bride of README typo fixups

This commit is contained in:
andrew fabbro 2016-09-01 10:19:55 -07:00
parent 3c1a09053e
commit 84577f05d1
1 changed files with 37 additions and 15 deletions

View File

@ -34,20 +34,23 @@ gorqlite should be considered alpha until more testers share their experiences.
// these URLs are just generic database URLs, not rqlite API URLs,
// so you don't need to worry about the various rqlite paths ("/db/query"), etc.
// just supply the base url and not "db" or anything after it.
// note that you cannot specify a database name in the URL (this is sqlite, after all).
conn, err := gorqlite.Open("rqlite,"http://") // connects to localhost on 4001 without auth
conn, err := gorqlite.Open("rqlite,"https://") // same but with https
conn, err := gorqlite.Open("rqlite","https://localhost:4001/") // same only explicitly
// yes, you need the http or https
// no, you cannot specify a database name in the URL (this is sqlite, after all).
conn, err := gorqlite.Open("http://") // connects to localhost on 4001 without auth
conn, err := gorqlite.Open("https://") // same but with https
conn, err := gorqlite.Open("https://localhost:4001/") // same only explicitly
// with auth:
conn, err := sql.Open("rqlite","https://mary:secret2@localhost:4001/")
conn, err := sql.Open("https://mary:secret2@localhost:4001/")
// different server, setting the rqlite consistency level
conn, err := sql.Open("rqlite,"https://mary:secret2@server1.example.com:4001/?level=none")
conn, err := sql.Open("https://mary:secret2@server1.example.com:4001/?level=none")
// same without auth, setting the rqlite consistency level
conn, err := sql.Open("rqlite,"https://server2.example.com:4001/?level=weak")
conn, err := sql.Open("https://server2.example.com:4001/?level=weak")
// different port, setting the rqlite consistency level and timeout
conn, err := sql.Open("rqlite,"https://localhost:2265/?level=strong&timeout=30")
conn, err := sql.Open("https://localhost:2265/?level=strong&timeout=30")
// change our minds
conn.SetConsistencyLevel("none")
@ -65,18 +68,29 @@ statements = append(statements,fmt.Sprintf(pattern,125718,"Speed Gibson","Speed"
statements = append(statements,fmt.Sprintf(pattern,209166,"Clint Barlow","Clint"))
statements = append(statements,fmt.Sprintf(pattern,44107,"Barney Dunlap","Barney"))
results, err := conn.Write(statements)
fmt.Printf("affected %d rows\n",results.NumRows)
// now we have an array of []WriteResult
for n, v := range WriteResult {
fmt.Printf("for result %d, %d rows were affected\n",n,v.RowsAffected)
if ( v.Err != nil ) {
fmt.Printf(" we have this error: %s\n",v.Err.Error())
}
}
// or if we have an auto_increment column
res, err := conn.Write("INSERT INTO foo (name) values ('bar')")
res, err := conn.WriteOne("INSERT INTO foo (name) values ('bar')")
fmt.Printf("last insert id was %d\n",res.LastInsertID)
// just like database/sql, you're required to Next() before any Scan() or Map()
// note that rqlite is only going to send JSON types - see the encoding/json docs
// which means all numbers are float64s. gorqlite will convert to int64s for you
// because it is convenient but other formats you will have to handle yourself
var id int64
var name string
rows, err := conn.Query("select id, name from secret_agents where id > 500")
rows, err := conn.QueryOne("select id, name from secret_agents where id > 500")
fmt.Printf("query returned %d rows\n",rows.NumRows)
for rows.Next() {
err := response.Scan(&id, &name)
@ -84,7 +98,12 @@ for rows.Next() {
fmt.Printf("there are %d rows overall%d\n",response.NumRows)
}
// alternatively
// just like WriteOne()/Write(), QueryOne() takes a single statement,
// while Query() takes a []string. You'd only use Query() if you wanted
// to transactionally group a bunch of queries, and then you'd get back
// a []QueryResult
// alternatively, use Next()/Map()
for rows.Next() {
m, err := response.Map()
@ -94,9 +113,12 @@ for rows.Next() {
}
// get rqlite cluster information
fmt.Println("current leader is",conn.Leader())
for peer := range conn.Peers() {
fmt.Println("cluster peer:",peer)
leader, err := conn.Leader()
// err could be set if the cluster wasn't answering, etc.
fmt.Println("current leader is"leader)
peers, err := conn.Peers()
for n, p := range peers {
fmt.Printf("cluster peer %d: %s\n",n,p)
}
// turn on debug tracing to the io.Writer of your choice.