Subscribe filter for querying by ID
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Philipp Heckel
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@ -26,6 +26,7 @@ and the [ntfy Android app](https://github.com/binwiederhier/ntfy-android/release
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**Features:**
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* Regularly send Firebase keepalive messages to ~poll topic to support self-hosted servers (no ticket)
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* Add subscribe filter to query exact messages by ID (no ticket)
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**Bugs:**
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@ -267,7 +267,7 @@ curl -s "ntfy.sh/mytopic/json?poll=1&sched=1"
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```
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### Filter messages
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You can filter which messages are returned based on the well-known message fields `message`, `title`, `priority` and
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You can filter which messages are returned based on the well-known message fields `id`, `message`, `title`, `priority` and
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`tags`. Here's an example that only returns messages of high or urgent priority that contains the both tags
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"zfs-error" and "error". Note that the `priority` filter is a logical OR and the `tags` filter is a logical AND.
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@ -280,12 +280,13 @@ $ curl "ntfy.sh/alerts/json?priority=high&tags=zfs-error"
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Available filters (all case-insensitive):
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| Filter variable | Alias | Example | Description |
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|-----------------|---------------------------|------------------------------------|-------------------------------------------------------------------------|
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| `message` | `X-Message`, `m` | `ntfy.sh/mytopic?message=lalala` | Only return messages that match this exact message string |
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| `title` | `X-Title`, `t` | `ntfy.sh/mytopic?title=some+title` | Only return messages that match this exact title string |
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| `priority` | `X-Priority`, `prio`, `p` | `ntfy.sh/mytopic?p=high,urgent` | Only return messages that match *any priority listed* (comma-separated) |
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| `tags` | `X-Tags`, `tag`, `ta` | `ntfy.sh/mytopic?tags=error,alert` | Only return messages that match *all listed tags* (comma-separated) |
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| Filter variable | Alias | Example | Description |
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|-----------------|---------------------------|-----------------------------------------------|-------------------------------------------------------------------------|
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| `id` | `X-ID` | `ntfy.sh/mytopic/json?poll=1&id=pbkiz8SD7ZxG` | Only return messages that match this exact message ID |
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| `message` | `X-Message`, `m` | `ntfy.sh/mytopic/json?message=lalala` | Only return messages that match this exact message string |
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| `title` | `X-Title`, `t` | `ntfy.sh/mytopic/json?title=some+title` | Only return messages that match this exact title string |
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| `priority` | `X-Priority`, `prio`, `p` | `ntfy.sh/mytopic/json?p=high,urgent` | Only return messages that match *any priority listed* (comma-separated) |
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| `tags` | `X-Tags`, `tag`, `ta` | `ntfy.sh/mytopic?/jsontags=error,alert` | Only return messages that match *all listed tags* (comma-separated) |
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### Subscribe to multiple topics
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It's possible to subscribe to multiple topics in one HTTP call by providing a comma-separated list of topics
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@ -315,18 +316,19 @@ format of the message. It's very straight forward:
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**Message**:
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| Field | Required | Type | Example | Description |
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|--------------|----------|---------------------------------------------------|-----------------------|--------------------------------------------------------------------------------------------------------------------------------------|
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| `id` | ✔️ | *string* | `hwQ2YpKdmg` | Randomly chosen message identifier |
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| `time` | ✔️ | *number* | `1635528741` | Message date time, as Unix time stamp |
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| `event` | ✔️ | `open`, `keepalive`, `message`, or `poll_request` | `message` | Message type, typically you'd be only interested in `message` |
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| `topic` | ✔️ | *string* | `topic1,topic2` | Comma-separated list of topics the message is associated with; only one for all `message` events, but may be a list in `open` events |
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| `message` | - | *string* | `Some message` | Message body; always present in `message` events |
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| `title` | - | *string* | `Some title` | Message [title](../publish.md#message-title); if not set defaults to `ntfy.sh/<topic>` |
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| `tags` | - | *string array* | `["tag1","tag2"]` | List of [tags](../publish.md#tags-emojis) that may or not map to emojis |
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| `priority` | - | *1, 2, 3, 4, or 5* | `4` | Message [priority](../publish.md#message-priority) with 1=min, 3=default and 5=max |
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| `click` | - | *URL* | `https://example.com` | Website opened when notification is [clicked](../publish.md#click-action) |
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| `attachment` | - | *JSON object* | *see below* | Details about an attachment (name, URL, size, ...) |
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| Field | Required | Type | Example | Description |
