94 lines
2.4 KiB
Go
94 lines
2.4 KiB
Go
package helpers
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import (
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"crypto/rand"
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"encoding/base64"
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"fmt"
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"net/http"
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"time"
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"github.com/thermokarst/bactdb/Godeps/_workspace/src/github.com/gorilla/context"
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"github.com/thermokarst/bactdb/Godeps/_workspace/src/github.com/gorilla/schema"
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"github.com/thermokarst/bactdb/Godeps/_workspace/src/github.com/lib/pq"
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"github.com/thermokarst/bactdb/types"
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)
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var (
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// StatusUnprocessableEntity is the HTTP status when Unprocessable Entity.
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StatusUnprocessableEntity = 422
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// MustProvideAValue when value required.
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MustProvideAValue = "Must provide a value"
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// SchemaDecoder for decoding schemas.
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SchemaDecoder = schema.NewDecoder()
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)
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// ListOptions specifies general pagination options for fetching a list of results
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type ListOptions struct {
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PerPage int64 `url:",omitempty" json:",omitempty"`
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Page int64 `url:",omitempty" json:",omitempty"`
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IDs []int64 `url:",omitempty" json:",omitempty" schema:"ids[]"`
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Genus string
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}
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// MeasurementListOptions is an extension of ListOptions.
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type MeasurementListOptions struct {
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ListOptions
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Strains []int64 `schema:"strain_ids"`
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Characteristics []int64 `schema:"characteristic_ids"`
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}
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// ValsIn emits X IN (A, B, C) SQL statements
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func ValsIn(attribute string, values []int64, vals *[]interface{}, counter *int64) string {
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if len(values) == 1 {
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return fmt.Sprintf("%v=%v", attribute, values[0])
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}
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m := fmt.Sprintf("%v IN (", attribute)
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for _, id := range values {
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m = m + fmt.Sprintf("$%v,", *counter)
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*vals = append(*vals, id)
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*counter++
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}
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m = m[:len(m)-1] + ")"
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return m
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}
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// CurrentTime returns current time
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func CurrentTime() types.NullTime {
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return types.NullTime{
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pq.NullTime{
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Time: time.Now(),
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Valid: true,
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},
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}
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}
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// GenerateNonce generates a nonce
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func GenerateNonce() (string, error) {
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// TODO: move this
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b := make([]byte, 32)
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_, err := rand.Read(b)
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if err != nil {
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return "", err
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}
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return base64.URLEncoding.EncodeToString(b), nil
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}
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// GetClaims gets request claims from Authorization header
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func GetClaims(r *http.Request) types.Claims {
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con := context.Get(r, "claims")
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var claims types.Claims
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if con != nil {
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claims = con.(types.Claims)
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}
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origin := r.Header.Get("Origin")
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if origin != "" {
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claims.Ref = origin
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}
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return claims
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}
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// CanEdit is an authorization helper for editing entities
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func CanEdit(claims *types.Claims, author int64) bool {
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return claims.Sub == author || claims.Role == "A"
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}
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