From d81bada2dafb4d3788ee478f84d73c956f101009 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 7 May 2026 11:50:30 +0200
Subject: [PATCH 01/37] feat: update code to be compatible with AWS Lambda

---
 01-ci-lab/app/calculator.py | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index 6c79abc..e4c9cca 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -5,6 +5,20 @@ def add(a, b):
 def divide(a, b):
     return a / b
 
+def lambda_handler(event, context):
+    a = event["a"]
+    b = event["b"]
 
-def divide2(a, b):
-    return a / b
+    operation = event["operation"]
+
+    if operation == "add":
+        result = add(a, b)
+    elif operation == "divide":
+        result = divide(a, b)
+    else:
+        return {"statusCode": 400, "body": "Unsupported operation"}
+
+    return {
+        "statusCode": 200,
+        "body": result
+    }

From 7693b8c12e8cf124a3883880b37ae3e4290e947c Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 14 May 2026 20:01:03 +0200
Subject: [PATCH 02/37] feat: login to AWS

---
 .github/workflows/ci.yaml | 45 ++++++++++++++++++++++++++++++++-------
 1 file changed, 37 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 1a6176c..641f8b7 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,12 +1,12 @@
 name: CI (test)
 
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
+on: [push]
+  # push:
+  #   branches:
+  #     - main
+  # pull_request:
+  #   branches:
+  #     - main
 
 jobs:
   test:
@@ -37,4 +37,33 @@ jobs:
         run: pytest 
 
       - name: Run linter
-        run: flake8 .    
\ No newline at end of file
+        run: flake8 .    
+  
+  deploy:
+    runs-on: ubuntu-latest
+
+    defaults:
+      run:
+        working-directory: 01-ci-lab
+
+    permissions:
+      id-token: write
+
+    needs: test
+
+    steps:
+
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v6
+        with:
+          role-to-assume: arn:aws:iam::350469506175:role/github-actions-lambda-deploy-role
+          aws-region: eu-central-1
+
+
+
+
+
+
+
+
+    
\ No newline at end of file

From 80dc7883fb1b3eaa48206ec7bed6e763887bf0a8 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 14 May 2026 20:02:27 +0200
Subject: [PATCH 03/37] chore: fix formatting

---
 01-ci-lab/app/calculator.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index e4c9cca..780215c 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -5,6 +5,7 @@ def add(a, b):
 def divide(a, b):
     return a / b
 
+
 def lambda_handler(event, context):
     a = event["a"]
     b = event["b"]

From 705cab14588c1a7af542f6ed1ef5e6b80d776dfa Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 21 May 2026 19:46:08 +0200
Subject: [PATCH 04/37] feat: add prepare lambda package step

---
 .github/workflows/ci.yaml | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 641f8b7..75e55b4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -58,12 +58,9 @@ jobs:
         with:
           role-to-assume: arn:aws:iam::350469506175:role/github-actions-lambda-deploy-role
           aws-region: eu-central-1
-
-
-
-
-
-
-
-
+          
+      - name: Prepare Lambda package
+        run: |
+          cp app/calculator.py lambda_function.py
+          zip function.zip lambda_function.py
     
\ No newline at end of file

From b629ca82e2a2f957b11b74b48baf40c821bfd14a Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 21 May 2026 19:51:00 +0200
Subject: [PATCH 05/37] chore: checkout the code

---
 .github/workflows/ci.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 75e55b4..840f779 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -53,6 +53,9 @@ jobs:
 
     steps:
 
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v6
         with:

From f11587a4f811a1d279a8bc29c962662a57ef1cfa Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 21 May 2026 19:59:49 +0200
Subject: [PATCH 06/37] feat: deploy Lambda

---
 .github/workflows/ci.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 840f779..b0f2c09 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -66,4 +66,13 @@ jobs:
         run: |
           cp app/calculator.py lambda_function.py
           zip function.zip lambda_function.py
+
+      - name: Deploy Lambda
+        run: |
+          aws lambda update-function-code \
+            --function-name calculator-app \
+            --zip-file fileb://function.zip
+
+
+
     
\ No newline at end of file

From d6700771cc827543bc7b555c7bfa55f6d0a7b221 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 21 May 2026 20:07:59 +0200
Subject: [PATCH 07/37] feat: add multiply

