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Merged
merged 1 commit into from
Mar 29, 2016
Merged

Support for connection attributes #350

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10 changes: 10 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -169,6 +169,16 @@ Sets the collation used for client-server interaction on connection. In contrast

A list of valid charsets for a server is retrievable with `SHOW COLLATION`.

##### `connattrs`

```
Type: comma seperated string of name/value pairs
Valid Values: (<name1>=<value1>,<name2>=<value2>,...)
Default: none
```

Sends custom connection attributes to the server.

##### `clientFoundRows`

```
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13 changes: 13 additions & 0 deletions driver.go
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Expand Up @@ -20,6 +20,9 @@ import (
"database/sql"
"database/sql/driver"
"net"
"os"
"os/user"
"strconv"
)

// MySQLDriver is exported to make the driver directly accessible.
Expand All @@ -30,6 +33,10 @@ type MySQLDriver struct{}
// Custom dial functions must be registered with RegisterDial
type DialFunc func(addr string) (net.Conn, error)

var pid string
var os_user string
var os_user_full string
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Wrong naming convention

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Filed #442 for this lint issue.


var dials map[string]DialFunc

// RegisterDial registers a custom dial function. It can then be used by the
Expand Down Expand Up @@ -163,5 +170,11 @@ func handleAuthResult(mc *mysqlConn, cipher []byte) error {
}

func init() {
pid = strconv.Itoa(os.Getpid())
os_user_entry, err := user.Current()
if err == nil {
os_user_full = os_user_entry.Name
os_user = os_user_entry.Username
}
sql.Register("mysql", &MySQLDriver{})
}
10 changes: 5 additions & 5 deletions driver_test.go
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Expand Up @@ -28,7 +28,7 @@ import (
)

var (
user string
dbuser string
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Why?

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That's because the import of os/user

pass string
prot string
addr string
Expand Down Expand Up @@ -57,13 +57,13 @@ func init() {
}
return defaultValue
}
user = env("MYSQL_TEST_USER", "root")
dbuser = env("MYSQL_TEST_USER", "root")
pass = env("MYSQL_TEST_PASS", "")
prot = env("MYSQL_TEST_PROT", "tcp")
addr = env("MYSQL_TEST_ADDR", "localhost:3306")
dbname = env("MYSQL_TEST_DBNAME", "gotest")
netAddr = fmt.Sprintf("%s(%s)", prot, addr)
dsn = fmt.Sprintf("%s:%s@%s/%s?timeout=30s&strict=true", user, pass, netAddr, dbname)
dsn = fmt.Sprintf("%s:%s@%s/%s?timeout=30s&strict=true", dbuser, pass, netAddr, dbname)
c, err := net.Dial(prot, addr)
if err == nil {
available = true
Expand Down Expand Up @@ -1693,7 +1693,7 @@ func TestCustomDial(t *testing.T) {
return net.Dial(prot, addr)
})

db, err := sql.Open("mysql", fmt.Sprintf("%s:%s@mydial(%s)/%s?timeout=30s&strict=true", user, pass, addr, dbname))
db, err := sql.Open("mysql", fmt.Sprintf("%s:%s@mydial(%s)/%s?timeout=30s&strict=true", dbuser, pass, addr, dbname))
if err != nil {
t.Fatalf("error connecting: %s", err.Error())
}
Expand Down Expand Up @@ -1790,7 +1790,7 @@ func TestUnixSocketAuthFail(t *testing.T) {
}
}
t.Logf("socket: %s", socket)
badDSN := fmt.Sprintf("%s:%s@unix(%s)/%s?timeout=30s&strict=true", user, badPass, socket, dbname)
badDSN := fmt.Sprintf("%s:%s@unix(%s)/%s?timeout=30s&strict=true", dbuser, badPass, socket, dbname)
db, err := sql.Open("mysql", badDSN)
if err != nil {
t.Fatalf("error connecting: %s", err.Error())
Expand Down
52 changes: 42 additions & 10 deletions dsn.go
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Expand Up @@ -42,15 +42,16 @@ type Config struct {
ReadTimeout time.Duration // I/O read timeout
WriteTimeout time.Duration // I/O write timeout

AllowAllFiles bool // Allow all files to be used with LOAD DATA LOCAL INFILE
AllowCleartextPasswords bool // Allows the cleartext client side plugin
AllowOldPasswords bool // Allows the old insecure password method
ClientFoundRows bool // Return number of matching rows instead of rows changed
ColumnsWithAlias bool // Prepend table alias to column names
InterpolateParams bool // Interpolate placeholders into query string
MultiStatements bool // Allow multiple statements in one query
ParseTime bool // Parse time values to time.Time
Strict bool // Return warnings as errors
AllowAllFiles bool // Allow all files to be used with LOAD DATA LOCAL INFILE
AllowCleartextPasswords bool // Allows the cleartext client side plugin
AllowOldPasswords bool // Allows the old insecure password method
ClientFoundRows bool // Return number of matching rows instead of rows changed
ColumnsWithAlias bool // Prepend table alias to column names
