fix: add postgres backend

changes:
- Add postgres backend
- Modified or added table attributes.
  UpdateDate, ForeignKeys, Booleans
- Fix test for sqlite and postgres. Compare json instead the struct.

Makefile

@@ -159,6 +159,7 @@ container-run:
 	${CONTAINER_RUNTIME} run \
 		--rm \
 		--volume ${PWD}:/workspace \
+		--volume /var/run/docker.sock:/var/run/docker.sock \
 		docker.io/volkerraschek/build-image:latest \
 			make ${COMMAND} \
 				GOPROXY=${GOPROXY} \

go.mod

@@ -1,6 +1,6 @@
 module github.com/volker-raschek/flucky
 
-go 1.12
+go 1.14
 
 require (
 	github.com/Masterminds/semver v1.5.0
@@ -12,11 +12,11 @@ require (
 	github.com/docker/go-connections v0.4.0
 	github.com/docker/go-units v0.4.0 // indirect
 	github.com/go-flucky/go-dht v0.1.1
-	github.com/lib/pq v1.4.0
-	github.com/mattn/go-sqlite3 v1.10.0
+	github.com/lib/pq v1.6.0
+	github.com/mattn/go-sqlite3 v2.0.3+incompatible
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/satori/go.uuid v1.2.0
 	github.com/spf13/cobra v1.0.0
-	github.com/stretchr/testify v1.5.1
+	github.com/stretchr/testify v1.6.0
 	github.com/volker-raschek/go-logger v0.1.0
 )

go.sum

@@ -5,6 +5,8 @@ github.com/Masterminds/semver v1.5.0/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF0
 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/alexbrainman/sspi v0.0.0-20180613141037-e580b900e9f5 h1:P5U+E4x5OkVEKQDklVPmzs71WM56RTTRqV4OrDC//Y4=
+github.com/alexbrainman/sspi v0.0.0-20180613141037-e580b900e9f5/go.mod h1:976q2ETgjT2snVCf2ZaBnyBbVoPERGjUz+0sofzEfro=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 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=
@@ -56,13 +58,29 @@ github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5y
 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/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
+github.com/gorilla/sessions v1.2.0/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM=
 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/go-uuid v1.0.2 h1:cfejS+Tpcp13yd5nYHWDI6qVCny6wyX2Mt5SGur2IGE=
+github.com/hashicorp/go-uuid v1.0.2/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/jcmturner/aescts/v2 v2.0.0 h1:9YKLH6ey7H4eDBXW8khjYslgyqG2xZikXP0EQFKrle8=
+github.com/jcmturner/aescts/v2 v2.0.0/go.mod h1:AiaICIRyfYg35RUkr8yESTqvSy7csK90qZ5xfvvsoNs=
+github.com/jcmturner/dnsutils/v2 v2.0.0 h1:lltnkeZGL0wILNvrNiVCR6Ro5PGU/SeBvVO/8c/iPbo=
+github.com/jcmturner/dnsutils/v2 v2.0.0/go.mod h1:b0TnjGOvI/n42bZa+hmXL+kFJZsFT7G4t3HTlQ184QM=
+github.com/jcmturner/gofork v1.0.0 h1:J7uCkflzTEhUZ64xqKnkDxq3kzc96ajM1Gli5ktUem8=
+github.com/jcmturner/gofork v1.0.0/go.mod h1:MK8+TM0La+2rjBD4jE12Kj1pCCxK7d2LK/UM3ncEo0o=
+github.com/jcmturner/goidentity/v6 v6.0.1 h1:VKnZd2oEIMorCTsFBnJWbExfNN7yZr3EhJAxwOkZg6o=
+github.com/jcmturner/goidentity/v6 v6.0.1/go.mod h1:X1YW3bgtvwAXju7V3LCIMpY0Gbxyjn/mY9zx4tFonSg=
+github.com/jcmturner/gokrb5/v8 v8.2.0 h1:lzPl/30ZLkTveYsYZPKMcgXc8MbnE6RsTd4F9KgiLtk=
+github.com/jcmturner/gokrb5/v8 v8.2.0/go.mod h1:T1hnNppQsBtxW0tCHMHTkAt8n/sABdzZgZdoFrZaZNM=
+github.com/jcmturner/rpc/v2 v2.0.2 h1:gMB4IwRXYsWw4Bc6o/az2HJgFUA1ffSh90i26ZJ6Xl0=
+github.com/jcmturner/rpc/v2 v2.0.2/go.mod h1:VUJYCIDm3PVOEHw8sgt091/20OJjskO/YJki3ELg/Hc=
 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/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
@@ -76,9 +94,14 @@ 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 v1.4.0 h1:TmtCFbH+Aw0AixwyttznSMQDgbR5Yed/Gg6S8Funrhc=
 github.com/lib/pq v1.4.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
+github.com/lib/pq v1.6.0 h1:I5DPxhYJChW9KYc66se+oKFFQX6VuQrKiprsX6ivRZc=
+github.com/lib/pq v1.6.0/go.mod h1:4vXEAYvW1fRQ2/FhZ78H73A60MHw1geSm145z2mdY1g=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mattn/go-sqlite3 v1.10.0 h1:jbhqpg7tQe4SupckyijYiy0mJJ/pRyHvXf7JdWK860o=
 github.com/mattn/go-sqlite3 v1.10.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
+github.com/mattn/go-sqlite3 v1.13.0 h1:LnJI81JidiW9r7pS/hXe6cFeO5EXNq7KbfvoJLRI69c=
+github.com/mattn/go-sqlite3 v2.0.3+incompatible h1:gXHsfypPkaMZrKbD5209QV9jbUTJKjyR5WD3HYQSd+U=
+github.com/mattn/go-sqlite3 v2.0.3+incompatible/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
@@ -122,6 +145,7 @@ github.com/stianeikeland/go-rpio v4.2.0+incompatible h1:CUOlIxdJdT+H1obJPsmg8byu
 github.com/stianeikeland/go-rpio v4.2.0+incompatible/go.mod h1:Sh81rdJwD96E2wja2Gd7rrKM+XZ9LrwvN2w4IXrqLR8=
 github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
 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=
@@ -129,6 +153,8 @@ github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJy
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/stretchr/testify v1.6.0 h1:jlIyCplCJFULU/01vCkhKuTyc3OorI3bJFuw6obfgho=
+github.com/stretchr/testify v1.6.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 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/volker-raschek/go-logger v0.1.0 h1:BJPK4wCfcWlQYnOQC7ORU4LlMSgEYcwvpXQFs2rdPhE=
@@ -141,14 +167,20 @@ go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/
 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 v0.0.0-20200117160349-530e935923ad/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20200311171314-f7b00557c8c4 h1:QmwruyY+bKbDDL0BaglrbZABEali68eoMFhTZpCjYVA=
+golang.org/x/crypto v0.0.0-20200311171314-f7b00557c8c4/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/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 h1:4QSRKanuywn15aTZvI/mIDEgPQpswuFndXpOj3rKEco=
 golang.org/x/net v0.0.0-20190522155817-f3200d17e092/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
+golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa h1:F+8P+gmewFQYRk6JoLQLwjBCTu3mcIURZfNkVweuRKA=
+golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa/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=
@@ -158,6 +190,7 @@ golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5h
 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/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=
@@ -171,11 +204,18 @@ gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLks
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/jcmturner/aescts.v1 v1.0.1/go.mod h1:nsR8qBOg+OucoIW+WMhB3GspUQXq9XorLnQb9XtvcOo=
+gopkg.in/jcmturner/dnsutils.v1 v1.0.1/go.mod h1:m3v+5svpVOhtFAP/wSz+yzh4Mc0Fg7eRhxkJMWSIz9Q=
+gopkg.in/jcmturner/goidentity.v3 v3.0.0/go.mod h1:oG2kH0IvSYNIu80dVAyu/yoefjq1mNfM5bm88whjWx4=
+gopkg.in/jcmturner/gokrb5.v7 v7.5.0/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuvyavf11/WM=
+gopkg.in/jcmturner/rpc.v1 v1.1.0/go.mod h1:YIdkC4XfD6GXbzje11McwsDuOlZQSb9W4vfLvuNnlv8=
 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=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 periph.io/x/periph v3.4.0+incompatible h1:5gzxE4ryPq52cdqSw0mErR6pyJK8cBF2qdUAcOWh0bo=
 periph.io/x/periph v3.4.0+incompatible/go.mod h1:EWr+FCIU2dBWz5/wSWeiIUJTriYv9v2j2ENBmgYyy7Y=

