├── .gitignore
├── README.md
├── bin
    └── terraform-state-merge
└── package.json


/.gitignore:
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1 | npm-debug.log
2 | node_modules
3 | 


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/README.md:
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 1 | # terraform-state-merge
 2 | Merge any number of Terraform state files into one.
 3 | 
 4 | ## Installation
 5 | ```sh
 6 | npm -g install terraform-state-merge
 7 | ```
 8 | 
 9 | ## Usage
10 | ```
11 | terraform-state-merge <tfstate-file> <tfstate-file> [<tfstate-file> [...]]
12 | ```
13 | 
14 | `terraform-state-merge` always assumes the latest state has the most accurate
15 | information.
16 | 


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/bin/terraform-state-merge:
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 1 | #!/usr/bin/env node
 2 | 'use strict'
 3 | 
 4 | const fs = require('fs')
 5 | const deepDiff = require('deep-diff')
 6 | 
 7 | const files = process.argv.slice(2).map(f => fs.readFileSync(f))
 8 | // Sort them. We can assume that if Terraform changed some resources in between
 9 | // our serials, the latest serial is the most up to date one.
10 | const jsons = files.map(JSON.parse).sort((a, b) => a.serial - b.serial)
11 | const modules = jsons.map(j => j.modules)
12 | 
13 | var merged = {}
14 | 
15 | function stash(modules) {
16 |   modules.forEach((m) => {
17 |     const path = m.path.join('.')
18 |     merged[path] = m
19 |   })
20 | }
21 | 
22 | modules.forEach(stash)
23 | 
24 | merged = Object.keys(merged).map((k) => merged[k])
25 | console.log(JSON.stringify({
26 |   version: jsons[jsons.length - 1].version,
27 |   terraform_version: jsons[jsons.length - 1].terraform_version,
28 |   serial: jsons[jsons.length - 1].serial + 1,
29 |   modules: merged
30 | }, null, 4))
31 | 


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/package.json:
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 1 | {
 2 |   "name": "terraform-state-merge",
 3 |   "version": "0.1.1",
 4 |   "description": "Merge any number of Terraform state files into one",
 5 |   "main": "index.js",
 6 |   "scripts": {
 7 |     "test": "echo \"Error: no test specified\" && exit 1"
 8 |   },
 9 |   "author": "Maciej Małecki <me@mmalecki.com>",
10 |   "license": "ISC",
11 |   "bin": {
12 |     "terraform-state-merge": "./bin/terraform-state-merge"
13 |   },
14 |   "repository": {
15 |     "type": "git",
16 |     "url": "https://github.com/mmalecki/terraform-state-merge.git"
17 |   },
18 |   "dependencies": {
19 |     "deep-diff": "^0.3.4"
20 |   }
21 | }
22 | 


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