SNOW-1634712 Support for toml file connection configuration

cmd/tomlfileconnection/.gitignore

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+tomlfileconnection.go

cmd/tomlfileconnection/Makefile

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+include ../../gosnowflake.mak
+CMD_TARGET=tomlfileconnection
+
+## Install
+install: cinstall
+
+## Run
+run: crun
+
+## Lint
+lint: clint
+
+## Format source codes
+fmt: cfmt
+
+.PHONY: install run lint fmt

cmd/tomlfileconnection/tomlfileconnection.go

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+// Example: How to connect to the server with the toml file configuration
+// Prerequiste: following the Snowflake doc: https://docs.snowflake.com/en/developer-guide/snowflake-cli-v2/connecting/specify-credentials
+package main
+
+import (
+ "database/sql"
+ "flag"
+ "fmt"
+ "log"
+ "os"
+
+ sf "github.com/snowflakedb/gosnowflake"
+)
+
+func main() {
+ if !flag.Parsed() {
+ flag.Parse()
+ }
+
+ os.Setenv("SNOWFLAKE_HOME", "<The directory path where the toml file exists>")
+ os.Setenv("SNOWFLAKE_DEFAULT_CONNECTION_NAME", "<DSN Name>")
+
+ cfg, err := sf.LoadConnectionConfig()
+ if err != nil {
+ log.Fatalf("failed to create Config, err: %v", err)
+ }
+ dsn, err := sf.DSN(cfg)
+ if err != nil {
+ log.Fatalf("failed to create DSN from Config: %v, err: %v", cfg, err)
+ }
+
+ db, err := sql.Open("snowflake", dsn)
+ if err != nil {
+ log.Fatalf("failed to connect. %v, err: %v", dsn, err)
+ }
+ defer db.Close()
+ query := "SELECT 1"
+ rows, err := db.Query(query) // no cancel is allowed
+ if err != nil {
+ log.Fatalf("failed to run a query. %v, err: %v", query, err)
+ }
+ defer rows.Close()
+ var v int
+ for rows.Next() {
+ err := rows.Scan(&v)
+ if err != nil {
+ log.Fatalf("failed to get result. err: %v", err)
+ }
+ if v != 1 {
+ log.Fatalf("failed to get 1. got: %v", v)
+ }
+ }
+ if rows.Err() != nil {
+ fmt.Printf("ERROR: %v\n", rows.Err())
+ return
+ }
+ fmt.Printf("Congrats! You have successfully run %v with Snowflake DB!\n", query)
+}