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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| package cassandra | ||
|
|
||
| import ( | ||
| "github.com/gocql/gocql" | ||
| ) | ||
|
|
||
| type Client struct { | ||
| *gocql.Session | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| package cassandra | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "github.com/gocql/gocql" | ||
| api "kubedb.dev/apimachinery/apis/kubedb/v1alpha2" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "strconv" | ||
| ) | ||
|
|
||
| type KubeDBClientBuilder struct { | ||
| kc client.Client | ||
| db *api.Cassandra | ||
| url string | ||
| podName string | ||
| port *int | ||
| ctx context.Context | ||
| } | ||
|
|
||
| func NewKubeDBClientBuilder(kc client.Client, db *api.Cassandra) *KubeDBClientBuilder { | ||
| return &KubeDBClientBuilder{ | ||
| kc: kc, | ||
| db: db, | ||
| } | ||
| } | ||
|
|
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| func (o *KubeDBClientBuilder) WithURL(url string) *KubeDBClientBuilder { | ||
| o.url = url | ||
| return o | ||
| } | ||
|
|
||
| func (o *KubeDBClientBuilder) WithPort(port *int) *KubeDBClientBuilder { | ||
| o.port = port | ||
| return o | ||
| } | ||
|
|
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| func (o *KubeDBClientBuilder) WithContext(ctx context.Context) *KubeDBClientBuilder { | ||
| o.ctx = ctx | ||
| return o | ||
| } | ||
| func (o *KubeDBClientBuilder) GetCassandraClient() (*Client, error) { | ||
| host := "127.0.0.1" | ||
| port := "9042" | ||
| username := "cluster1-superuser" | ||
| password := "X-XLZ0jxouJbAbg0KAsPW0a1E0GofwK12cWOA9WyHYCjdede2UBImQ" | ||
|
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| cluster := gocql.NewCluster(host) | ||
| p, err := strconv.Atoi(port) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("invalid port: %v", err) | ||
| } | ||
| cluster.Port = p | ||
| cluster.Keyspace = "system" | ||
| //cluster.Consistency = gocql.Any //ANY ConsistencyLevel is only supported for writes | ||
| cluster.Consistency = gocql.Quorum | ||
| cluster.Authenticator = gocql.PasswordAuthenticator{ | ||
| Username: username, | ||
| Password: password, | ||
| } | ||
| session, err := cluster.CreateSession() | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to connect to Cassandra cluster: %v", err) | ||
| } | ||
|
|
||
| return &Client{session}, nil | ||
| } | ||
|
|
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| // CreateKeyspace creates a keyspace | ||
| func (c *Client) CreateKeyspace() error { | ||
| return c.Query(`CREATE KEYSPACE IF NOT EXISTS mykeyspace WITH replication = {'class': 'SimpleStrategy', 'replication_factor': '2'}`).Exec() | ||
| } | ||
|
|
||
| // CreateTable creates a table | ||
| func (c *Client) CreateTable() error { | ||
| return c.Query(`CREATE TABLE IF NOT EXISTS mykeyspace.users ( | ||
| id UUID PRIMARY KEY, | ||
| name TEXT, | ||
| age INT, | ||
| email TEXT | ||
| )`).Exec() | ||
| } | ||
|
|
||
| // InsertUser inserts a user into the table | ||
| func (c *Client) InsertUser(id gocql.UUID, name string, age int, email string) error { | ||
| return c.Query(`INSERT INTO mykeyspace.users (id, name, age, email) VALUES (?, ?, ?, ?)`, | ||
| id, name, age, email).Exec() | ||
| } | ||
| func (c *Client) DeleteUser(id gocql.UUID) error { | ||
| return c.Query(`DELETE FROM mykeyspace.users WHERE id = ?`, id).Exec() | ||
| } | ||
|
|
||
| // QueryUser queries a user by ID | ||
| func (c *Client) QueryUser(id gocql.UUID) (string, int, string, error) { | ||
| var name string | ||
| var age int | ||
| var email string | ||
|
|
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| iter := c.Query(`SELECT name, age, email FROM mykeyspace.users WHERE id = ?`, id).Iter() | ||
| if iter.Scan(&name, &age, &email) { | ||
| if err := iter.Close(); err != nil { | ||
| return "", 0, "", fmt.Errorf("unable to query data: %v", err) | ||
| } | ||
| return name, age, email, nil | ||
| } | ||
| return "", 0, "", fmt.Errorf("no data found") | ||
| } |
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