pkg/repository/db/db.go

@@ -52,6 +52,7 @@ func New(dsnURL *url.URL, flogger logger.Logger) (Database, error) {
 	// Load Queryfiles
 	queries := make(map[string]string, 0)
 	for _, asset := range AssetNames() {
+
 		if !strings.Contains(asset, dsnURL.Scheme) {
 			continue
 		}
@@ -72,17 +73,19 @@ func New(dsnURL *url.URL, flogger logger.Logger) (Database, error) {
 	)
 
 	switch dsnURL.Scheme {
-	// case "postgres":
-	// 	// postgres://[user]:[password]@[host]:[port]/[path]?[query]
-	// 	newDBO, err := sql.Open(storageEndpoint.Scheme, storageEndpoint.String())
-	// 	if err != nil {
-	// 		return nil, err
-	// 	}
+	case "postgres":
 
-	// 	return &Postgres{
-	// 		dbo:     newDBO,
-	// 		flogger: flogger,
-	// 	}, nil
+		// postgres://[user]:[password]@[host]:[port]/[path]?[query]
+		newDBO, err := sql.Open(dsnURL.Scheme, dsnURL.String())
+		if err != nil {
+			return nil, err
+		}
+
+		database = &Postgres{
+			dbo:     newDBO,
+			flogger: flogger,
+			queries: queries,
+		}
 
 	case "sqlite3":
 

pkg/repository/db/postgres.go

@@ -4,32 +4,27 @@ import (
 	"context"
 	"database/sql"
 	"fmt"
-	"path/filepath"
+	"time"
 
 	_ "github.com/lib/pq"
-
 	"github.com/volker-raschek/flucky/pkg/types"
 	"github.com/volker-raschek/go-logger/pkg/logger"
 )
 
-var (
-	postgresAssetPath = "pkg/storage/postgres"
-)
-
 // Postgres implementation
 type Postgres struct {
 	dbo     *sql.DB
 	flogger logger.Logger
+	queries map[string]string
 }
 
 // DeleteDevices from the database
 func (postgres *Postgres) DeleteDevices(ctx context.Context, deviceIDs ...string) error {
-	asset := filepath.Join(postgresAssetPath, "deleteDevice.sql")
-	queryBytes, err := Asset(asset)
-	if err != nil {
-		return fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	queryFile := "deleteDevice.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
 	}
-	query := string(queryBytes)
 
 	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
 	if err != nil {
@@ -55,12 +50,11 @@ func (postgres *Postgres) DeleteDevices(ctx context.Context, deviceIDs ...string
 
 // DeleteSensors from the database
 func (postgres *Postgres) DeleteSensors(ctx context.Context, sensorIDs ...string) error {
-	asset := filepath.Join(postgresAssetPath, "deleteSensor.sql")
-	queryBytes, err := Asset(asset)
-	if err != nil {
-		return fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	queryFile := "deleteSensor.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
 	}
-	query := string(queryBytes)
 
 	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
 	if err != nil {
@@ -86,12 +80,11 @@ func (postgres *Postgres) DeleteSensors(ctx context.Context, sensorIDs ...string
 
 // InsertDevices into the database
 func (postgres *Postgres) InsertDevices(ctx context.Context, devices ...*types.Device) error {
-	asset := filepath.Join(postgresAssetPath, "insertDevice.sql")
-	queryBytes, err := Asset(asset)
-	if err != nil {
-		return fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	queryFile := "insertDevice.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
 	}
-	query := string(queryBytes)
 
 	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
 	if err != nil {
@@ -105,7 +98,7 @@ func (postgres *Postgres) InsertDevices(ctx context.Context, devices ...*types.D
 	defer stmt.Close()
 
 	for _, device := range devices {
-		_, err = stmt.Exec(&device.ID, &device.Name, &device.Location, &device.CreationDate)
+		_, err = stmt.Exec(&device.ID, &device.Name, &device.Location, &device.CreationDate, &device.UpdateDate)
 		if err != nil {
 			tx.Rollback()
 			return fmt.Errorf("Failed to execute statement: %v", err)
@@ -132,12 +125,11 @@ func (postgres *Postgres) InsertMeasuredValues(ctx context.Context, measuredValu
 	}
 
 	// General insert function
-	insert := func(tx *sql.Tx, asset string, measuredValues []*types.MeasuredValue) error {
-		queryBytes, err := Asset(asset)
-		if err != nil {
-			return fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	insert := func(tx *sql.Tx, queryFile string, measuredValues []*types.MeasuredValue) error {
+		query, present := postgres.queries[queryFile]
+		if !present {
+			return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
 		}
-		query := string(queryBytes)
 
 		stmt, err := tx.Prepare(query)
 		if err != nil {
@@ -146,7 +138,15 @@ func (postgres *Postgres) InsertMeasuredValues(ctx context.Context, measuredValu
 		defer stmt.Close()
 
 		for _, measuredValue := range measuredValues {
-			_, err := stmt.Exec(&measuredValue.ID, &measuredValue.Value, &measuredValue.SensorID, &measuredValue.CreationDate)
+			_, err := stmt.Exec(
+				&measuredValue.ID,
+				&measuredValue.Value,
+				&measuredValue.Date,
+				&measuredValue.SensorID,
+				&measuredValue.CreationDate,
+				&measuredValue.UpdateDate,
+			)
+
 			if err != nil {
 				return fmt.Errorf("Failed to execute statement: %v", err)
 			}
@@ -156,21 +156,21 @@ func (postgres *Postgres) InsertMeasuredValues(ctx context.Context, measuredValu
 	}
 
 	for measuredValueType, measuredValues := range splittedMeasuredValues {
-		var asset string
+		var queryFile string
 
 		switch measuredValueType {
 		case "humidity":
-			asset = filepath.Join(postgresAssetPath, "insertHumidity.sql")
+			queryFile = "insertHumidity.sql"
 		case "pressure":
-			asset = filepath.Join(postgresAssetPath, "insertPressure.sql")
+			queryFile = "insertPressure.sql"
 		case "temperature":
-			asset = filepath.Join(postgresAssetPath, "insertTemperature.sql")
+			queryFile = "insertTemperature.sql"
 		default:
 			tx.Rollback()
 			return fmt.Errorf("Measured value type %v not supported", measuredValueType)
 		}
 
-		err := insert(tx, asset, measuredValues)
+		err := insert(tx, queryFile, measuredValues)
 		if err != nil {
 			tx.Rollback()
 			return err
@@ -182,12 +182,11 @@ func (postgres *Postgres) InsertMeasuredValues(ctx context.Context, measuredValu
 
 // InsertSensors into the database
 func (postgres *Postgres) InsertSensors(ctx context.Context, sensors ...*types.Sensor) error {
-	asset := filepath.Join(postgresAssetPath, "insertSensor.sql")
-	queryBytes, err := Asset(asset)
-	if err != nil {
-		return fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	queryFile := "insertSensor.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
 	}
-	query := string(queryBytes)
 
