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feat: Add support for passing in environment variables to the WASM module #831

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mattjohnsonpint merged 2 commits into from
Apr 29, 2025
Merged

feat: Add support for passing in environment variables to the WASM module #831

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c10de43
Add support for passing in environment variables to the WASM module
kevinmingtarja Apr 29, 2025
90bf0fd
add changelog
kevinmingtarja Apr 29, 2025
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11 changes: 11 additions & 0 deletions runtime/wasmhost/wasmhost.go
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,8 @@ import (
"crypto/rand"
"fmt"
"io"
"os"
"strings"

"github.com/hypermodeinc/modus/runtime/functions"
"github.com/hypermodeinc/modus/runtime/logger"
Expand Down Expand Up @@ -135,6 +137,15 @@ func (host *wasmHost) GetModuleInstance(ctx context.Context, plugin *plugins.Plu
WithEnv("TZ", timeZone).
WithEnv("CLAIMS", jwtClaims)

for _, env := range os.Environ() {
split := strings.SplitN(env, "=", 2)
key, val := split[0], split[1]
if strings.HasPrefix(key, "MODUS_") {
// Remove the MODUS_ prefix
cfg = cfg.WithEnv(key[6:], val)
}
}

// Instantiate the plugin as a module.
// NOTE: This will also invoke the plugin's `_start` function,
// which will call any top-level code in the plugin.
Expand Down
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