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package checkpoint
import (
"encoding/json"
"fmt"
"net/http"
"net/url"
"os"
"strconv"
"time"
"github.com/hashicorp/go-cleanhttp"
)
// VersionsParams are the parameters for a versions request.
type VersionsParams struct {
// Service is used to lookup the correct service.
Service string
// Product is used to filter the version contraints.
Product string
// Force, if true, will force the check even if CHECKPOINT_DISABLE
// is set. Within HashiCorp products, this is ONLY USED when the user
// specifically requests it. This is never automatically done without
// the user's consent.
Force bool
}
// VersionsResponse is the response for a versions request.
type VersionsResponse struct {
Service string `json:"service"`
Product string `json:"product"`
Minimum string `json:"minimum"`
Maximum string `json:"maximum"`
Excluding []string `json:"excluding"`
}
// Versions returns the version constrains for a given service and product.
func Versions(p *VersionsParams) (*VersionsResponse, error) {
if enabled := os.Getenv("CHECKPOINT_ENABLE"); enabled == "" && !p.Force {
return &VersionsResponse{}, nil
}
// Set a default timeout of 1 sec for the versions request (in milliseconds)
timeout := 1000
if _, err := strconv.Atoi(os.Getenv("CHECKPOINT_TIMEOUT")); err == nil {
timeout, _ = strconv.Atoi(os.Getenv("CHECKPOINT_TIMEOUT"))
}
v := url.Values{}
v.Set("product", p.Product)
u := &url.URL{
Scheme: "https",
Host: "checkpoint-api.hashicorp.com",
Path: fmt.Sprintf("/v1/versions/%s", p.Service),
RawQuery: v.Encode(),
}
req, err := http.NewRequest("GET", u.String(), nil)
if err != nil {
return nil, err
}
req.Header.Set("Accept", "application/json")
req.Header.Set("User-Agent", "HashiCorp/go-checkpoint")
client := cleanhttp.DefaultClient()
// We use a short timeout since checking for new versions is not critical
// enough to block on if checkpoint is broken/slow.
client.Timeout = time.Duration(timeout) * time.Millisecond
resp, err := client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
return nil, fmt.Errorf("Unknown status: %d", resp.StatusCode)
}
result := &VersionsResponse{}
if err := json.NewDecoder(resp.Body).Decode(result); err != nil {
return nil, err
}
return result, nil
}
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