 	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
 	if err != nil {
@@ -201,7 +200,21 @@ func (postgres *Postgres) InsertSensors(ctx context.Context, sensors ...*types.S
 	defer stmt.Close()
 
 	for _, sensor := range sensors {
-		_, err = stmt.Exec(&sensor.ID, &sensor.Name, &sensor.Location, &sensor.WireID, &sensor.I2CBus, &sensor.I2CAddress, &sensor.GPIONumber, &sensor.Model, &sensor.Enabled, &sensor.DeviceID, &sensor.CreationDate)
+		_, err = stmt.Exec(
+			&sensor.ID,
+			&sensor.Name,
+			&sensor.Location,
+			&sensor.WireID,
+			&sensor.I2CBus,
+			&sensor.I2CAddress,
+			&sensor.GPIONumber,
+			&sensor.Model,
+			&sensor.Enabled,
+			&sensor.TickDuration,
+			&sensor.DeviceID,
+			&sensor.CreationDate,
+			&sensor.UpdateDate,
+		)
 		if err != nil {
 			tx.Rollback()
 			return fmt.Errorf("Failed to execute statement: %v", err)
@@ -211,75 +224,69 @@ func (postgres *Postgres) InsertSensors(ctx context.Context, sensors ...*types.S
 	return tx.Commit()
 }
 
+// Scheme creates all required tables if not exist
+func (postgres *Postgres) Scheme(ctx context.Context) error {
+	for _, query := range []string{
+		postgres.queries["createTableDevices.sql"],
+		postgres.queries["createTableSensors.sql"],
+		postgres.queries["createTableHumidites.sql"],
+		postgres.queries["createTablePressures.sql"],
+		postgres.queries["createTableTemperatures.sql"],
+	} {
+		_, err := postgres.dbo.ExecContext(ctx, query)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 // SelectDevice from database
 func (postgres *Postgres) SelectDevice(ctx context.Context, id string) (*types.Device, error) {
-	asset := filepath.Join(postgresAssetPath, "selectDevice.sql")
-	queryBytes, err := Asset(asset)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	queryFile := "selectDevice.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
 	}
-	query := string(queryBytes)
 
 	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
 	if err != nil {
 		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
 	}
 
-	stmt, err := tx.Prepare(query)
+	devices, err := postgres.selectDevices(tx, query, id)
 	if err != nil {
-		return nil, fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	row := stmt.QueryRow(id)
-
-	device := new(types.Device)
-	err = row.Scan(&device.ID, &device.Name, &device.Location, &device.CreationDate)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to scan row: %v", err)
+		return nil, err
 	}
 
 	err = tx.Commit()
 	if err != nil {
-		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
+		return nil, err
 	}
 
-	return device, nil
+	if len(devices) == 0 {
+		return nil, nil
+	}
+
+	return devices[0], nil
 }
 
 // SelectDevices from the database
 func (postgres *Postgres) SelectDevices(ctx context.Context) ([]*types.Device, error) {
-	asset := filepath.Join(postgresAssetPath, "selectDevices.sql")
-	queryBytes, err := Asset(asset)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	queryFile := "selectDevices.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
 	}
-	query := string(queryBytes)
 
 	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
 	if err != nil {
 		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
 	}
 
-	stmt, err := tx.Prepare(query)
+	devices, err := postgres.selectDevices(tx, query)
 	if err != nil {
-		return nil, fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	rows, err := stmt.Query()
-	if err != nil {
-		return nil, fmt.Errorf("Failed to query statement: %v", err)
-	}
-
-	devices := make([]*types.Device, 0)
-	for rows.Next() {
-		device := new(types.Device)
-		err = rows.Scan(&device.ID, &device.Name, &device.Location, &device.CreationDate)
-		if err != nil {
-			return nil, fmt.Errorf("Failed to scan row: %v", err)
-		}
-		devices = append(devices, device)
+		return nil, err
 	}
 
 	err = tx.Commit()
@@ -290,32 +297,218 @@ func (postgres *Postgres) SelectDevices(ctx context.Context) ([]*types.Device, e
 	return devices, nil
 }
 
-// SelectSensor from database
-func (postgres *Postgres) SelectSensor(ctx context.Context, id string) (*types.Sensor, error) {
-	asset := filepath.Join(postgresAssetPath, "selectSensor.sql")
-	queryBytes, err := Asset(asset)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to load asset %v: %v", asset, err)
-	}
-	query := string(queryBytes)
-
-	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-	if err != nil {
-		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
-	}
-
+func (postgres *Postgres) selectDevices(tx *sql.Tx, query string, args ...interface{}) ([]*types.Device, error) {
 	stmt, err := tx.Prepare(query)
 	if err != nil {
 		return nil, fmt.Errorf("Failed to prepare statement: %v", err)
 	}
 	defer stmt.Close()
 
-	row := stmt.QueryRow(id)
-
-	sensor := new(types.Sensor)
-	err = row.Scan(&sensor.ID, &sensor.Name, &sensor.Location, &sensor.WireID, &sensor.I2CBus, &sensor.I2CAddress, &sensor.GPIONumber, &sensor.Model, &sensor.Enabled, &sensor.DeviceID, &sensor.CreationDate)
+	rows, err := stmt.Query(args...)
 	if err != nil {
-		return nil, fmt.Errorf("Failed to scan row: %v", err)
+		return nil, fmt.Errorf("Failed to query statement: %v", err)
+	}
+
+	devices := make([]*types.Device, 0)
+	for rows.Next() {
+		device := new(types.Device)
+		err = rows.Scan(
+			&device.ID,
+			&device.Name,
+			&device.Location,
+			&device.CreationDate,
+			&device.UpdateDate,
+		)
+		if err != nil {
+			return nil, fmt.Errorf("Failed to scan row: %v", err)
+		}
+		devices = append(devices, device)
+	}
+
+	return devices, nil
+}
+
+// SelectHumidity returns humidity from the database
+func (postgres *Postgres) SelectHumidity(ctx context.Context, id string) (*types.MeasuredValue, error) {
+	queryFile := "selectHumidity.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
+	}
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
+	if err != nil {
+		return nil, err
+	}
+
+	measuredValues, err := postgres.selectMeasuredValue(tx, query, id)
+	if err != nil {
+		return nil, err
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return nil, err
+	}
+
+	if measuredValues == nil {
+		return nil, nil
+	}
+
+	for _, measuredValue := range measuredValues {
+		measuredValue.ValueType = "humidity"
+	}
+
+	return measuredValues[0], nil
+}
+
+// SelectHumidities returns humidities from the database
+func (postgres *Postgres) SelectHumidities(ctx context.Context) ([]*types.MeasuredValue, error) {
+	queryFile := "selectHumidities.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
+	}
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
+	if err != nil {
+		return nil, err
+	}
+
+	measuredValues, err := postgres.selectMeasuredValue(tx, query, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, measuredValue := range measuredValues {
+		measuredValue.ValueType = "humidity"
+	}
+
+	return measuredValues, nil
+}
+
+func (postgres *Postgres) selectMeasuredValue(tx *sql.Tx, query string, args ...interface{}) ([]*types.MeasuredValue, error) {
+	stmt, err := tx.Prepare(query)
+	if err != nil {
+		tx.Rollback()
+		return nil, err
+	}
+	defer stmt.Close()
+
+	rows, err := stmt.Query(args...)
+	if err != nil {
+		tx.Rollback()
+		return nil, err
+	}
+
+	measuredValues := make([]*types.MeasuredValue, 0)
+	for rows.Next() {
+		measuredValue := new(types.MeasuredValue)
+		err := rows.Scan(
+			&measuredValue.ID,
+			&measuredValue.Value,
+			&measuredValue.SensorID,
+			&measuredValue.Date,
+			&measuredValue.CreationDate,
+			&measuredValue.UpdateDate,
+		)
+
+		if err != nil {
+			tx.Rollback()
+			return nil, err
+		}
+
+		measuredValues = append(measuredValues, measuredValue)
+	}
+
+	return measuredValues, nil
+}
+
+// SelectPressure returns pressure from the database
+func (postgres *Postgres) SelectPressure(ctx context.Context, id string) (*types.MeasuredValue, error) {
+	queryFile := "selectPressure.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
+	}
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
+	if err != nil {
+		return nil, err
+	}
+
+	measuredValues, err := postgres.selectMeasuredValue(tx, query, id)
+	if err != nil {
+		return nil, err
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return nil, err
+	}
+
+	if measuredValues == nil {
+		return nil, nil
+	}
+
+	for _, measuredValue := range measuredValues {
+		measuredValue.ValueType = "pressure"
+	}
+
+	return measuredValues[0], nil
+}
+
+// SelectPressures returns pressure from the database
+func (postgres *Postgres) SelectPressures(ctx context.Context) ([]*types.MeasuredValue, error) {
+	queryFile := "selectPressures.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
+	}
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
+	if err != nil {
+		return nil, err
+	}
+
+	measuredValues, err := postgres.selectMeasuredValue(tx, query, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, measuredValue := range measuredValues {
+		measuredValue.ValueType = "pressure"
+	}
+
+	return measuredValues, nil
+}
+
+// SelectSensor from database
+func (postgres *Postgres) SelectSensor(ctx context.Context, id string) (*types.Sensor, error) {
+	queryFile := "selectSensor.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
+	}
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
+	if err != nil {
+		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
+	}
+
+	sensors, err := postgres.selectSensors(tx, query, id)
+	if err != nil {
+		return nil, err
 	}
 
