6362b2887b
On go1.20+ it is no longer possible to directly copy a cgo-enabled library into a docker container. For this reason, this commit adds a flag to commands that automatically make them fail with an appropriate message if cgo is enabled.
82 lines
2.5 KiB
Go
82 lines
2.5 KiB
Go
package dis
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import (
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"os"
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"github.com/FAU-CDI/wisski-distillery/internal/cli"
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"github.com/FAU-CDI/wisski-distillery/internal/config"
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"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
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"github.com/tkw1536/goprogram/exit"
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"github.com/tkw1536/pkglib/cgo"
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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: %q",
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}
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// An error to be returned when cgo is enabled unexpectedly.
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var CGoEnabled = exit.Error{
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ExitCode: exit.ExitGeneralArguments,
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Message: "this functionality is only available when cgo support is disabled. Set `CGO_ENABLED=0' at build time and try again",
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}
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// NewDistillery creates a new distillery from the provided flags
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func NewDistillery(params cli.Params, flags cli.Flags, req cli.Requirements) (dis *Distillery, err error) {
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// check cgo support to prevent weird error messages
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// this has to happen either when we are inside docker, or when explicity requested by the command.
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if cgo.Enabled && (flags.InternalInDocker || req.FailOnCgo) {
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return nil, CGoEnabled
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}
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dis = new(Distillery)
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dis.Still.Upstream = component.Upstream{
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SQL: component.HostPort{Host: "127.0.0.1", Port: 3306},
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Triplestore: component.HostPort{Host: "127.0.0.1", Port: 7200},
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Solr: component.HostPort{Host: "127.0.0.1", Port: 8983},
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}
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// we are within the docker
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//
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// so setup the ports to connect everything to properly.
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// also override some of the parameters for the environment.
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if flags.InternalInDocker {
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dis.Still.Upstream.SQL = component.HostPort{Host: "sql", Port: 3306}
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dis.Still.Upstream.Triplestore = component.HostPort{Host: "triplestore", Port: 7200}
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dis.Still.Upstream.Solr = component.HostPort{Host: "solr", Port: 8983}
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params.ConfigPath = os.Getenv("CONFIG_PATH")
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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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