34 lines
1.0 KiB
Go
34 lines
1.0 KiB
Go
package vm
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import (
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"context"
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"os"
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"github.com/filecoin-project/go-state-types/network"
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"github.com/filecoin-project/lotus/chain/types"
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"github.com/ipfs/go-cid"
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)
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type Interface interface {
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// Applies the given message onto the VM's current state, returning the result of the execution
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ApplyMessage(ctx context.Context, cmsg types.ChainMsg) (*ApplyRet, error)
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// Same as above but for system messages (the Cron invocation and block reward payments).
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// Must NEVER fail.
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ApplyImplicitMessage(ctx context.Context, msg *types.Message) (*ApplyRet, error)
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// Flush all buffered objects into the state store provided to the VM at construction.
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Flush(ctx context.Context) (cid.Cid, error)
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}
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func NewVM(ctx context.Context, opts *VMOpts) (Interface, error) {
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if opts.NetworkVersion >= network.Version16 {
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return NewFVM(ctx, opts)
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}
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// Remove after v16 upgrade, this is only to support testing and validation of the FVM
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if os.Getenv("LOTUS_USE_FVM_EXPERIMENTAL") == "1" {
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return NewFVM(ctx, opts)
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}
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return NewLegacyVM(ctx, opts)
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}
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