func getScanConfiguration(a httpRequestArgs) (*scanConfigImpl, errors.Error) {
scan_consistency_field, err := a.getString(SCAN_CONSISTENCY, "NOT_BOUNDED")
if err != nil {
return nil, err
}
scan_level := newScanConsistency(scan_consistency_field)
if scan_level == server.UNDEFINED_CONSISTENCY {
return nil, errors.NewServiceErrorUnrecognizedValue(SCAN_CONSISTENCY, scan_consistency_field)
}
scan_wait, err := a.getDuration(SCAN_WAIT)
if err != nil {
return nil, err
}
scan_vector, err := a.getScanVector()
if err != nil {
return nil, err
}
if scan_level == server.AT_PLUS && scan_vector == nil {
return nil, errors.NewServiceErrorMissingValue(SCAN_VECTOR)
}
return &scanConfigImpl{
scan_level: scan_level,
scan_wait: scan_wait,
scan_vector: scan_vector,
}, nil
}
func getScanConfiguration(a httpRequestArgs) (*scanConfigImpl, errors.Error) {
scan_consistency_field, err := a.getString(SCAN_CONSISTENCY, "NOT_BOUNDED")
if err != nil {
return nil, err
}
scan_level := newScanConsistency(scan_consistency_field)
if scan_level == server.UNDEFINED_CONSISTENCY {
return nil, errors.NewServiceErrorUnrecognizedValue(SCAN_CONSISTENCY, scan_consistency_field)
}
scan_wait, err := a.getDuration(SCAN_WAIT)
if err != nil {
return nil, err
}
scan_vector, err := a.getScanVector()
if err != nil {
return nil, err
}
scan_vectors, err := a.getScanVectors()
if err != nil {
return nil, err
}
var scan_vector_source timestamp.ScanVectorSource
if scan_vector == nil {
if scan_vectors == nil {
if scan_level == server.AT_PLUS && scan_vector == nil && scan_vectors == nil {
return nil, errors.NewServiceErrorMissingValue(SCAN_VECTOR)
}
scan_vector_source = &ZeroScanVectorSource{}
} else {
defaultNamespace, err := a.getString(NAMESPACE, "default")
if err != nil {
return nil, err
}
scan_vector_source = newMultipleScanVectorSource(defaultNamespace, scan_vectors)
}
} else {
if scan_vectors == nil {
scan_vector_source = &singleScanVectorSource{scan_vector: scan_vector}
} else {
// Not both scan_vector and scan_vectors.
return nil, errors.NewServiceErrorMultipleValues("scan_vector and scan_vectors")
}
}
return &scanConfigImpl{
scan_level: scan_level,
scan_wait: scan_wait,
scan_vector_source: scan_vector_source,
}, nil
}
func getCredentials(a httpRequestArgs, auths []string) (datastore.Credentials, errors.Error) {
cred_data, err := a.getCredentials()
if err != nil {
return nil, err
}
if len(cred_data) > 0 {
// Credentials are in request parameters:
creds := datastore.Credentials{}
for _, cred := range cred_data {
user, user_ok := cred["user"]
pass, pass_ok := cred["pass"]
if user_ok && pass_ok {
creds[user] = pass
} else {
err = errors.NewServiceErrorMissingValue("user or pass")
break
}
}
return creds, nil
}
if len(auths) > 0 {
// Credentials are in http header:
auth := auths[0]
if strings.HasPrefix(auth, "Basic ") {
encoded_creds := strings.Split(auth, " ")[1]
decoded_creds, err := base64.StdEncoding.DecodeString(encoded_creds)
if err != nil {
return nil, errors.NewServiceErrorBadValue(err, CREDS)
}
// Authorization header is in format "user:pass"
// per http://tools.ietf.org/html/rfc1945#section-10.2
u_details := strings.Split(string(decoded_creds), ":")
creds := datastore.Credentials{}
switch len(u_details) {
case 2:
creds[u_details[0]] = u_details[1]
case 3:
// Support usernames like "local:xxx" or "admin:xxx"
creds[strings.Join(u_details[:2], ":")] = u_details[2]
default:
// Authorization header format is incorrect
return nil, errors.NewServiceErrorBadValue(nil, CREDS)
}
return creds, nil
}
}
return nil, err
}
// A named argument is an argument of the form: $<identifier>=json_value
func (this *urlArgs) getNamedArgs() (map[string]value.Value, errors.Error) {
var args map[string]value.Value
for name, _ := range this.req.Form {
if !strings.HasPrefix(name, "$") {
continue
}
arg, err := this.formValue(name)
if err != nil {
return args, err
}
if len(arg) == 0 {
//This is an error - there _has_ to be a value for a named argument
return args, errors.NewServiceErrorMissingValue(fmt.Sprintf("named argument %s", name))
