Save data to database

docs/modules/ROOT/pages/explanations/data-usage.adoc

@@ -0,0 +1,17 @@
+= Data Usage
+
+This page gives a brief overview how buckets data usage is saved to the postgres billing database.
+
+== Data flow
+
+image::application-logic.drawio.svg[]
+
+== Data source
+- Buckets are fetched from Exoscale Provider and K8s Cluster.
+- The bucket names in Exoscale are unique across organisation which prevents clusters having same bucket names.
+
+== Data saving
+
+- The data is saved in a postgres database.
+- A database must be provided in the postgres URL.
+- The application ensures the initial configuration of specified database in the URL.

go.mod

@@ -3,11 +3,14 @@ module github.com/vshn/exoscale-metrics-collector
 go 1.18
 
 require (
+	github.com/appuio/appuio-cloud-reporting v0.5.0
 	github.com/ccremer/go-command-pipeline v0.20.0
 	github.com/exoscale/egoscale v0.90.1
 	github.com/go-logr/logr v1.2.3
 	github.com/go-logr/zapr v1.2.3
-	github.com/urfave/cli/v2 v2.16.3
+	github.com/jmoiron/sqlx v1.3.5
+	github.com/urfave/cli/v2 v2.17.1
+	github.com/vshn/cloudscale-metrics-collector v0.3.3
 	github.com/vshn/provider-exoscale v0.1.0
 	go.uber.org/zap v1.23.0
 	golang.org/x/exp v0.0.0-20220930202632-ec3f01382ef9
@@ -39,8 +42,17 @@ require (
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
 	github.com/hashicorp/go-retryablehttp v0.7.1 // indirect
 	github.com/imdario/mergo v0.3.12 // indirect
+	github.com/jackc/chunkreader/v2 v2.0.1 // indirect
+	github.com/jackc/pgconn v1.12.0 // indirect
+	github.com/jackc/pgio v1.0.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgproto3/v2 v2.3.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
+	github.com/jackc/pgtype v1.11.0 // indirect
+	github.com/jackc/pgx/v4 v4.16.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/lopezator/migrator v0.3.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
@@ -60,6 +72,7 @@ require (
 	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.6.0 // indirect
+	golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa // indirect
 	golang.org/x/net v0.0.0-20220722155237-a158d28d115b // indirect
 	golang.org/x/oauth2 v0.0.0-20220608161450-d0670ef3b1eb // indirect
 	golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f // indirect