---
 01-ci-lab/app/calculator.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index 780215c..cd292bd 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -6,6 +6,10 @@ def divide(a, b):
     return a / b
 
 
+def multiply(a, b):
+    return a * b
+
+
 def lambda_handler(event, context):
     a = event["a"]
     b = event["b"]

From 9ec1505445e3a7dde54efca874a3c16a05311cf7 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <45850123+askorupka@users.noreply.github.com>
Date: Thu, 4 Jun 2026 14:40:52 +0200
Subject: [PATCH 08/37] fix: update lambda_handler to handle JSON input and
 outputfix

Refactor lambda_handler to parse JSON body and return results in JSON format.
---
 01-ci-lab/app/calculator.py | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index cd292bd..9ea1b07 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -1,3 +1,6 @@
+import json
+
+
 def add(a, b):
     return a + b
 
@@ -11,19 +14,23 @@ def multiply(a, b):
 
 
 def lambda_handler(event, context):
-    a = event["a"]
-    b = event["b"]
+    body = json.loads(event["body"])
 
-    operation = event["operation"]
+    a = body["a"]
+    b = body["b"]
+    operation = body["operation"]
 
     if operation == "add":
         result = add(a, b)
     elif operation == "divide":
         result = divide(a, b)
     else:
-        return {"statusCode": 400, "body": "Unsupported operation"}
+        return {
+            "statusCode": 400,
+            "body": json.dumps({"error": "Unsupported operation"})
+        }
 
     return {
         "statusCode": 200,
-        "body": result
+        "body": json.dumps({"result": result})
     }

From 2d3aef47a51f0b37d81564f8312c298754bffe70 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 4 Jun 2026 19:30:44 +0200
Subject: [PATCH 09/37] chore: upgrade checkout step version

---
 .github/workflows/ci.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index b0f2c09..edd2578 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -23,7 +23,7 @@ jobs:
     steps:
 
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
 
       - name: Setup python
         uses: actions/setup-python@v4
@@ -54,7 +54,7 @@ jobs:
     steps:
 
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
 
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v6

From 0823fc8da0926b6fd42e3b69134f5d4771b5eee7 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 4 Jun 2026 19:34:21 +0200
Subject: [PATCH 10/37] chore: upgrade setup-python

---
 .github/workflows/ci.yaml | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index edd2578..0ffe205 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -26,7 +26,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Setup python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -71,8 +71,4 @@ jobs:
         run: |
           aws lambda update-function-code \
             --function-name calculator-app \
-            --zip-file fileb://function.zip
-
-
-
-    
\ No newline at end of file
+            --zip-file fileb://function.zip
\ No newline at end of file

From 1a97d9138c6caf8600df0604576c6767f32c30a5 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 4 Jun 2026 19:46:46 +0200
Subject: [PATCH 11/37] fix: create lambda function

---
 .github/workflows/ci.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 0ffe205..457448f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -67,6 +67,14 @@ jobs:
           cp app/calculator.py lambda_function.py
           zip function.zip lambda_function.py
 
+      - name: Create Lambda
+        run: |
+          aws lambda create-function \
+            --function-name calculator-app \
+            --role arn:aws:iam::350469506175:role/service-role/calculator-app-role-cnpkrehb \
+            --runtime python3.13 \
+            --zip-file fileb://function.zip
+
       - name: Deploy Lambda
         run: |
           aws lambda update-function-code \

From 434c9d7930097cb309d8df9ab2acf2399f465965 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 4 Jun 2026 19:49:34 +0200
Subject: [PATCH 12/37] fix: add mandatory parameters

---
 .github/workflows/ci.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 457448f..df90c44 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -73,6 +73,7 @@ jobs:
             --function-name calculator-app \
             --role arn:aws:iam::350469506175:role/service-role/calculator-app-role-cnpkrehb \
             --runtime python3.13 \
+            --handler lambda_function.lambda_handler \
             --zip-file fileb://function.zip
 
       - name: Deploy Lambda

From eb3bcc11dfcbd189787ad0a4673950c24cd4c3a2 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 4 Jun 2026 19:51:49 +0200
Subject: [PATCH 13/37] feat: add multiply support