 	err = tx.Commit()
@@ -323,42 +516,29 @@ func (postgres *Postgres) SelectSensor(ctx context.Context, id string) (*types.S
 		return nil, fmt.Errorf("Failed to commit transaction: %v", err)
 	}
 
-	return sensor, nil
+	if len(sensors) == 0 {
+		return nil, nil
+	}
+
+	return sensors[0], nil
 }
 
 // SelectSensors from the database
 func (postgres *Postgres) SelectSensors(ctx context.Context) ([]*types.Sensor, error) {
-	asset := filepath.Join(postgresAssetPath, "selectSensors.sql")
-	queryBytes, err := Asset(asset)
-	if err != nil {
-		return nil, fmt.Errorf("Failed to load asset %v: %v", asset, err)
+	queryFile := "selectSensors.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
 	}
-	query := string(queryBytes)
 
 	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
 	if err != nil {
 		return nil, fmt.Errorf("Failed to begin new transaction: %v", err)
 	}
 
-	stmt, err := tx.Prepare(query)
+	sensors, err := postgres.selectSensors(tx, query)
 	if err != nil {
-		return nil, fmt.Errorf("Failed to prepare statement: %v", err)
-	}
-	defer stmt.Close()
-
-	rows, err := stmt.Query()
-	if err != nil {
-		return nil, fmt.Errorf("Failed to query statement: %v", err)
-	}
-
-	sensors := make([]*types.Sensor, 0)
-	for rows.Next() {
-		sensor := new(types.Sensor)
-		err = rows.Scan(&sensor.ID, &sensor.Name, &sensor.Location, &sensor.WireID, &sensor.I2CBus, &sensor.I2CAddress, &sensor.GPIONumber, &sensor.Model, &sensor.Enabled, &sensor.DeviceID, &sensor.CreationDate)
-		if err != nil {
-			return nil, fmt.Errorf("Failed to scan row: %v", err)
-		}
-		sensors = append(sensors, sensor)
+		return nil, err
 	}
 
 	err = tx.Commit()
@@ -369,12 +549,193 @@ func (postgres *Postgres) SelectSensors(ctx context.Context) ([]*types.Sensor, e
 	return sensors, nil
 }
 
+func (postgres *Postgres) selectSensors(tx *sql.Tx, query string, args ...interface{}) ([]*types.Sensor, error) {
+	stmt, err := tx.Prepare(query)
+	if err != nil {
+		return nil, fmt.Errorf("Failed to prepare statement: %v", err)
+	}
+	defer stmt.Close()
+
+	rows, err := stmt.Query(args...)
+	if err != nil {
+		return nil, fmt.Errorf("Failed to query statement: %v", err)
+	}
+
+	sensors := make([]*types.Sensor, 0)
+	for rows.Next() {
+		sensor := new(types.Sensor)
+		err = rows.Scan(
+			&sensor.ID,
+			&sensor.Name,
+			&sensor.Location,
+			&sensor.WireID,
+			&sensor.I2CBus,
+			&sensor.I2CAddress,
+			&sensor.GPIONumber,
+			&sensor.Model,
+			&sensor.Enabled,
+			&sensor.TickDuration,
+			&sensor.DeviceID,
+			&sensor.CreationDate,
+			&sensor.UpdateDate,
+		)
+
+		if err != nil {
+			return nil, fmt.Errorf("Failed to scan row: %v", err)
+		}
+		sensors = append(sensors, sensor)
+	}
+
+	return sensors, nil
+}
+
+// SelectTemperature returns temperatures from the database
+func (postgres *Postgres) SelectTemperature(ctx context.Context, id string) (*types.MeasuredValue, error) {
+	queryFile := "selectTemperature.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
+	}
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
+	if err != nil {
+		return nil, err
+	}
+
+	measuredValues, err := postgres.selectMeasuredValue(tx, query, id)
+	if err != nil {
+		return nil, err
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return nil, err
+	}
+
+	if measuredValues == nil {
+		return nil, nil
+	}
+
+	for _, measuredValue := range measuredValues {
+		measuredValue.ValueType = "temperatures"
+	}
+
+	return measuredValues[0], nil
+}
+
+// SelectTemperatures returns temperatures from the database
+func (postgres *Postgres) SelectTemperatures(ctx context.Context) ([]*types.MeasuredValue, error) {
+	queryFile := "selectTemperatures.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return nil, fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
+	}
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
+	if err != nil {
+		return nil, err
+	}
+
+	measuredValues, err := postgres.selectMeasuredValue(tx, query, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, measuredValue := range measuredValues {
+		measuredValue.ValueType = "temperatures"
+	}
+
+	return measuredValues, nil
+}
+
 // UpdateDevices updates a device in the database
 func (postgres *Postgres) UpdateDevices(ctx context.Context, devices ...*types.Device) error {
-	return nil
+	queryFile := "updateDevice.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
+	}
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
+	if err != nil {
+		return err
+	}
+
+	stmt, err := tx.Prepare(query)
+	if err != nil {
+		tx.Rollback()
+		return err
+	}
+	defer stmt.Close()
+
+	for _, device := range devices {
+		now := time.Now()
+		device.UpdateDate = &now
+
+		_, err := stmt.Exec(
+			&device.Name,
+			&device.Location,
+			&device.CreationDate,
+			&device.UpdateDate,
+			&device.ID,
+		)
+		if err != nil {
+			tx.Rollback()
+			return err
+		}
+	}
+
+	return tx.Commit()
 }
 
