,41 @@ github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
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@@ -227,6 +363,7 @@ golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR
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@@ -266,20 +403,27 @@ golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJ
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 golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200212091648-12a6c2dcc1e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -302,8 +446,10 @@ golang.org/x/sys v0.0.0-20210225134936-a50acf3fe073/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210823070655-63515b42dcdf/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220412211240-33da011f77ad h1:ntjMns5wyP/fN65tdBD4g8J5w8n015+iIIs9rtjXkY0=
 golang.org/x/sys v0.0.0-20220412211240-33da011f77ad/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -311,6 +457,8 @@ golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -323,14 +471,18 @@ golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3
 golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
+golang.org/x/tools v0.0.0-20190425163242-31fd60d6bfdc/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190506145303-2d16b83fe98c/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190606124116-d0a3d012864b/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190816200558-6889da9d5479/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20190823170909-c4a336ef6a2f/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20190911174233-4f2ddba30aff/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191113191852-77e3bb0ad9e7/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191115202509-3a792d9c32b2/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
@@ -338,6 +490,7 @@ golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191130070609-6e064ea0cf2d/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191216173652-a0e659d51361/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20191227053925-7b8e75db28f4/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20200103221440-774c71fcf114/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200117161641-43d50277825c/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200122220014-bf1340f18c4a/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
@@ -363,6 +516,8 @@ golang.org/x/tools v0.0.0-20201208233053-a543418bbed2/go.mod h1:emZCQorbCU4vsT4f
 golang.org/x/tools v0.0.0-20210105154028-b0ab187a4818/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210108195828-e2f9c7f1fc8e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
+golang.org/x/xerrors v0.0.0-20190410155217-1f06c39b4373/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 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=
@@ -458,6 +613,7 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 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=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s=
 gopkg.in/ini.v1 v1.66.4 h1:SsAcf+mM7mRZo2nJNGt8mZCjG8ZRaNGMURJw7BsIST4=
 gopkg.in/ini.v1 v1.66.4/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -466,6 +622,9 @@ gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gorm.io/driver/postgres v1.0.8/go.mod h1:4eOzrI1MUfm6ObJU/UcmbXyiHSs8jSwH95G5P5dxcAg=
+gorm.io/gorm v1.20.12/go.mod h1:0HFTzE/SqkGTzK6TlDPPQbAYCluiVvhzoA1+aVyzenw=
+gorm.io/gorm v1.21.4/go.mod h1:0HFTzE/SqkGTzK6TlDPPQbAYCluiVvhzoA1+aVyzenw=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

pkg/dbtools/sql/error.go

@@ -0,0 +1,22 @@
+package sql
+
+import (
+	"fmt"
+)
+
+const (
+	DbConnectionFailedMsg = "db connection failed"
+	SettingNodeFailedMsg  = "unable to set db node"
+)
+
+func ErrDBConnectionFailed(connectErr error) error {
+	return formatError(DbConnectionFailedMsg, connectErr.Error())
+}
+
+func ErrUnableToSetNode(setErr error) error {
+	return formatError(SettingNodeFailedMsg, setErr.Error())
+}
+
+func formatError(msg, err string) error {
+	return fmt.Errorf("%s: %s", msg, err)
+}

pkg/dbtools/sql/interfaces.go

@@ -0,0 +1,54 @@
+package sql
+
+import (
+	"context"
+	"io"
+	"time"
+)
+
+// Database interfaces required by the sql indexer
+type Database interface {
+	Driver
+}
+
+// Driver interface has all the methods required by a driver implementation to support the sql indexer
+type Driver interface {
+	QueryRow(ctx context.Context, sql string, args ...interface{}) ScannableRow
+	Exec(ctx context.Context, sql string, args ...interface{}) (Result, error)
+	Select(ctx context.Context, dest interface{}, query string, args ...interface{}) error
+	Get(ctx context.Context, dest interface{}, query string, args ...interface{}) error
+	Begin(ctx context.Context) (Tx, error)
+	Stats() Stats
+	Context() context.Context
+	io.Closer
+}
+
+// Tx interface to accommodate different concrete SQL transaction types
+type Tx interface {
+	QueryRow(ctx context.Context, sql string, args ...interface{}) ScannableRow
+	Exec(ctx context.Context, sql string, args ...interface{}) (Result, error)
+	Commit(ctx context.Context) error
+	Rollback(ctx context.Context) error
+}
+
+// ScannableRow interface to accommodate different concrete row types
+type ScannableRow interface {
+	Scan(dest ...interface{}) error
+}
+
+// Result interface to accommodate different concrete result types
+type Result interface {
+	RowsAffected() (int64, error)
+}
+
+// Stats interface to accommodate different concrete sql stats types
+type Stats interface {
+	MaxOpen() int64
+	Open() int64
+	InUse() int64
+	Idle() int64
+	WaitCount() int64
+	WaitDuration() time.Duration
+	MaxIdleClosed() int64
+	MaxLifetimeClosed() int64
+}