---
 01-ci-lab/app/calculator.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index 9ea1b07..149fd3d 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -24,6 +24,8 @@ def lambda_handler(event, context):
         result = add(a, b)
     elif operation == "divide":
         result = divide(a, b)
+    elif operation == "multiply":
+        result = multiply(a, b)
     else:
         return {
             "statusCode": 400,

From 124ac919285e66568b1c0c972c357863ad5556bd Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 4 Jun 2026 20:01:05 +0200
Subject: [PATCH 14/37] fix: create/update lambda function conditionally

---
 .github/workflows/ci.yaml | 34 +++++++++++++++++++++-------------
 1 file changed, 21 insertions(+), 13 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index df90c44..1493fff 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -67,17 +67,25 @@ jobs:
           cp app/calculator.py lambda_function.py
           zip function.zip lambda_function.py
 
-      - name: Create Lambda
+      - name: Create/update Lambda
         run: |
-          aws lambda create-function \
-            --function-name calculator-app \
-            --role arn:aws:iam::350469506175:role/service-role/calculator-app-role-cnpkrehb \
-            --runtime python3.13 \
-            --handler lambda_function.lambda_handler \
-            --zip-file fileb://function.zip
-
-      - name: Deploy Lambda
-        run: |
-          aws lambda update-function-code \
-            --function-name calculator-app \
-            --zip-file fileb://function.zip
\ No newline at end of file
+          if aws lambda get-function --function-name calculator-app >/dev/null 2>&1; then
+
+            echo "calculator-app lambda exists"
+
+            aws lambda update-function-code \
+              --function-name calculator-app \
+              --zip-file fileb://function.zip
+
+          else
+
+            echo "calculator-app lambda doesn't exist, creating"
+
+            aws lambda create-function \
+              --function-name calculator-app \
+              --role arn:aws:iam::350469506175:role/service-role/calculator-app-role-cnpkrehb \
+              --runtime python3.13 \
+              --handler lambda_function.lambda_handler \
+              --zip-file fileb://function.zip
+          
+          fi

From f8cd10c6b1984406b2d0db101de8e27da3c11b3d Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 14:42:30 +0200
Subject: [PATCH 15/37] fix: update function code to support both curl and AWS
 console test

---
 01-ci-lab/app/calculator.py | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index 149fd3d..7a2638f 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -14,10 +14,15 @@ def multiply(a, b):
 
 
 def lambda_handler(event, context):
-    body = json.loads(event["body"])
+    # Function URL / API Gateway
+    if "body" in event:
+        body = json.loads(event["body"]) if isinstance(event["body"], str) else event["body"]
+    # Test from AWS console
+    else:
+        body = event
 
-    a = body["a"]
-    b = body["b"]
+    a = float(body["a"])
+    b = float(body["b"])
     operation = body["operation"]
 
     if operation == "add":
@@ -35,4 +40,4 @@ def lambda_handler(event, context):
     return {
         "statusCode": 200,
         "body": json.dumps({"result": result})
-    }
+    }
\ No newline at end of file

From a1943afd49e456359036a2d3e257cc8e2b3a6fdc Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 14:43:26 +0200
Subject: [PATCH 16/37] chore: test Lambda URL creation

---
 .github/workflows/ci.yaml | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 1493fff..db87e69 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -89,3 +89,21 @@ jobs:
               --zip-file fileb://function.zip
           
           fi
+
+      - name: Create Lambda URL
+        run: |
+            if ! aws lambda get-function-url-config \
+                --function-name calculator-app >/dev/null 2>&1; then
+
+              aws lambda create-function-url-config \
+                --function-name calculator-app \
+                --auth-type NONE
+
+              aws lambda add-permission \
+                --function-name calculator-app \
+                --statement-id FunctionURLAllowPublicAccess \
+                --action lambda:InvokeFunctionUrl \
+                --principal "*" \
+                --function-url-auth-type NONE
+
+            fi
\ No newline at end of file

From e1511d34de008b59d93a1fded4c9918ba919803f Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 14:46:06 +0200
Subject: [PATCH 17/37] fix: update code

---
 01-ci-lab/app/calculator.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index 7a2638f..046c4a6 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -16,8 +16,11 @@ def multiply(a, b):
 def lambda_handler(event, context):
     # Function URL / API Gateway
     if "body" in event:
-        body = json.loads(event["body"]) if isinstance(event["body"], str) else event["body"]
-    # Test from AWS console
+        if isinstance(event["body"], str):
+            body = json.loads(event["body"])
+        else:
+            body = event["body"]
+    # Test from AWS Console
     else:
         body = event
 