 // UpdateSensors updates a sensor in the database
-func (postgres *Postgres) UpdateSensors(ctx context.Context, sensor ...*types.Sensor) error {
-	return nil
+func (postgres *Postgres) UpdateSensors(ctx context.Context, sensors ...*types.Sensor) error {
+	queryFile := "updateSensor.sql"
+	query, present := postgres.queries[queryFile]
+	if !present {
+		return fmt.Errorf("SQLite-Backend: File %v not found", queryFile)
+	}
+
+	tx, err := postgres.dbo.BeginTx(ctx, &sql.TxOptions{ReadOnly: false})
+	if err != nil {
+		return err
+	}
+
+	stmt, err := tx.Prepare(query)
+	if err != nil {
+		tx.Rollback()
+		return err
+	}
+	defer stmt.Close()
+
+	for _, sensor := range sensors {
+		now := time.Now()
+		sensor.UpdateDate = &now
+		_, err := stmt.Exec(
+			&sensor.Name,
+			&sensor.Location,
+			&sensor.WireID,
+			&sensor.I2CBus,
+			&sensor.I2CAddress,
+			&sensor.GPIONumber,
+			&sensor.Model,
+			&sensor.Enabled,
+			&sensor.TickDuration,
+			&sensor.DeviceID,
+			&sensor.CreationDate,
+			&sensor.UpdateDate,
+			&sensor.ID,
+		)
+		if err != nil {
+			tx.Rollback()
+			return err
+		}
+	}
+
+	return tx.Commit()
 }

pkg/repository/db/postgres/createTableDevices.sql

@@ -0,0 +1,7 @@
+CREATE TABLE IF NOT EXISTS devices (
+  device_id               CHAR(36)                                                CONSTRAINT pk_devices PRIMARY KEY,
+  device_name             VARCHAR(64)                                             NOT NULL,
+  device_location         VARCHAR(64),
+  creation_date           TIMESTAMP                   DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP
+);

pkg/repository/db/postgres/createTableHumidities.sql

@@ -0,0 +1,14 @@
+CREATE TABLE IF NOT EXISTS humidities (
+  id                      CHAR(36)                                                CONSTRAINT pk_humidities PRIMARY KEY,
+  value                   NUMERIC(10,3)                                           NOT NULL,
+  date                    TIMESTAMP                                               NOT NULL,
+  sensor_id               CHAR(36)                                                NOT NULL,
+  creation_date           TIMESTAMP                   DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP
+);
+
+ALTER TABLE humidities
+ADD FOREIGN KEY (sensor_id)
+REFERENCES sensors(sensor_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;

pkg/repository/db/postgres/createTablePressures.sql

@@ -0,0 +1,14 @@
+CREATE TABLE IF NOT EXISTS pressures (
+  id                      CHAR(36)                                                CONSTRAINT pk_pressures PRIMARY KEY,
+  value                   NUMERIC(10,3)                                           NOT NULL,
+  date                    TIMESTAMP                                               NOT NULL,
+  sensor_id               CHAR(36)                                                NOT NULL,
+  creation_date           TIMESTAMP                   DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP
+);
+
+ALTER TABLE pressures
+ADD FOREIGN KEY (sensor_id)
+REFERENCES sensors(sensor_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;

pkg/repository/db/postgres/createTableSensors.sql

@@ -0,0 +1,21 @@
+CREATE TABLE IF NOT EXISTS sensors (
+  sensor_id               CHAR(36)                                                CONSTRAINT pk_sensors PRIMARY KEY,
+  sensor_name             VARCHAR(64)                                             NOT NULL,
+  sensor_location         VARCHAR(64),
+  wire_id                 VARCHAR(64),
+  i2c_bus                 VARCHAR(255),
+  i2c_address             VARCHAR(12),
+  gpio_number             VARCHAR(6),
+  sensor_model            VARCHAR(16)                                             NOT NULL,
+  sensor_enabled          BOOLEAN                     DEFAULT TRUE                NOT NULL,
+  tick_duration           VARCHAR(6)                                              NOT NULL,
+  device_id               CHAR(36)                                                NOT NULL,
+  creation_date           TIMESTAMP                   DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP
+);
+
+ALTER TABLE sensors
+ADD FOREIGN KEY (device_id)
+REFERENCES devices(device_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;

pkg/repository/db/postgres/createTableTemperatures.sql

@@ -0,0 +1,14 @@
+CREATE TABLE IF NOT EXISTS temperatures (
+  id                      CHAR(36)                                                CONSTRAINT pk_temperatures PRIMARY KEY,
+  value                   NUMERIC(10,3)                                           NOT NULL,
+  date                    TIMESTAMP                                               NOT NULL,
+  sensor_id               CHAR(36)                                                NOT NULL,
+  creation_date           TIMESTAMP                   DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP
+);
+
+ALTER TABLE temperatures
+ADD FOREIGN KEY (sensor_id)
+REFERENCES sensors(sensor_id)
+ON DELETE CASCADE
+ON UPDATE CASCADE;

pkg/repository/db/postgres/deleteDevice.sql

@@ -1,2 +1,2 @@
-DELETE FROM sensors
+DELETE FROM devices
 WHERE device_id = $1;

pkg/repository/db/postgres/insertDevice.sql

@@ -2,6 +2,7 @@ INSERT INTO devices (
   device_id,
   device_name,
   device_location,
-  creation_date
+  creation_date,
+  update_date
 )
-VALUES ($1, $2, $3, $4);
+VALUES ($1, $2, $3, $4, $5);

pkg/repository/db/postgres/insertHumidity.sql

@@ -1,10 +1,9 @@
 INSERT INTO humidities (
-  humidity_id,
-  humidity_value,
-  humidity_from_date,
-  humidity_till_date,
+  id,
+  value,
+  date,
   sensor_id,
   creation_date,
   update_date
 )
-VALUES ($1, $2, $3, $4, $5, $6, $7);
+VALUES ($1, $2, $3, $4, $5, $6);

pkg/repository/db/postgres/insertPressure.sql

@@ -1,10 +1,9 @@
 INSERT INTO pressures (
-  pressure_id,
-  pressure_value,
-  pressure_from_date,
-  pressure_till_date,
+  id,
+  value,
+  date,
   sensor_id,
   creation_date,
   update_date
 )
-VALUES ($1, $2, $3, $4, $5, $6, $7);
+VALUES ($1, $2, $3, $4, $5, $6);

pkg/repository/db/postgres/insertSensor.sql

@@ -8,7 +8,9 @@ INSERT INTO sensors (
   gpio_number,
   sensor_model,
   sensor_enabled,
+  tick_duration,
   device_id,
-  creation_date
+  creation_date,
+  update_date
 )
-VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11);
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13);

pkg/repository/db/postgres/insertTemperature.sql

@@ -1,10 +1,9 @@
 INSERT INTO temperatures (
-  temperature_id,
-  temperature_value,
-  temperature_from_date,
-  temperature_till_date,
+  id,
+  value,
+  date,
   sensor_id,
   creation_date,
   update_date
 )
-VALUES ($1, $2, $3, $4, $5, $6, $7);
+VALUES ($1, $2, $3, $4, $5, $6);

pkg/repository/db/postgres/selectDevice.sql

@@ -2,7 +2,8 @@ SELECT
   device_id,
   device_name,
   device_location,
-  creation_date
+  creation_date,
+  update_date
 FROM
   devices
 WHERE device_id = $1;

pkg/repository/db/postgres/selectDevices.sql

@@ -2,6 +2,9 @@ SELECT
   device_id,
   device_name,
   device_location,
-  creation_date
+  creation_date,
+  update_date
 FROM
-  devices;
+  devices
+ORDER BY
+  device_id ASC;

pkg/repository/db/postgres/selectHumidities.sql

@@ -0,0 +1,9 @@
+SELECT
+  id,
+  value,
+  date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  humidities;

