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time.go
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time.go
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/**
* Copyright 2019 Confluent Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package kafka
import "C"
import (
"context"
"time"
)
const (
cTimeoutInfinite = C.int(-1) // Blocks indefinitely until completion.
cTimeoutNoWait = C.int(0) // Returns immediately without blocking.
)
// cTimeoutFromContext returns the remaining time after which work done on behalf of this context
// should be canceled, in milliseconds.
//
// If no deadline/timeout is set, or if the timeout does not fit in an int32, it returns
// cTimeoutInfinite;
// If there is no time left in this context, it returns cTimeoutNoWait.
func cTimeoutFromContext(ctx context.Context) C.int {
if ctx == nil {
return cTimeoutInfinite
}
timeout, hasTimeout := timeout(ctx)
if !hasTimeout {
return cTimeoutInfinite
}
if timeout <= 0 {
return cTimeoutNoWait
}
timeoutMs := int64(timeout / time.Millisecond)
if int64(int32(timeoutMs)) < timeoutMs {
return cTimeoutInfinite
}
return C.int(timeoutMs)
}