pkg/dbtools/sql/postgres/config.go

@@ -0,0 +1,75 @@
+package postgres
+
+import (
+	"fmt"
+	"strings"
+	"time"
+)
+
+// DriverType to explicitly type the kind of sql driver we are using
+type DriverType string
+
+const (
+	PGX     DriverType = "PGX"
+	SQLX    DriverType = "SQLX"
+	Unknown DriverType = "Unknown"
+)
+
+// DefaultConfig are default parameters for connecting to a Postgres sql
+var DefaultConfig = Config{
+	Hostname:     "localhost",
+	Port:         8077,
+	DatabaseName: "vulcanize_testing",
+	Username:     "vdbm",
+	Password:     "password",
+}
+
+// ResolveDriverType resolves a DriverType from a provided string
+func ResolveDriverType(str string) (DriverType, error) {
+	switch strings.ToLower(str) {
+	case "pgx", "pgxpool":
+		return PGX, nil
+	case "sqlx":
+		return SQLX, nil
+	default:
+		return Unknown, fmt.Errorf("unrecognized driver type string: %s", str)
+	}
+}
+
+// Config holds params for a Postgres db
+type Config struct {
+	// conn string params
+	Hostname     string
+	Port         int
+	DatabaseName string
+	Username     string
+	Password     string
+
+	// conn settings
+	MaxConns        int
+	MaxIdle         int
+	MinConns        int
+	MaxConnIdleTime time.Duration
+	MaxConnLifetime time.Duration
+	ConnTimeout     time.Duration
+
+	// node info params
+	ID         string
+	ClientName string
+
+	// driver type
+	Driver DriverType
+}
+
+// DbConnectionString constructs and returns the connection string from the config
+func (c Config) DbConnectionString() string {
+	if len(c.Username) > 0 && len(c.Password) > 0 {
+		return fmt.Sprintf("postgresql://%s:%s@%s:%d/%s?sslmode=disable",
+			c.Username, c.Password, c.Hostname, c.Port, c.DatabaseName)
+	}
+	if len(c.Username) > 0 && len(c.Password) == 0 {
+		return fmt.Sprintf("postgresql://%s@%s:%d/%s?sslmode=disable",
+			c.Username, c.Hostname, c.Port, c.DatabaseName)
+	}
+	return fmt.Sprintf("postgresql://%s:%d/%s?sslmode=disable", c.Hostname, c.Port, c.DatabaseName)
+}