@@ -40,4 +43,4 @@ def lambda_handler(event, context):
     return {
         "statusCode": 200,
         "body": json.dumps({"result": result})
-    }
\ No newline at end of file
+    }

From a5b262790b268657b4086842a622f5be8a90aeb0 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 14:56:12 +0200
Subject: [PATCH 18/37] fix: add more permissions to lambda function

---
 .github/workflows/ci.yaml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index db87e69..19085ae 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -106,4 +106,18 @@ jobs:
                 --principal "*" \
                 --function-url-auth-type NONE
 
+              aws lambda add-permission \
+                --function-name calculator-app \
+                --statement-id FunctionURLAllowPublicAccess \
+                --action lambda:InvokeFunctionUrl \
+                --principal "*" \
+                --function-url-auth-type NONE || true
+
+              aws lambda add-permission \
+                --function-name calculator-app \
+                --statement-id FunctionURLAllowInvokeAction \
+                --action lambda:InvokeFunction \
+                --principal "*" \
+                --invoked-via-function-url true || true
+
             fi
\ No newline at end of file

From 498803b8cff2ff796bcb920f92660412cc32f9f8 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 14:58:58 +0200
Subject: [PATCH 19/37] fix: add more permissions to lambda function

---
 .github/workflows/ci.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 19085ae..fb208f6 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -108,14 +108,14 @@ jobs:
 
               aws lambda add-permission \
                 --function-name calculator-app \
-                --statement-id FunctionURLAllowPublicAccess \
+                --statement-id FunctionAllowPublicAccess \
                 --action lambda:InvokeFunctionUrl \
                 --principal "*" \
                 --function-url-auth-type NONE || true
 
               aws lambda add-permission \
                 --function-name calculator-app \
-                --statement-id FunctionURLAllowInvokeAction \
+                --statement-id FunctionAllowInvokeAction \
                 --action lambda:InvokeFunction \
                 --principal "*" \
                 --invoked-via-function-url true || true

From c4a39ec28405549245da70bf76245a0712ecef28 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 15:00:28 +0200
Subject: [PATCH 20/37] fix: add more permissions to lambda function

---
 .github/workflows/ci.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index fb208f6..0679676 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -101,7 +101,7 @@ jobs:
 
               aws lambda add-permission \
                 --function-name calculator-app \
-                --statement-id FunctionURLAllowPublicAccess \
+                --statement-id FunctionAllowPublicAccess \
                 --action lambda:InvokeFunctionUrl \
                 --principal "*" \
                 --function-url-auth-type NONE

From dd0660cbcaff0648030f29d5a35ca907b5e392e8 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 15:09:06 +0200
Subject: [PATCH 21/37] fix: add more permissions to lambda function

---
 .github/workflows/ci.yaml | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 0679676..a0a173a 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -106,13 +106,6 @@ jobs:
                 --principal "*" \
                 --function-url-auth-type NONE
 
-              aws lambda add-permission \
-                --function-name calculator-app \
-                --statement-id FunctionAllowPublicAccess \
-                --action lambda:InvokeFunctionUrl \
-                --principal "*" \
-                --function-url-auth-type NONE || true
-
               aws lambda add-permission \
                 --function-name calculator-app \
                 --statement-id FunctionAllowInvokeAction \

From aaed6784b0a85bdbe421f05dcf58d902d8eccfc5 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 15:13:19 +0200
Subject: [PATCH 22/37] fix: add more permissions to lambda function

---
 .github/workflows/ci.yaml | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index a0a173a..aa6f58c 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -99,13 +99,6 @@ jobs:
                 --function-name calculator-app \
                 --auth-type NONE
 
-              aws lambda add-permission \
-                --function-name calculator-app \
-                --statement-id FunctionAllowPublicAccess \
-                --action lambda:InvokeFunctionUrl \
-                --principal "*" \
-                --function-url-auth-type NONE
-
               aws lambda add-permission \
                 --function-name calculator-app \
                 --statement-id FunctionAllowInvokeAction \