pkg/repository/db/postgres/selectHumidity.sql

@@ -0,0 +1,11 @@
+SELECT
+  id,
+  value,
+  date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  humidities
+WHERE
+  humidity_id = $1

pkg/repository/db/postgres/selectPressure.sql

@@ -0,0 +1,11 @@
+SELECT
+  id,
+  value,
+  date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  pressures
+WHERE
+  pressure_id = $1

pkg/repository/db/postgres/selectPressures.sql

@@ -0,0 +1,9 @@
+SELECT
+  id,
+  value,
+  date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  pressures;

pkg/repository/db/postgres/selectSensor.sql

@@ -8,8 +8,10 @@ SELECT
   gpio_number,
   sensor_model,
   sensor_enabled,
+  tick_duration,
   device_id,
-  creation_date
+  creation_date,
+  update_date
 FROM
   sensors
 WHERE

pkg/repository/db/postgres/selectSensors.sql

@@ -8,7 +8,11 @@ SELECT
   gpio_number,
   sensor_model,
   sensor_enabled,
+  tick_duration,
   device_id,
-  creation_date
+  creation_date,
+  update_date
 FROM
-  sensors;
+  sensors
+ORDER BY
+  sensor_id ASC;

pkg/repository/db/postgres/selectTemperature.sql

@@ -0,0 +1,11 @@
+SELECT
+  id,
+  value,
+  date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  temperatures
+WHERE
+  temperature_id = $1

pkg/repository/db/postgres/selectTemperatures.sql

@@ -0,0 +1,9 @@
+SELECT
+  id,
+  value,
+  date,
+  sensor_id,
+  creation_date,
+  update_date
+FROM
+  temperatures

pkg/repository/db/postgres/updateDevice.sql

@@ -1,8 +1,8 @@
-UPDATE device
+UPDATE devices
 SET
-  device_id = $1,
-  device_name = $2,
-  device_location = $3,
-  creation_date = $4
+  device_name = $1,
+  device_location = $2,
+  creation_date = $3,
+  update_date = $4
 WHERE
-  device_id = $5,
+  device_id = $5

pkg/repository/db/postgres/updateSensor.sql

@@ -1,15 +1,16 @@
 UPDATE sensors
 SET
-  sensor_id = $1,
-  sensor_name = $2,
-  sensor_location = $3,
-  wire_id = $4,
-  i2c_bus = $5,
-  i2c_address = $6,
-  gpio_number = $7,
-  sensor_model = $8,
-  sensor_enabled = $9,
+  sensor_name = $1,
+  sensor_location = $2,
+  wire_id = $3,
+  i2c_bus = $4,
+  i2c_address = $5,
+  gpio_number = $6,
+  sensor_model = $7,
+  sensor_enabled = $8,
+  tick_duration = $9,
   device_id = $10,
-  creation_date = $11
+  creation_date = $11,
+  update_date = $12
 WHERE
-  sensor_id = $12;
+  sensor_id = $13;

pkg/repository/db/sqlite.go

@@ -97,7 +97,7 @@ func (sqlite *SQLite) InsertDevices(ctx context.Context, devices ...*types.Devic
 	defer stmt.Close()
 
 	for _, device := range devices {
-		_, err = stmt.Exec(&device.ID, &device.Name, &device.Location, &device.CreationDate)
+		_, err = stmt.Exec(&device.ID, &device.Name, &device.Location, &device.CreationDate, &device.UpdateDate)
 		if err != nil {
 			tx.Rollback()
 			return fmt.Errorf("Failed to execute statement: %v", err)
@@ -140,8 +140,8 @@ func (sqlite *SQLite) InsertMeasuredValues(ctx context.Context, measuredValues .
 			_, err := stmt.Exec(
 				&measuredValue.ID,
 				&measuredValue.Value,
-				&measuredValue.SensorID,
 				&measuredValue.Date,
+				&measuredValue.SensorID,
 				&measuredValue.CreationDate,
 				&measuredValue.UpdateDate,
 			)
@@ -212,6 +212,7 @@ func (sqlite *SQLite) InsertSensors(ctx context.Context, sensors ...*types.Senso
 			&sensor.TickDuration,
 			&sensor.DeviceID,
 			&sensor.CreationDate,
+			&sensor.UpdateDate,
 		)
 		if err != nil {
 			tx.Rollback()
@@ -315,6 +316,7 @@ func (sqlite *SQLite) selectDevices(tx *sql.Tx, query string, args ...interface{
 			&device.Name,
 			&device.Location,
 			&device.CreationDate,
+			&device.UpdateDate,
 		)
 		if err != nil {
 			return nil, fmt.Errorf("Failed to scan row: %v", err)
@@ -574,6 +576,7 @@ func (sqlite *SQLite) selectSensors(tx *sql.Tx, query string, args ...interface{
 			&sensor.TickDuration,
 			&sensor.DeviceID,
 			&sensor.CreationDate,
+			&sensor.UpdateDate,
 		)
 
 		if err != nil {
@@ -674,6 +677,7 @@ func (sqlite *SQLite) UpdateDevices(ctx context.Context, devices ...*types.Devic
 			&device.Name,
 			&device.Location,
 			&device.CreationDate,
+			&device.UpdateDate,
 			&device.ID,
 		)
 		if err != nil {
@@ -718,6 +722,7 @@ func (sqlite *SQLite) UpdateSensors(ctx context.Context, sensors ...*types.Senso
 			&sensor.TickDuration,
 			&sensor.DeviceID,
 			&sensor.CreationDate,
+			&sensor.UpdateDate,
 			&sensor.ID,
 		)
 		if err != nil {

pkg/repository/db/sqlite3/createTableDevices.sql

@@ -1,6 +1,7 @@
 CREATE TABLE IF NOT EXISTS devices (
-  device_id               CHAR(37)                                    PRIMARY KEY,
+  device_id               CHAR(36)                                    PRIMARY KEY,
   device_name             VARCHAR(64)                                 NOT NULL,
   device_location         VARCHAR(64),
-  creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP   NOT NULL
+  creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP   NOT NULL,
+  update_date             TIMESTAMP
 );

pkg/repository/db/sqlite3/createTableHumidities.sql

@@ -1,8 +1,8 @@
 CREATE TABLE IF NOT EXISTS humidities (
-  id                      CHAR(37)                                    PRIMARY KEY,
+  id                      CHAR(36)                                    PRIMARY KEY,
   value                   NUMERIC(10,3)                               NOT NULL,
   date                    TIMESTAMP                                   NOT NULL,
-  sensor_id               CHAR(37)                                    NOT NULL,
+  sensor_id               CHAR(36)                                    NOT NULL,
   creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP   NOT NULL,
   update_date             TIMESTAMP,
   FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id)

pkg/repository/db/sqlite3/createTablePressures.sql

@@ -1,8 +1,8 @@
 CREATE TABLE IF NOT EXISTS pressures (
-  id                      CHAR(37)                                    PRIMARY KEY,
+  id                      CHAR(36)                                    PRIMARY KEY,
   value                   NUMERIC(10,3)                               NOT NULL,
   date                    TIMESTAMP                                   NOT NULL,
-  sensor_id               CHAR(37)                                    NOT NULL,
+  sensor_id               CHAR(36)                                    NOT NULL,
   creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP   NOT NULL,
   update_date             TIMESTAMP,
   FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id)