InterpolateParams bool // Interpolate placeholders into query string
MultiStatements bool // Allow multiple statements in one query
ParseTime bool // Parse time values to time.Time
Strict bool // Return warnings as errors
ConnAttrs map[string]string // Connection Attributes
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A map[string]string is rather heavy. This could be pre-packed into 1 string

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forget what I said, this should stay user-friendly. The Config struct is now exported

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If we move this to a string than we would have to parse it every time we make a connection. So there is a trade-off.

}

// FormatDSN formats the given Config into a DSN string which can be passed to
Expand Down Expand Up @@ -222,6 +223,27 @@ func (cfg *Config) FormatDSN() string {
buf.WriteString(cfg.WriteTimeout.String())
}

if len(cfg.ConnAttrs) != 0 {
if hasParam {
buf.WriteString("&connattrs=(")
} else {
hasParam = true
buf.WriteString("?connattrs=(")
}
firstAttr := true
for attrname, attrvalue := range cfg.ConnAttrs {
if firstAttr {
firstAttr = false
} else {
buf.WriteString(",")
}
buf.WriteString(attrname)
buf.WriteString("=")
buf.WriteString(attrvalue)
}
buf.WriteString(")")
}

// other params
if cfg.Params != nil {
for param, value := range cfg.Params {
Expand Down Expand Up @@ -496,7 +518,17 @@ func parseDSNParams(cfg *Config, params string) (err error) {
if err != nil {
return
}

case "connattrs":
if cfg.ConnAttrs == nil {
cfg.ConnAttrs = make(map[string]string)
}
for _, conn_v := range strings.Split(strings.Trim(value, "()"), ",") {
attr := strings.SplitN(conn_v, "=", 2)
if len(attr) != 2 {
return fmt.Errorf("Invalid connection attribute: %s", conn_v)
}
cfg.ConnAttrs[attr[0]] = attr[1]
}
default:
// lazy init
if cfg.Params == nil {
Expand Down
29 changes: 15 additions & 14 deletions dsn_test.go
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Expand Up @@ -19,20 +19,21 @@ var testDSNs = []struct {
in string
out string
}{
{"username:password@protocol(address)/dbname?param=value", "&{User:username Passwd:password Net:protocol Addr:address DBName:dbname Params:map[param:value] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"username:password@protocol(address)/dbname?param=value&columnsWithAlias=true", "&{User:username Passwd:password Net:protocol Addr:address DBName:dbname Params:map[param:value] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:true InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"username:password@protocol(address)/dbname?param=value&columnsWithAlias=true&multiStatements=true", "&{User:username Passwd:password Net:protocol Addr:address DBName:dbname Params:map[param:value] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:true InterpolateParams:false MultiStatements:true ParseTime:false Strict:false}"},
{"user@unix(/path/to/socket)/dbname?charset=utf8", "&{User:user Passwd: Net:unix Addr:/path/to/socket DBName:dbname Params:map[charset:utf8] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"user:password@tcp(localhost:5555)/dbname?charset=utf8&tls=true", "&{User:user Passwd:password Net:tcp Addr:localhost:5555 DBName:dbname Params:map[charset:utf8] Collation:utf8_general_ci Loc:UTC TLSConfig:true tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"user:password@tcp(localhost:5555)/dbname?charset=utf8mb4,utf8&tls=skip-verify", "&{User:user Passwd:password Net:tcp Addr:localhost:5555 DBName:dbname Params:map[charset:utf8mb4,utf8] Collation:utf8_general_ci Loc:UTC TLSConfig:skip-verify tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"user:password@/dbname?loc=UTC&timeout=30s&readTimeout=1s&writeTimeout=1s&allowAllFiles=1&clientFoundRows=true&allowOldPasswords=TRUE&collation=utf8mb4_unicode_ci", "&{User:user Passwd:password Net:tcp Addr:127.0.0.1:3306 DBName:dbname Params:map[] Collation:utf8mb4_unicode_ci Loc:UTC TLSConfig: tls:<nil> Timeout:30s ReadTimeout:1s WriteTimeout:1s AllowAllFiles:true AllowCleartextPasswords:false AllowOldPasswords:true ClientFoundRows:true ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"user:p@ss(word)@tcp([de:ad:be:ef::ca:fe]:80)/dbname?loc=Local", "&{User:user Passwd:p@ss(word) Net:tcp Addr:[de:ad:be:ef::ca:fe]:80 DBName:dbname Params:map[] Collation:utf8_general_ci Loc:Local TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"/dbname", "&{User: Passwd: Net:tcp Addr:127.0.0.1:3306 DBName:dbname Params:map[] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"@/", "&{User: Passwd: Net:tcp Addr:127.0.0.1:3306 DBName: Params:map[] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"/", "&{User: Passwd: Net:tcp Addr:127.0.0.1:3306 DBName: Params:map[] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"", "&{User: Passwd: Net:tcp Addr:127.0.0.1:3306 DBName: Params:map[] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"user:p@/ssword@/", "&{User:user Passwd:p@/ssword Net:tcp Addr:127.0.0.1:3306 DBName: Params:map[] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"unix/?arg=%2Fsome%2Fpath.ext", "&{User: Passwd: Net:unix Addr:/tmp/mysql.sock DBName: Params:map[arg:/some/path.ext] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false}"},
