Remove fatal from pkg

* Functions in pkg should return errors
 * If aborting is desired, that behavior should be left to the consumer

cmd/populate_blocks/main.go

@@ -8,7 +8,6 @@ import (
 	"github.com/8thlight/vulcanizedb/cmd"
 	"github.com/8thlight/vulcanizedb/pkg/geth"
 	"github.com/8thlight/vulcanizedb/pkg/history"
-	"github.com/8thlight/vulcanizedb/pkg/repositories"
 )
 
 func main() {
@@ -16,9 +15,8 @@ func main() {
 	startingBlockNumber := flag.Int("starting-number", -1, "First block to fill from")
 	flag.Parse()
 	config := cmd.LoadConfig(*environment)
-
 	blockchain := geth.NewGethBlockchain(config.Client.IPCPath)
-	repository := repositories.NewPostgres(config.Database)
+	repository := cmd.LoadPostgres(config.Database)
 	numberOfBlocksCreated := history.PopulateBlocks(blockchain, repository, int64(*startingBlockNumber))
 	fmt.Printf("Populated %d blocks", numberOfBlocksCreated)
 }

cmd/run/main.go

@@ -10,15 +10,13 @@ import (
 	"github.com/8thlight/vulcanizedb/pkg/core"
 	"github.com/8thlight/vulcanizedb/pkg/geth"
 	"github.com/8thlight/vulcanizedb/pkg/observers"
-	"github.com/8thlight/vulcanizedb/pkg/repositories"
 )
 
 func main() {
 	environment := flag.String("environment", "", "Environment name")
 	flag.Parse()
 	config := cmd.LoadConfig(*environment)
-
-	repository := repositories.NewPostgres(config.Database)
+	repository := cmd.LoadPostgres(config.Database)
 	fmt.Printf("Creating Geth Blockchain to: %s\n", config.Client.IPCPath)
 	listener := blockchain_listener.NewBlockchainListener(
 		geth.NewGethBlockchain(config.Client.IPCPath),

cmd/show_contract_summary/main.go

@@ -9,7 +9,6 @@ import (
 
 	"github.com/8thlight/vulcanizedb/cmd"
 	"github.com/8thlight/vulcanizedb/pkg/geth"
-	"github.com/8thlight/vulcanizedb/pkg/repositories"
 	"github.com/8thlight/vulcanizedb/pkg/watched_contracts"
 )
 
@@ -18,9 +17,8 @@ func main() {
 	contractHash := flag.String("contract-hash", "", "Contract hash to show summary")
 	flag.Parse()
 	config := cmd.LoadConfig(*environment)
-
 	blockchain := geth.NewGethBlockchain(config.Client.IPCPath)
-	repository := repositories.NewPostgres(config.Database)
+	repository := cmd.LoadPostgres(config.Database)
 	contractSummary, err := watched_contracts.NewSummary(blockchain, repository, *contractHash)
 	if err != nil {
 		log.Fatalln(err)

cmd/subscribe_contract/main.go

@@ -5,7 +5,6 @@ import (
 
 	"github.com/8thlight/vulcanizedb/cmd"
 	"github.com/8thlight/vulcanizedb/pkg/core"
-	"github.com/8thlight/vulcanizedb/pkg/repositories"
 )
 
 func main() {
@@ -13,6 +12,6 @@ func main() {
 	contractHash := flag.String("contract-hash", "", "contract-hash=x1234")
 	flag.Parse()
 	config := cmd.LoadConfig(*environment)
-	repository := repositories.NewPostgres(config.Database)
+	repository := cmd.LoadPostgres(config.Database)
 	repository.CreateWatchedContract(core.WatchedContract{Hash: *contractHash})
 }

cmd/utils.go

@@ -4,6 +4,7 @@ import (
 	"log"
 
 	"github.com/8thlight/vulcanizedb/pkg/config"
+	"github.com/8thlight/vulcanizedb/pkg/repositories"
 )
 
 func LoadConfig(environment string) config.Config {
@@ -13,3 +14,11 @@ func LoadConfig(environment string) config.Config {
 	}
 	return *cfg
 }
+
+func LoadPostgres(database config.Database) repositories.Postgres {
+	repository, err := repositories.NewPostgres(database)
+	if err != nil {
+		log.Fatalf("Error loading postgres\n%v", err)
+	}
+	return repository
+}