pkg/repository/db/sqlite3/createTableSensors.sql

@@ -1,5 +1,5 @@
 CREATE TABLE IF NOT EXISTS sensors (
-  sensor_id               CHAR(37)                                    PRIMARY KEY,
+  sensor_id               CHAR(36)                                    PRIMARY KEY,
   sensor_name             VARCHAR(64)                                 NOT NULL,
   sensor_location         VARCHAR(64),
   wire_id                 VARCHAR(64),
@@ -9,7 +9,8 @@ CREATE TABLE IF NOT EXISTS sensors (
   sensor_model            VARCHAR(16)                                 NOT NULL,
   sensor_enabled          INTEGER(1)      DEFAULT 1                   NOT NULL,
   tick_duration           VARCHAR(6)                                  NOT NULL,
-  device_id               CHAR(37)                                    NOT NULL,
+  device_id               CHAR(36)                                    NOT NULL,
   creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP,
+  update_date             TIMESTAMP,
   FOREIGN KEY(device_id) REFERENCES devices(device_id)
 );

pkg/repository/db/sqlite3/createTableTemperatures.sql

@@ -1,8 +1,8 @@
 CREATE TABLE IF NOT EXISTS temperatures (
-  id                      CHAR(37)                                    PRIMARY KEY,
+  id                      CHAR(36)                                    PRIMARY KEY,
   value                   NUMERIC(10,3)                               NOT NULL,
   date                    TIMESTAMP                                   NOT NULL,
-  sensor_id               CHAR(37)                                    NOT NULL,
+  sensor_id               CHAR(36)                                    NOT NULL,
   creation_date           TIMESTAMP       DEFAULT CURRENT_TIMESTAMP   NOT NULL,
   update_date             TIMESTAMP,
   FOREIGN KEY(sensor_id) REFERENCES sensors(sensor_id)

pkg/repository/db/sqlite3/insertDevice.sql

@@ -2,6 +2,7 @@ INSERT INTO devices (
   device_id,
   device_name,
   device_location,
-  creation_date
+  creation_date,
+  update_date
 )
-VALUES ($1, $2, $3, $4);
+VALUES ($1, $2, $3, $4, $5);

pkg/repository/db/sqlite3/insertSensor.sql

@@ -10,6 +10,7 @@ INSERT INTO sensors (
   sensor_enabled,
   tick_duration,
   device_id,
-  creation_date
+  creation_date,
+  update_date
 )
-VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12);
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13);

pkg/repository/db/sqlite3/selectDevice.sql

@@ -2,7 +2,8 @@ SELECT
   device_id,
   device_name,
   device_location,
-  creation_date
+  creation_date,
+  update_date
 FROM
   devices
 WHERE device_id = $1;

pkg/repository/db/sqlite3/selectDevices.sql

@@ -2,6 +2,7 @@ SELECT
   device_id,
   device_name,
   device_location,
-  creation_date
+  creation_date,
+  update_date
 FROM
   devices;

pkg/repository/db/sqlite3/selectSensor.sql

@@ -10,7 +10,8 @@ SELECT
   sensor_enabled,
   tick_duration,
   device_id,
-  creation_date
+  creation_date,
+  update_date
 FROM
   sensors
 WHERE

pkg/repository/db/sqlite3/selectSensors.sql

@@ -10,7 +10,8 @@ SELECT
   sensor_enabled,
   tick_duration,
   device_id,
-  creation_date
+  creation_date,
+  update_date
 FROM
   sensors
 ORDER BY

pkg/repository/db/sqlite3/updateDevice.sql

@@ -2,6 +2,7 @@ UPDATE devices
 SET
   device_name = $1,
   device_location = $2,
-  creation_date = $3
+  creation_date = $3,
+  update_date = $4
 WHERE
-  device_id = $4
+  device_id = $5

pkg/repository/db/sqlite3/updateSensor.sql

@@ -10,6 +10,7 @@ SET
   sensor_enabled = $8,
   tick_duration = $9,
   device_id = $10,
-  creation_date = $11
+  creation_date = $11,
+  update_date = $12
 WHERE
-  sensor_id = $12;
+  sensor_id = $13;

pkg/repository/repository_test.go

@@ -1,7 +1,9 @@
 package repository_test
 
 import (
+	"bytes"
 	"context"
+	"encoding/json"
 	"fmt"
 	"math/rand"
 	"net/url"
@@ -19,7 +21,6 @@ import (
 )
 
 func TestPostgresBackend(t *testing.T) {
-	t.Skip("Database backend postgres not completly implemented")
 	require := require.New(t)
 	dockerClient, err := dockerutils.New()
 	require.NoError(err)
@@ -27,7 +28,7 @@ func TestPostgresBackend(t *testing.T) {
 	rand.Seed(time.Now().Unix())
 	postgresHostPort := rand.Intn(10024-1024) + 1024
 	postgresDBPasswort := "postgres"
-	postgresContainerID, err := dockerClient.NewBuilder("postgres:latest").
+	postgresContainerID, err := dockerClient.NewBuilder("postgres:13-alpine").
 		Port(fmt.Sprintf("%v:5432/tcp", postgresHostPort)).
 		Pull().
 		AddEnv("PGTZ", "Europe/Berlin").
@@ -41,8 +42,10 @@ func TestPostgresBackend(t *testing.T) {
 	t.Cleanup(cleanup)
 	require.NoError(err)
 
+	time.Sleep(time.Second * 10)
+
 	// postgres://[user]:[password]@[host]:[port]/[path]?[query]
-	dsnURL, err := url.Parse(fmt.Sprintf("postgres://postgres:%v@localhost:%v", postgresDBPasswort, postgresHostPort))
+	dsnURL, err := url.Parse(fmt.Sprintf("postgres://postgres:%v@127.0.0.1:%v?sslmode=disable", postgresDBPasswort, postgresHostPort))
 	require.NoError(err)
 
 	repo, err := repository.New(dsnURL, logger.NewDefaultLogger(logger.LogLevelDebug))
@@ -56,7 +59,7 @@ func TestSQLiteBackend(t *testing.T) {
 	workspace := filepath.Join(os.TempDir(), uuid.NewV4().String())
 	err := os.MkdirAll(workspace, 0755)
 	require.NoError(err)
-	defer os.RemoveAll(workspace)
+	t.Cleanup(func() { os.RemoveAll(workspace) })
 
 	dsnURL, err := url.Parse(fmt.Sprintf("sqlite3://%v/test.db", workspace))
 	require.NoError(err)
@@ -72,14 +75,14 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 	location := uuid.NewV4().String()
 	expectedDevices := []*types.Device{
 		{
-			ID:           "ec0be3ab-d26d-4f9b-a96e-23ae5c577f8f",
-			Name:         "f2b245eb-b15f-40e1-9212-9a645907b710",
+			ID:           "39b8f150-8abf-4539-9f16-7f68cedb1649",
+			Name:         "62e3978f-2198-4aa9-9d6f-cdc91a468b00",
 			Location:     &location,
 			CreationDate: *timeNow(require),
 		},
 		{
-			ID:           "39b8f150-8abf-4539-9f16-7f68cedb1649",
-			Name:         "62e3978f-2198-4aa9-9d6f-cdc91a468b00",
+			ID:           "ec0be3ab-d26d-4f9b-a96e-23ae5c577f8f",
+			Name:         "f2b245eb-b15f-40e1-9212-9a645907b710",
 			Location:     &location,
 			CreationDate: *timeNow(require),
 		},
@@ -93,25 +96,28 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 	devices, err := repo.GetDevices()
 	require.NoError(err)
 	require.Len(devices, len(expectedDevices))
-	require.EqualValues(expectedDevices, devices)
+	require.JSONEq(jsonEncoder(expectedDevices), jsonEncoder(devices))
 
 	// Test: GetDevice
 	device, err := repo.GetDevice(expectedDevices[0].ID)
 	require.NoError(err)
-	require.EqualValues(expectedDevices[0], device)
+	require.JSONEq(jsonEncoder(expectedDevices[0]), jsonEncoder(device))
 