}
args = addNamedArg(args, name, value.NewValue([]byte(arg)))
}
return args, nil
}
func newHttpRequest(resp http.ResponseWriter, req *http.Request, bp BufferPool, size int) *httpRequest {
var httpArgs httpRequestArgs
var err errors.Error
// Limit body size in case of denial-of-service attack
req.Body = http.MaxBytesReader(resp, req.Body, int64(size))
e := req.ParseForm()
if e != nil {
err = errors.NewServiceErrorBadValue(e, "request form")
}
if err != nil && req.Method != "GET" && req.Method != "POST" {
err = errors.NewServiceErrorHTTPMethod(req.Method)
}
err = contentNegotiation(resp, req)
if err == nil {
httpArgs, err = getRequestParams(req)
}
var statement string
if err == nil {
statement, err = httpArgs.getStatement()
}
var prepared *plan.Prepared
if err == nil {
prepared, err = getPrepared(httpArgs)
plan, plan_err := getEncodedPlan(httpArgs)
if err != nil && err.Code() == errors.NO_SUCH_PREPARED {
if plan_err != nil {
err = plan_err
}
if plan_err == nil && plan != nil {
prepared = plan
err = nil
}
}
if err == nil && plan_err != nil {
err = plan_err
}
if prepared != nil && plan != nil && prepared.EncodedPlan() != plan.EncodedPlan() {
err = errors.NewPreparedEncodingMismatchError(prepared.Name())
}
}
if err == nil && statement == "" && prepared == nil {
err = errors.NewServiceErrorMissingValue("statement or prepared")
}
var namedArgs map[string]value.Value
if err == nil {
namedArgs, err = httpArgs.getNamedArgs()
}
var positionalArgs value.Values
if err == nil {
positionalArgs, err = httpArgs.getPositionalArgs()
}
var namespace string
if err == nil {
namespace, err = httpArgs.getString(NAMESPACE, "")
}
var timeout time.Duration
if err == nil {
timeout, err = httpArgs.getDuration(TIMEOUT)
}
var max_parallelism int
if err == nil {
var maxp string
maxp, err = httpArgs.getString(MAX_PARALLELISM, "")
if err == nil && maxp != "" {
var e error
max_parallelism, e = strconv.Atoi(maxp)
if e != nil {
err = errors.NewServiceErrorBadValue(e, "max parallelism")
}
}
}
var readonly value.Tristate
if err == nil {
readonly, err = getReadonly(httpArgs, req.Method == "GET")
}
var metrics value.Tristate
if err == nil {
metrics, err = httpArgs.getTristate(METRICS)
}
var format Format
if err == nil {
format, err = getFormat(httpArgs)
}
if err == nil && format != JSON {
err = errors.NewServiceErrorNotImplemented("format", format.String())
}
var signature value.Tristate
if err == nil {
signature, err = httpArgs.getTristate(SIGNATURE)
}
var compression Compression
if err == nil {
compression, err = getCompression(httpArgs)
}
if err == nil && compression != NONE {
err = errors.NewServiceErrorNotImplemented("compression", compression.String())
}
var encoding Encoding
if err == nil {
encoding, err = getEncoding(httpArgs)
}
if err == nil && encoding != UTF8 {
err = errors.NewServiceErrorNotImplemented("encoding", encoding.String())
}
var pretty value.Tristate
if err == nil {
pretty, err = httpArgs.getTristate(PRETTY)
}
if err == nil && pretty == value.FALSE {
err = errors.NewServiceErrorNotImplemented("pretty", "false")
}
var consistency *scanConfigImpl
if err == nil {
consistency, err = getScanConfiguration(httpArgs)
}
var creds datastore.Credentials
if err == nil {
creds, err = getCredentials(httpArgs, req.Header["Authorization"])
}
client_id := ""
if err == nil {
client_id, err = getClientID(httpArgs)
}
base := server.NewBaseRequest(statement, prepared, namedArgs, positionalArgs, namespace,
max_parallelism, readonly, metrics, signature, consistency, client_id, creds)
rv := &httpRequest{
BaseRequest: *base,
resp: resp,
req: req,
requestNotify: make(chan bool, 1),
}
rv.SetTimeout(rv, timeout)
rv.writer = NewBufferedWriter(rv, bp)
// Abort if client closes connection; alternatively, return when request completes.
closeNotify := resp.(http.CloseNotifier).CloseNotify()
closeNotifier := func() {
select {
case <-closeNotify:
rv.Expire()
return
case <-rv.requestNotify:
return
}
}
go closeNotifier()
if err != nil {
rv.Fail(err)
}
return rv
}