From 53295c2a2a718c20da1c058b9c14d54ea45e6c75 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 15:14:23 +0200
Subject: [PATCH 23/37] fix: add more permissions to lambda function

---
 .github/workflows/ci.yaml | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index aa6f58c..a78f9b3 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -99,11 +99,18 @@ jobs:
                 --function-name calculator-app \
                 --auth-type NONE
 
+              aws lambda add-permission \
+                --function-name calculator-app \
+                --statement-id FunctionAllowPublicAccess \
+                --action lambda:InvokeFunctionUrl \
+                --principal "*" \
+                --function-url-auth-type NONE
+
               aws lambda add-permission \
                 --function-name calculator-app \
                 --statement-id FunctionAllowInvokeAction \
                 --action lambda:InvokeFunction \
                 --principal "*" \
-                --invoked-via-function-url true || true
+                --invoked-via-function-url true
 
             fi
\ No newline at end of file

From 1afc26ccb8cf3ff5b4370556362a20a4e9c6b702 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 15:21:30 +0200
Subject: [PATCH 24/37] fix: add more permissions to lambda function

---
 .github/workflows/ci.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index a78f9b3..bf5f39b 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -111,6 +111,6 @@ jobs:
                 --statement-id FunctionAllowInvokeAction \
                 --action lambda:InvokeFunction \
                 --principal "*" \
-                --invoked-via-function-url true
+                --invoked-via-function-url
 
             fi
\ No newline at end of file

From 97c953e15a36f0e60d0132379096cda6566f16cd Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 15:27:10 +0200
Subject: [PATCH 25/37] chore: cleanup code

---
 .github/workflows/ci.yaml   | 25 -------------------------
 01-ci-lab/app/calculator.py |  4 ++--
 2 files changed, 2 insertions(+), 27 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index bf5f39b..1493fff 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -89,28 +89,3 @@ jobs:
               --zip-file fileb://function.zip
           
           fi
-
-      - name: Create Lambda URL
-        run: |
-            if ! aws lambda get-function-url-config \
-                --function-name calculator-app >/dev/null 2>&1; then
-
-              aws lambda create-function-url-config \
-                --function-name calculator-app \
-                --auth-type NONE
-
-              aws lambda add-permission \
-                --function-name calculator-app \
-                --statement-id FunctionAllowPublicAccess \
-                --action lambda:InvokeFunctionUrl \
-                --principal "*" \
-                --function-url-auth-type NONE
-
-              aws lambda add-permission \
-                --function-name calculator-app \
-                --statement-id FunctionAllowInvokeAction \
-                --action lambda:InvokeFunction \
-                --principal "*" \
-                --invoked-via-function-url
-
-            fi
\ No newline at end of file
diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index 046c4a6..397806e 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -24,8 +24,8 @@ def lambda_handler(event, context):
     else:
         body = event
 
-    a = float(body["a"])
-    b = float(body["b"])
+    a = body["a"]
+    b = body["b"]
     operation = body["operation"]
 
     if operation == "add":

From 4e5cef2e15e29093be994299dd8fd45842811856 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 18:43:35 +0200
Subject: [PATCH 26/37] chore: prepare code for the class

---
 01-ci-lab/app/calculator.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index 397806e..766214b 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -32,8 +32,6 @@ def lambda_handler(event, context):
         result = add(a, b)
     elif operation == "divide":
         result = divide(a, b)
-    elif operation == "multiply":
-        result = multiply(a, b)
     else:
         return {
             "statusCode": 400,

From 7336b7cd928722b88ad5fbb96e9d1e166ab33bc2 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 11 Jun 2026 19:43:47 +0200
Subject: [PATCH 27/37] fix: fix types of a and b

---
 01-ci-lab/app/calculator.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index 766214b..eabb3d5 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -24,8 +24,8 @@ def lambda_handler(event, context):
     else:
         body = event
 
-    a = body["a"]
-    b = body["b"]
+    a = float(body["a"])
+    b = float(body["b"])
     operation = body["operation"]
 
     if operation == "add":

From 43f5cc9982afe04c3a09ea47dd9e8a2c434fcd75 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 18 Jun 2026 19:39:37 +0200
Subject: [PATCH 28/37] feat: add new operations

---
 01-ci-lab/app/calculator.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index eabb3d5..9b1e084 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -13,6 +13,10 @@ def multiply(a, b):
     return a * b
 