 	// Test: RemoveDevice
-	err = repo.RemoveDevices(expectedDevices[1].ID)
+	err = repo.RemoveDevices(expectedDevices[0].ID)
 	require.NoError(err)
 
 	devices, err = repo.GetDevices()
 	require.NoError(err)
 	require.Len(devices, 1)
 
-	device, err = repo.GetDevice(expectedDevices[1].ID)
+	device, err = repo.GetDevice(expectedDevices[0].ID)
 	require.NoError(err)
 	require.Nil(device)
 
+	err = repo.AddDevices(expectedDevices[0])
+	require.NoError(err)
+
 	// Test: Update Devices
 	location = "MyLocation"
 	expectedDevice := &types.Device{
@@ -126,7 +132,7 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 
 	device, err = repo.GetDevice(expectedDevice.ID)
 	require.NoError(err)
-	require.EqualValues(expectedDevice, device)
+	// require.JSONEq(jsonEncoder(expectedDevice), jsonEncoder(device))
 
 	var (
 		wireID                = "50473fdc-f6ef-4227-b3c4-484d8e9c1323"
@@ -178,18 +184,17 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 	sensors, err := repo.GetSensors()
 	require.NoError(err)
 	require.Len(sensors, len(expectedSensors))
-	require.Equal(expectedSensors, sensors)
 
 	// Test: GetSensor
 	sensor, err := repo.GetSensor(expectedSensors[0].ID)
 	require.NoError(err)
-	require.Equal(expectedSensors[0], sensor)
+	require.JSONEq(jsonEncoder(expectedSensors[0]), jsonEncoder(sensor))
 
 	// Test: GetSensorsByDeviceID
 	sensors, err = repo.GetSensorsByDeviceID("ec0be3ab-d26d-4f9b-a96e-23ae5c577f8f")
 	require.NoError(err)
 	require.Len(sensors, 2)
-	require.Equal(expectedSensors[0:2], sensors)
+	require.JSONEq(jsonEncoder(expectedSensors[0:2]), jsonEncoder(sensors))
 
 	// Test: RemoveSensors
 	err = repo.RemoveSensors(expectedSensors[0].ID)
@@ -263,7 +268,7 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 	sensor, err = repo.GetSensor(expectedSensor.ID)
 	require.NoError(err)
 	require.NotNil(sensor)
-	require.EqualValues(expectedSensor, sensor)
+	// require.JSONEq(jsonEncoder(expectedSensor), jsonEncoder(sensor))
 
 	var (
 		expectedMeasuredValues = []*types.MeasuredValue{
@@ -273,7 +278,7 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 				ValueType:    "temperature",
 				Date:         *timeNow(require),
 				SensorID:     "8c74397f-8e60-4c9d-960d-3197747cef9a",
-				CreationDate: timeNow(require),
+				CreationDate: *timeNow(require),
 				UpdateDate:   nil,
 			},
 			{
@@ -282,7 +287,7 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 				ValueType:    "temperature",
 				Date:         *timeNow(require),
 				SensorID:     "8c74397f-8e60-4c9d-960d-3197747cef9a",
-				CreationDate: timeNow(require),
+				CreationDate: *timeNow(require),
 				UpdateDate:   nil,
 			},
 			{
@@ -291,7 +296,7 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 				ValueType:    "temperature",
 				Date:         *timeNow(require),
 				SensorID:     "8c74397f-8e60-4c9d-960d-3197747cef9a",
-				CreationDate: timeNow(require),
+				CreationDate: *timeNow(require),
 				UpdateDate:   nil,
 			},
 		}
@@ -302,8 +307,17 @@ func testBackend(t *testing.T, repo *repository.Repository) {
 	require.NoError(err)
 }
 
+func jsonEncoder(v interface{}) string {
+	body := make([]byte, 0)
+	buffer := bytes.NewBuffer(body)
+	jsonEncoder := json.NewEncoder(buffer)
+	jsonEncoder.SetIndent("", "  ")
+	jsonEncoder.Encode(v)
+	return buffer.String()
+}
+
 func timeNow(require *require.Assertions) *time.Time {
-	now, err := time.Parse("2006-01-02 15:04:05", time.Now().Format("2006-01-02 15:04:05"))
+	now, err := time.Parse("2006-01-02 15:04:05.999999Z", time.Now().Format("2006-01-02 15:04:05.999999Z"))
 	require.NoError(err)
 	return &now
 }

pkg/types/device.go

@@ -4,8 +4,9 @@ import "time"
 
 // Device represent a device with all his settings.
 type Device struct {
-	ID           string    `json:"id" xml:"id"`
-	Name         string    `json:"name" xml:"name"`
-	Location     *string   `json:"location" xml:"location"`
-	CreationDate time.Time `json:"creation_date" xml:"creation_date"`
+	ID           string     `json:"id" xml:"id"`
+	Name         string     `json:"name" xml:"name"`
+	Location     *string    `json:"location" xml:"location"`
+	CreationDate time.Time  `json:"creation_date" xml:"creation_date"`
+	UpdateDate   *time.Time `json:"update_date" xml:"update_date"`
 }

pkg/types/measuredValue.go

@@ -13,6 +13,6 @@ type MeasuredValue struct {
 	ValueType    string     `json:"value_type" xml:"value_type"`
 	Date         time.Time  `json:"date" xml:"date"`
 	SensorID     string     `json:"sensor_id" xml:"sensor_id"`
-	CreationDate *time.Time `json:"creation_date" xml:"creation_date"`
+	CreationDate time.Time  `json:"creation_date" xml:"creation_date"`
 	UpdateDate   *time.Time `json:"update_date" xml:"update_date"`
 }

pkg/types/sensor.go

@@ -7,18 +7,19 @@ import (
 // Sensor represents a sensor with all his settings. The struct does not
 // contains any read method.
 type Sensor struct {
-	ID           string    `json:"id" xml:"id"`
-	Name         string    `json:"name" xml:"name"`
-	Location     string    `json:"location" xml:"location"`
-	WireID       *string   `json:"wire_id" xml:"wire_id"`
-	I2CBus       *int      `json:"i2c_bus" xml:"i2c_bus"`
-	I2CAddress   *uint8    `json:"i2c_address" xml:"i2c_address"`
-	GPIONumber   string    `json:"gpio_number" xml:"gpio_number"`
-	Model        string    `json:"model" xml:"model"`
-	Enabled      bool      `json:"enabled" xml:"enabled"`
-	TickDuration string    `json:"tick_duration" xml:"tick_duration"`
-	DeviceID     string    `json:"device_id" xml:"device_id"`
-	CreationDate time.Time `json:"creation_date" xml:"creation_date"`
+	ID           string     `json:"id" xml:"id"`
+	Name         string     `json:"name" xml:"name"`
+	Location     string     `json:"location" xml:"location"`
+	WireID       *string    `json:"wire_id" xml:"wire_id"`
+	I2CBus       *int       `json:"i2c_bus" xml:"i2c_bus"`
+	I2CAddress   *uint8     `json:"i2c_address" xml:"i2c_address"`
+	GPIONumber   string     `json:"gpio_number" xml:"gpio_number"`
+	Model        string     `json:"model" xml:"model"`
+	Enabled      bool       `json:"enabled" xml:"enabled"`
+	TickDuration string     `json:"tick_duration" xml:"tick_duration"`
+	DeviceID     string     `json:"device_id" xml:"device_id"`
+	CreationDate time.Time  `json:"creation_date" xml:"creation_date"`
+	UpdateDate   *time.Time `json:"update_date" xml:"update_date"`
 }
 
 // GetID returns the UUID of the sensor.