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|--------------|----------|---------------------------------------------------|-------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------|
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| `id` | ✔️ | *string* | `hwQ2YpKdmg` | Randomly chosen message identifier |
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| `time` | ✔️ | *number* | `1635528741` | Message date time, as Unix time stamp |
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| `event` | ✔️ | `open`, `keepalive`, `message`, or `poll_request` | `message` | Message type, typically you'd be only interested in `message` |
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| `topic` | ✔️ | *string* | `topic1,topic2` | Comma-separated list of topics the message is associated with; only one for all `message` events, but may be a list in `open` events |
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| `message` | - | *string* | `Some message` | Message body; always present in `message` events |
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| `title` | - | *string* | `Some title` | Message [title](../publish.md#message-title); if not set defaults to `ntfy.sh/<topic>` |
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| `tags` | - | *string array* | `["tag1","tag2"]` | List of [tags](../publish.md#tags-emojis) that may or not map to emojis |
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| `priority` | - | *1, 2, 3, 4, or 5* | `4` | Message [priority](../publish.md#message-priority) with 1=min, 3=default and 5=max |
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| `click` | - | *URL* | `https://example.com` | Website opened when notification is [clicked](../publish.md#click-action) |
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| `actions` | - | *JSON array* | *see [actions buttons](../publish.md#action-buttons)* | [Action buttons](../publish.md#action-buttons) that can be displayed in the notification |
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| `attachment` | - | *JSON object* | *see below* | Details about an attachment (name, URL, size, ...) |
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**Attachment** (part of the message, see [attachments](../publish.md#attachments) for details):
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@ -416,6 +418,7 @@ and can be passed as **HTTP headers** or **query parameters in the URL**. They a
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| `poll` | `X-Poll`, `po` | Return cached messages and close connection |
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| `since` | `X-Since`, `si` | Return cached messages since timestamp, duration or message ID |
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| `scheduled` | `X-Scheduled`, `sched` | Include scheduled/delayed messages in message list |
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| `id` | `X-ID` | Filter: Only return messages that match this exact message ID |
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| `message` | `X-Message`, `m` | Filter: Only return messages that match this exact message string |
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| `title` | `X-Title`, `t` | Filter: Only return messages that match this exact title string |
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| `priority` | `X-Priority`, `prio`, `p` | Filter: Only return messages that match *any priority listed* (comma-separated) |
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@ -153,6 +153,7 @@ var (
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)
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type queryFilter struct {
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ID string
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Message string
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Title string
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Tags []string
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@ -160,6 +161,7 @@ type queryFilter struct {
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}
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func parseQueryFilters(r *http.Request) (*queryFilter, error) {
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idFilter := readParam(r, "x-id", "id")
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messageFilter := readParam(r, "x-message", "message", "m")
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titleFilter := readParam(r, "x-title", "title", "t")
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tagsFilter := util.SplitNoEmpty(readParam(r, "x-tags", "tags", "tag", "ta"), ",")
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@ -172,6 +174,7 @@ func parseQueryFilters(r *http.Request) (*queryFilter, error) {
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priorityFilter = append(priorityFilter, priority)
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}
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return &queryFilter{
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ID: idFilter,
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Message: messageFilter,
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Title: titleFilter,
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Tags: tagsFilter,
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@ -182,11 +185,11 @@ func parseQueryFilters(r *http.Request) (*queryFilter, error) {
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func (q *queryFilter) Pass(msg *message) bool {
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if msg.Event != messageEvent {
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return true // filters only apply to messages
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}
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if q.Message != "" && msg.Message != q.Message {
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} else if q.ID != "" && msg.ID != q.ID {
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return false
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}
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if q.Title != "" && msg.Title != q.Title {
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} else if q.Message != "" && msg.Message != q.Message {
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return false
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} else if q.Title != "" && msg.Title != q.Title {
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return false
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}
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messagePriority := msg.Priority
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