first working version

pkg/api/v1/client/client.go

@@ -0,0 +1,85 @@
+package client
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	apiclient "git.giftfish.de/ston1th/haproxy-lb/pkg/api/client"
+	"git.giftfish.de/ston1th/haproxy-lb/pkg/api/v1/schema"
+)
+
+var (
+	ErrClientIsNil = errors.New("client is nil")
+	base           = "/" + schema.Version
+)
+
+type Client struct {
+	c *apiclient.Client
+}
+
+func NewClient(c *apiclient.Client) (*Client, error) {
+	if c == nil {
+		return nil, ErrClientIsNil
+	}
+	return &Client{c}, nil
+}
+
+func (c *Client) GetLoadBalancers(ctx context.Context) (lbs map[string]schema.LoadBalancer, err error) {
+	return c.GetLoadBalancersWithCluster(ctx, "")
+}
+
+func (c *Client) GetLoadBalancersWithCluster(ctx context.Context, cluster string) (lbs map[string]schema.LoadBalancer, err error) {
+	path := base + "/lb"
+	if cluster != "" {
+		path += "/" + cluster
+	}
+	req, err := c.c.NewRequest(ctx, "GET", path, nil)
+	if err != nil {
+		return
+	}
+	lbs = make(map[string]schema.LoadBalancer)
+	_, err = c.c.Do(req, &lbs)
+	return
+}
+
+func (c *Client) GetLoadBalancer(ctx context.Context, cluster, name string) (lb schema.LoadBalancer, err error) {
+	path := fmt.Sprintf("%s/lb/%s/%s", base, cluster, name)
+	req, err := c.c.NewRequest(ctx, "GET", path, nil)
+	if err != nil {
+		return
+	}
+	_, err = c.c.Do(req, &lb)
+	return
+}
+
+func (c *Client) CreateLoadBalancer(ctx context.Context, cluster, name string, lb schema.LoadBalancer) (err error) {
+	buf := new(bytes.Buffer)
+	path := fmt.Sprintf("%s/lb/%s/%s", base, cluster, name)
+	err = lb.ValidateClient()
+	if err != nil {
+		return
+	}
+	err = json.NewEncoder(buf).Encode(lb)
+	if err != nil {
+		return
+	}
+	req, err := c.c.NewRequest(ctx, "POST", path, buf)
+	if err != nil {
+		return
+	}
+	_, err = c.c.Do(req, nil)
+	return
+}
+
+func (c *Client) DeleteLoadBalancer(ctx context.Context, cluster, name string) (err error) {
+	path := fmt.Sprintf("%s/lb/%s/%s", base, cluster, name)
+	req, err := c.c.NewRequest(ctx, "DELETE", path, nil)
+	if err != nil {
+		return
+	}
+	_, err = c.c.Do(req, nil)
+	return
+}