pkg/dbtools/sql/postgres/pgx.go

@@ -0,0 +1,190 @@
+package postgres
+
+import (
+	"context"
+	"time"
+
+	"github.com/georgysavva/scany/pgxscan"
+	"github.com/jackc/pgconn"
+	"github.com/jackc/pgx/v4"
+	"github.com/jackc/pgx/v4/pgxpool"
+	"github.com/vulcanize/ipld-ethcl-indexer/pkg/dbtools/sql"
+)
+
+// PGXDriver driver, implements sql.Driver
+type PGXDriver struct {
+	ctx  context.Context
+	pool *pgxpool.Pool
+}
+
+// NewPGXDriver returns a new pgx driver.
+// It initializes the connection pool.
+func NewPGXDriver(ctx context.Context, config Config) (*PGXDriver, error) {
+	pgConf, err := MakeConfig(config)
+	if err != nil {
+		return nil, err
+	}
+	dbPool, err := pgxpool.ConnectConfig(ctx, pgConf)
+	if err != nil {
+		return nil, sql.ErrDBConnectionFailed(err)
+	}
+	pg := &PGXDriver{ctx: ctx, pool: dbPool}
+	return pg, nil
+}
+
+// MakeConfig creates a pgxpool.Config from the provided Config
+func MakeConfig(config Config) (*pgxpool.Config, error) {
+	conf, err := pgxpool.ParseConfig("")
+	if err != nil {
+		return nil, err
+	}
+
+	//conf.ConnConfig.BuildStatementCache = nil
+	conf.ConnConfig.Config.Host = config.Hostname
+	conf.ConnConfig.Config.Port = uint16(config.Port)
+	conf.ConnConfig.Config.Database = config.DatabaseName
+	conf.ConnConfig.Config.User = config.Username
+	conf.ConnConfig.Config.Password = config.Password
+
+	if config.ConnTimeout != 0 {
+		conf.ConnConfig.Config.ConnectTimeout = config.ConnTimeout
+	}
+	if config.MaxConns != 0 {
+		conf.MaxConns = int32(config.MaxConns)
+	}
+	if config.MinConns != 0 {
+		conf.MinConns = int32(config.MinConns)
+	}
+	if config.MaxConnLifetime != 0 {
+		conf.MaxConnLifetime = config.MaxConnLifetime
+	}
+	if config.MaxConnIdleTime != 0 {
+		conf.MaxConnIdleTime = config.MaxConnIdleTime
+	}
+	return conf, nil
+}
+
+// QueryRow satisfies sql.Database
+func (pgx *PGXDriver) QueryRow(ctx context.Context, sql string, args ...interface{}) sql.ScannableRow {
+	return pgx.pool.QueryRow(ctx, sql, args...)
+}
+
+// Exec satisfies sql.Database
+func (pgx *PGXDriver) Exec(ctx context.Context, sql string, args ...interface{}) (sql.Result, error) {
+	res, err := pgx.pool.Exec(ctx, sql, args...)
+	return resultWrapper{ct: res}, err
+}
+
+// Select satisfies sql.Database
+func (pgx *PGXDriver) Select(ctx context.Context, dest interface{}, query string, args ...interface{}) error {
+	return pgxscan.Select(ctx, pgx.pool, dest, query, args...)
+}
+
+// Get satisfies sql.Database
+func (pgx *PGXDriver) Get(ctx context.Context, dest interface{}, query string, args ...interface{}) error {
+	return pgxscan.Get(ctx, pgx.pool, dest, query, args...)
+}
+
+// Begin satisfies sql.Database
+func (pgx *PGXDriver) Begin(ctx context.Context) (sql.Tx, error) {
+	tx, err := pgx.pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return pgxTxWrapper{tx: tx}, nil
+}
+
+func (pgx *PGXDriver) Stats() sql.Stats {
+	stats := pgx.pool.Stat()
+	return pgxStatsWrapper{stats: stats}
+}
+
+// Close satisfies sql.Database/io.Closer
+func (pgx *PGXDriver) Close() error {
+	pgx.pool.Close()
+	return nil
+}
+
+// Context satisfies sql.Database
+func (pgx *PGXDriver) Context() context.Context {
+	return pgx.ctx
+}
+
+type resultWrapper struct {
+	ct pgconn.CommandTag
+}
+
+// RowsAffected satisfies sql.Result
+func (r resultWrapper) RowsAffected() (int64, error) {
+	return r.ct.RowsAffected(), nil
+}
+
+type pgxStatsWrapper struct {
+	stats *pgxpool.Stat
+}
+
+// MaxOpen satisfies sql.Stats
+func (s pgxStatsWrapper) MaxOpen() int64 {
+	return int64(s.stats.MaxConns())
+}
+
+// Open satisfies sql.Stats
+func (s pgxStatsWrapper) Open() int64 {
+	return int64(s.stats.TotalConns())
+}
+
+// InUse satisfies sql.Stats
+func (s pgxStatsWrapper) InUse() int64 {
+	return int64(s.stats.AcquiredConns())
+}
+
+// Idle satisfies sql.Stats
+func (s pgxStatsWrapper) Idle() int64 {
+	return int64(s.stats.IdleConns())
+}
+
+// WaitCount satisfies sql.Stats
+func (s pgxStatsWrapper) WaitCount() int64 {
+	return s.stats.EmptyAcquireCount()
+}
+
+// WaitDuration satisfies sql.Stats
+func (s pgxStatsWrapper) WaitDuration() time.Duration {
+	return s.stats.AcquireDuration()
+}
+
+// MaxIdleClosed satisfies sql.Stats
+func (s pgxStatsWrapper) MaxIdleClosed() int64 {
+	// this stat isn't supported by pgxpool, but we don't want to panic
+	return 0
+}
+
+// MaxLifetimeClosed satisfies sql.Stats
+func (s pgxStatsWrapper) MaxLifetimeClosed() int64 {
+	return s.stats.CanceledAcquireCount()
+}
+
+type pgxTxWrapper struct {
+	tx pgx.Tx
+}
+
+// QueryRow satisfies sql.Tx
+func (t pgxTxWrapper) QueryRow(ctx context.Context, sql string, args ...interface{}) sql.ScannableRow {
+	return t.tx.QueryRow(ctx, sql, args...)
+}
+
+// Exec satisfies sql.Tx
+func (t pgxTxWrapper) Exec(ctx context.Context, sql string, args ...interface{}) (sql.Result, error) {
+	res, err := t.tx.Exec(ctx, sql, args...)
+	return resultWrapper{ct: res}, err
+}
+
+// Commit satisfies sql.Tx
+func (t pgxTxWrapper) Commit(ctx context.Context) error {
+	return t.tx.Commit(ctx)
+}
+
+// Rollback satisfies sql.Tx
+func (t pgxTxWrapper) Rollback(ctx context.Context) error {
+	return t.tx.Rollback(ctx)
+}

