only regenerate when neccesary

[trajan0x]

No description provided.

[greptile-apps]

To ensure the Swagger collection is only regenerated when necessary, modify /services/omnirpc/swagger/generator/main.go to include a condition that checks for changes before executing the generation logic. Here are the steps:

1. Compute the hash of the current collection.json file.
2. Generate the new collection and compute its hash.
3. Compare the hashes and only write to collection.json if they differ.

package main

import (
	"crypto/sha256"
	"github.com/synapsecns/sanguine/services/omnirpc/collection"
	"io/ioutil"
	"os"
)

func hashFile(filePath string) ([]byte, error) {
	file, err := os.Open(filePath)
	if err != nil {
		return nil, err
	}
	defer file.Close()

	hash := sha256.New()
	if _, err := io.Copy(hash, file); err != nil {
		return nil, err
	}

	return hash.Sum(nil), nil
}

func main() {
	oldHash, err := hashFile("collection.json")
	if err != nil && !os.IsNotExist(err) {
		panic(err)
	}

	res, err := collection.CreateCollection()
	if err != nil {
		panic(err)
	}

	newHash := sha256.Sum256(res)

	if bytes.Equal(oldHash, newHash[:]) {
		return // No changes, skip writing
	}

	file, err := os.Create("collection.json")
	if err != nil {
		panic(err)
	}

	_, err = file.Write(res)
	if err != nil {
		panic(err)
	}
}

References

/services/omnirpc/swagger/generator/main.go
/services/omnirpc/swagger

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