62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
package wisski
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import (
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"os"
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"github.com/FAU-CDI/wisski-distillery/internal/config"
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"github.com/FAU-CDI/wisski-distillery/internal/core"
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"github.com/tkw1536/goprogram/exit"
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)
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var errNoConfigFile = exit.Error{
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ExitCode: exit.ExitGeneralArguments,
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Message: "Configuration File does not exist",
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}
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var errOpenConfig = exit.Error{
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ExitCode: exit.ExitGeneralArguments,
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Message: "error loading configuration file: %s",
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}
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// NewDistillery creates a new distillery from the provided flags
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func NewDistillery(params core.Params, flags core.Flags, req core.Requirements) (dis *Distillery, err error) {
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dis = &Distillery{
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Upstream: Upstream{
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SQL: "127.0.0.1:3306",
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Triplestore: "127.0.0.1:7200",
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},
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}
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if flags.InternalInDocker {
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dis.Upstream.SQL = "sql:3306"
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dis.Upstream.Triplestore = "triplestore:7200"
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}
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// if we don't need to load the config, there is nothing to do
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if !req.NeedsDistillery {
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return
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}
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// try to find the configuration file
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cfg := flags.ConfigPath // command line flags first
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if cfg == "" {
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cfg = params.ConfigPath // then globally provided files
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}
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if cfg == "" {
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return nil, errNoConfigFile
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}
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// open the config file!
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f, err := os.Open(params.ConfigPath)
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if err != nil {
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return nil, errOpenConfig.WithMessageF(err)
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}
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defer f.Close()
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// unmarshal the config
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dis.Config = &config.Config{
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ConfigPath: cfg,
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}
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err = dis.Config.Unmarshal(f)
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return
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}
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