pkg/dbtools/sql/postgres/pgx_test.go

@@ -0,0 +1,89 @@
+package postgres
+
+import (
+	"context"
+	"math/big"
+	"strings"
+	"testing"
+
+	"github.com/jackc/pgx/v4/pgxpool"
+	"github.com/vulcanize/ipld-ethcl-indexer/pkg/dbtools/sql"
+	"github.com/vulcanize/ipld-ethcl-indexer/pkg/testhelpers"
+)
+
+var (
+	pgConfig, _ = MakeConfig(DefaultConfig)
+	ctx         = context.Background()
+)
+
+func expectContainsSubstring(t *testing.T, full string, sub string) {
+	if !strings.Contains(full, sub) {
+		t.Fatalf("Expected \"%v\" to contain substring \"%v\"\n", full, sub)
+	}
+}
+
+func TestPostgresPGX(t *testing.T) {
+	t.Run("connects to the sql", func(t *testing.T) {
+		dbPool, err := pgxpool.ConnectConfig(context.Background(), pgConfig)
+		if err != nil {
+			t.Fatalf("failed to connect to db with connection string: %s err: %v", pgConfig.ConnString(), err)
+		}
+		if dbPool == nil {
+			t.Fatal("DB pool is nil")
+		}
+		dbPool.Close()
+	})
+
+	t.Run("serializes big.Int to db", func(t *testing.T) {
+		// postgres driver doesn't support go big.Int type
+		// various casts in golang uint64, int64, overflow for
+		// transaction value (in wei) even though
+		// postgres numeric can handle an arbitrary
+		// sized int, so use string representation of big.Int
+		// and cast on insert
+
+		dbPool, err := pgxpool.ConnectConfig(context.Background(), pgConfig)
+		if err != nil {
+			t.Fatalf("failed to connect to db with connection string: %s err: %v", pgConfig.ConnString(), err)
+		}
+		defer dbPool.Close()
+
+		bi := new(big.Int)
+		bi.SetString("34940183920000000000", 10)
+		testhelpers.ExpectEqual(t, bi.String(), "34940183920000000000")
+
+		defer dbPool.Exec(ctx, `DROP TABLE IF EXISTS example`)
+		_, err = dbPool.Exec(ctx, "CREATE TABLE example ( id INTEGER, data NUMERIC )")
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		sqlStatement := `
+			INSERT INTO example (id, data)
+			VALUES (1, cast($1 AS NUMERIC))`
+		_, err = dbPool.Exec(ctx, sqlStatement, bi.String())
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		var data string
+		err = dbPool.QueryRow(ctx, `SELECT cast(data AS TEXT) FROM example WHERE id = 1`).Scan(&data)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		testhelpers.ExpectEqual(t, data, bi.String())
+		actual := new(big.Int)
+		actual.SetString(data, 10)
+		testhelpers.ExpectEqual(t, actual, bi)
+	})
+
+	t.Run("throws error when can't connect to the database", func(t *testing.T) {
+		_, err := NewPGXDriver(ctx, Config{})
+		if err == nil {
+			t.Fatal("Expected an error")
+		}
+
+		expectContainsSubstring(t, err.Error(), sql.DbConnectionFailedMsg)
+	})
+}

pkg/testhelpers/testhelper.go

@@ -0,0 +1,23 @@
+package testhelpers
+
+import (
+	"reflect"
+	"testing"
+)
+
+// ExpectEqual asserts the provided interfaces are deep equal
+func ExpectEqual(t *testing.T, got interface{}, want interface{}) {
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("Expected: %v\nActual: %v", want, got)
+	}
+}
+
+// ListContainsString used to check if a list of strings contains a particular string
+func ListContainsString(sss []string, s string) bool {
+	for _, str := range sss {
+		if s == str {
+			return true
+		}
+	}
+	return false
+}