{"username:password@protocol(address)/dbname?param=value", "&{User:username Passwd:password Net:protocol Addr:address DBName:dbname Params:map[param:value] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"username:password@protocol(address)/dbname?param=value&connattrs=(foo=bar)", "&{User:username Passwd:password Net:protocol Addr:address DBName:dbname Params:map[param:value] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[foo:bar]}"},
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That is very weird syntax. Also wrong naming convention

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What would you prefer for nested key-value pairs?

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The "old" way, which was never standardized, was to set key[nestedkey0]=value&key[nestedkey1]=another value. But I think unencoded square brackets are now explicitly disallowed in URIs since it is used for IPv6 hosts.

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In other words: This doesn't look intuitive to me, let's look what others do in case of nested keys nowadays.

{"username:password@protocol(address)/dbname?param=value&columnsWithAlias=true", "&{User:username Passwd:password Net:protocol Addr:address DBName:dbname Params:map[param:value] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:true InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"username:password@protocol(address)/dbname?param=value&columnsWithAlias=true&multiStatements=true", "&{User:username Passwd:password Net:protocol Addr:address DBName:dbname Params:map[param:value] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:true InterpolateParams:false MultiStatements:true ParseTime:false Strict:false ConnAttrs:map[]}"},
{"user@unix(/path/to/socket)/dbname?charset=utf8", "&{User:user Passwd: Net:unix Addr:/path/to/socket DBName:dbname Params:map[charset:utf8] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"user:password@tcp(localhost:5555)/dbname?charset=utf8&tls=true", "&{User:user Passwd:password Net:tcp Addr:localhost:5555 DBName:dbname Params:map[charset:utf8] Collation:utf8_general_ci Loc:UTC TLSConfig:true tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"user:password@tcp(localhost:5555)/dbname?charset=utf8mb4,utf8&tls=skip-verify", "&{User:user Passwd:password Net:tcp Addr:localhost:5555 DBName:dbname Params:map[charset:utf8mb4,utf8] Collation:utf8_general_ci Loc:UTC TLSConfig:skip-verify tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"user:password@/dbname?loc=UTC&timeout=30s&readTimeout=1s&writeTimeout=1s&allowAllFiles=1&clientFoundRows=true&allowOldPasswords=TRUE&collation=utf8mb4_unicode_ci", "&{User:user Passwd:password Net:tcp Addr:127.0.0.1:3306 DBName:dbname Params:map[] Collation:utf8mb4_unicode_ci Loc:UTC TLSConfig: tls:<nil> Timeout:30s ReadTimeout:1s WriteTimeout:1s AllowAllFiles:true AllowCleartextPasswords:false AllowOldPasswords:true ClientFoundRows:true ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"user:p@ss(word)@tcp([de:ad:be:ef::ca:fe]:80)/dbname?loc=Local", "&{User:user Passwd:p@ss(word) Net:tcp Addr:[de:ad:be:ef::ca:fe]:80 DBName:dbname Params:map[] Collation:utf8_general_ci Loc:Local TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"/dbname", "&{User: Passwd: Net:tcp Addr:127.0.0.1:3306 DBName:dbname Params:map[] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"@/", "&{User: Passwd: Net:tcp Addr:127.0.0.1:3306 DBName: Params:map[] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"/", "&{User: Passwd: Net:tcp Addr:127.0.0.1:3306 DBName: Params:map[] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"", "&{User: Passwd: Net:tcp Addr:127.0.0.1:3306 DBName: Params:map[] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"user:p@/ssword@/", "&{User:user Passwd:p@/ssword Net:tcp Addr:127.0.0.1:3306 DBName: Params:map[] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
{"unix/?arg=%2Fsome%2Fpath.ext", "&{User: Passwd: Net:unix Addr:/tmp/mysql.sock DBName: Params:map[arg:/some/path.ext] Collation:utf8_general_ci Loc:UTC TLSConfig: tls:<nil> Timeout:0 ReadTimeout:0 WriteTimeout:0 AllowAllFiles:false AllowCleartextPasswords:false AllowOldPasswords:false ClientFoundRows:false ColumnsWithAlias:false InterpolateParams:false MultiStatements:false ParseTime:false Strict:false ConnAttrs:map[]}"},
}

func TestDSNParser(t *testing.T) {
Expand Down
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