 
+def substract(a, b):
+    return a - b
+
+
 def lambda_handler(event, context):
     # Function URL / API Gateway
     if "body" in event:
@@ -32,6 +36,10 @@ def lambda_handler(event, context):
         result = add(a, b)
     elif operation == "divide":
         result = divide(a, b)
+    elif operation == "multiply":
+        result = multiply(a, b)
+    elif operation == "substract":
+        result = substract(a, b)
     else:
         return {
             "statusCode": 400,

From aaaf7198860655d425ed8cbd409669f02f93eda7 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Wed, 24 Jun 2026 19:36:27 +0200
Subject: [PATCH 29/37] feat: add function URL

---
 .github/workflows/ci.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 1493fff..63ff831 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -89,3 +89,10 @@ jobs:
               --zip-file fileb://function.zip
           
           fi
+
+      - name: Create function URL
+        run: |
+
+          aws lambda create-function-url-config \
+            --function-name calculator-app \
+            --auth-type NONE
\ No newline at end of file

From 331077623cf4e4bd7904c1637d0c1bd9430b80f3 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Wed, 24 Jun 2026 19:48:11 +0200
Subject: [PATCH 30/37] fix: create URL only when it doesn't exist

---
 .github/workflows/ci.yaml | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 63ff831..73fecc9 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -92,7 +92,11 @@ jobs:
 
       - name: Create function URL
         run: |
+          if ! aws lambda get-function-url-config \
+            --function-name calculator-app >/dev/null 2>&1; then
 
-          aws lambda create-function-url-config \
-            --function-name calculator-app \
-            --auth-type NONE
\ No newline at end of file
+            aws lambda create-function-url-config \
+              --function-name calculator-app \
+              --auth-type NONE
+
+          fi
\ No newline at end of file

From b15a02ff5e5a789791a466ab153dc8d10076762f Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Wed, 24 Jun 2026 19:57:07 +0200
Subject: [PATCH 31/37] chore: parametrize LAMBDA_NAME

---
 .github/workflows/ci.yaml | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 73fecc9..17b92c1 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -51,6 +51,9 @@ jobs:
 
     needs: test
 
+    env:
+      LAMBDA_NAME: calculator-app
+
     steps:
 
       - name: Checkout repository
@@ -69,20 +72,20 @@ jobs:
 
       - name: Create/update Lambda
         run: |
-          if aws lambda get-function --function-name calculator-app >/dev/null 2>&1; then
+          if aws lambda get-function --function-name ${{ env.LAMBDA_NAME }} >/dev/null 2>&1; then
 
-            echo "calculator-app lambda exists"
+            echo "${{ env.LAMBDA_NAME }} lambda exists"
 
             aws lambda update-function-code \
-              --function-name calculator-app \
+              --function-name ${{ env.LAMBDA_NAME }} \
               --zip-file fileb://function.zip
 
           else
 
-            echo "calculator-app lambda doesn't exist, creating"
+            echo "${{ env.LAMBDA_NAME }} lambda doesn't exist, creating"
 
             aws lambda create-function \
-              --function-name calculator-app \
+              --function-name ${{ env.LAMBDA_NAME }} \
               --role arn:aws:iam::350469506175:role/service-role/calculator-app-role-cnpkrehb \
               --runtime python3.13 \
               --handler lambda_function.lambda_handler \
@@ -93,10 +96,19 @@ jobs:
       - name: Create function URL
         run: |
           if ! aws lambda get-function-url-config \
-            --function-name calculator-app >/dev/null 2>&1; then
+            --function-name ${{ env.LAMBDA_NAME }} >/dev/null 2>&1; then
+
+            echo "URL doesn't exist, creating"
 
             aws lambda create-function-url-config \
-              --function-name calculator-app \
+              --function-name ${{ env.LAMBDA_NAME }} \
               --auth-type NONE
 
+          else
+
+            echo "URL exists"
+
+            aws lambda get-function-url-config \
+              --function-name ${{ env.LAMBDA_NAME }}
+
           fi
\ No newline at end of file

From 753afc4623b77b880d330aafec441d83baf9b74e Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 2 Jul 2026 20:03:34 +0200
Subject: [PATCH 32/37] fix: add resource-based policy

---
 .github/workflows/ci.yaml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 17b92c1..9d73dc3 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -104,6 +104,20 @@ jobs:
               --function-name ${{ env.LAMBDA_NAME }} \
               --auth-type NONE
 
+            aws lambda add-permission \ lambda:InvokeFunction
+              --function-name ${{ env.LAMBDA_NAME }} \
+              --statement-id FunctionAllowPublicAccessUrl \
+              --action lambda:InvokeFunctionUrl \
+              --principal "*" \
+              --function-url-auth-type NONE
+
+            aws lambda add-permission \ 
+              --function-name ${{ env.LAMBDA_NAME }} \
+              --statement-id FunctionAllowPublicAccess \
+              --action lambda:InvokeFunction \
+              --principal "*" \
+              --invoked-via-function-url
+
           else
 
             echo "URL exists"

From 2305cfc9f54f4743fae17eb77f78bf89bf9765cb Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 2 Jul 2026 20:05:08 +0200
Subject: [PATCH 33/37] fix: add resource-based policy

---
 .github/workflows/ci.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 9d73dc3..782abe2 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -104,7 +104,7 @@ jobs:
               --function-name ${{ env.LAMBDA_NAME }} \
               --auth-type NONE
 
-            aws lambda add-permission \ lambda:InvokeFunction
+            aws lambda add-permission \ 
               --function-name ${{ env.LAMBDA_NAME }} \
               --statement-id FunctionAllowPublicAccessUrl \
               --action lambda:InvokeFunctionUrl \

From 16d24446d3d991839e167dca45869e375bab2e43 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 9 Jul 2026 19:10:46 +0200
Subject: [PATCH 34/37] fix: clean up space at the end of the line

---
 .github/workflows/ci.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 782abe2..5ffd0fb 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -104,14 +104,14 @@ jobs:
               --function-name ${{ env.LAMBDA_NAME }} \
               --auth-type NONE
 
-            aws lambda add-permission \ 
+            aws lambda add-permission \
               --function-name ${{ env.LAMBDA_NAME }} \
               --statement-id FunctionAllowPublicAccessUrl \
               --action lambda:InvokeFunctionUrl \
               --principal "*" \
               --function-url-auth-type NONE
 
-            aws lambda add-permission \ 
+            aws lambda add-permission \
               --function-name ${{ env.LAMBDA_NAME }} \
               --statement-id FunctionAllowPublicAccess \
               --action lambda:InvokeFunction \

From f3e3da88f18980900c831ccfba0174243b5f7faa Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 9 Jul 2026 19:19:27 +0200
Subject: [PATCH 35/37] feat: add power operation

---
 01-ci-lab/app/calculator.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index 9b1e084..092f1e6 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -17,6 +17,10 @@ def substract(a, b):
     return a - b
 
 
+def power(a, b):
+    return a**b
+
+
 def lambda_handler(event, context):
     # Function URL / API Gateway
     if "body" in event:
@@ -40,6 +44,8 @@ def lambda_handler(event, context):
         result = multiply(a, b)
     elif operation == "substract":
         result = substract(a, b)
+    elif operation == "power":
+        result = power(a, b)
     else:
         return {
             "statusCode": 400,

From 80d06b8e5646cd8b806f83c55baf4e3313ded534 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 9 Jul 2026 19:25:24 +0200
Subject: [PATCH 36/37] chore: change trigger for GHA

---
 .github/workflows/ci.yaml | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 5ffd0fb..c9a4d28 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,12 +1,12 @@
 name: CI (test)
 
-on: [push]
-  # push:
-  #   branches:
-  #     - main
-  # pull_request:
-  #   branches:
-  #     - main
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
   test:

From 4e62931625ce4270fe37834d489912511bab25f8 Mon Sep 17 00:00:00 2001
From: Agata Skorupka <agata.skorupka@gmail.com>
Date: Thu, 9 Jul 2026 19:37:26 +0200
Subject: [PATCH 37/37] fix: newline at the end of the file

---
 01-ci-lab/app/calculator.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index a2ecc6c..092f1e6 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -55,4 +55,4 @@ def lambda_handler(event, context):
     return {
         "statusCode": 200,
         "body": json.dumps({"result": result})
-    }
\ No newline at end of file
+    }